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1,000
cggh/scikit-allel
allel/chunked/core.py
store
def store(data, arr, start=0, stop=None, offset=0, blen=None): """Copy `data` block-wise into `arr`.""" # setup blen = _util.get_blen_array(data, blen) if stop is None: stop = len(data) else: stop = min(stop, len(data)) length = stop - start if length < 0: raise Valu...
python
def store(data, arr, start=0, stop=None, offset=0, blen=None): # setup blen = _util.get_blen_array(data, blen) if stop is None: stop = len(data) else: stop = min(stop, len(data)) length = stop - start if length < 0: raise ValueError('invalid stop/start') # copy block...
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Copy `data` block-wise into `arr`.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L16-L34
1,001
cggh/scikit-allel
allel/chunked/core.py
copy
def copy(data, start=0, stop=None, blen=None, storage=None, create='array', **kwargs): """Copy `data` block-wise into a new array.""" # setup storage = _util.get_storage(storage) blen = _util.get_blen_array(data, blen) if stop is None: stop = len(data) else: stop = min(...
python
def copy(data, start=0, stop=None, blen=None, storage=None, create='array', **kwargs): # setup storage = _util.get_storage(storage) blen = _util.get_blen_array(data, blen) if stop is None: stop = len(data) else: stop = min(stop, len(data)) length = stop - start if le...
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Copy `data` block-wise into a new array.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L37-L62
1,002
cggh/scikit-allel
allel/chunked/core.py
copy_table
def copy_table(tbl, start=0, stop=None, blen=None, storage=None, create='table', **kwargs): """Copy `tbl` block-wise into a new table.""" # setup names, columns = _util.check_table_like(tbl) storage = _util.get_storage(storage) blen = _util.get_blen_table(tbl, blen) if stop is No...
python
def copy_table(tbl, start=0, stop=None, blen=None, storage=None, create='table', **kwargs): # setup names, columns = _util.check_table_like(tbl) storage = _util.get_storage(storage) blen = _util.get_blen_table(tbl, blen) if stop is None: stop = len(columns[0]) else: ...
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Copy `tbl` block-wise into a new table.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L65-L92
1,003
cggh/scikit-allel
allel/chunked/core.py
map_blocks
def map_blocks(data, f, blen=None, storage=None, create='array', **kwargs): """Apply function `f` block-wise over `data`.""" # setup storage = _util.get_storage(storage) if isinstance(data, tuple): blen = max(_util.get_blen_array(d, blen) for d in data) else: blen = _util.get_blen_a...
python
def map_blocks(data, f, blen=None, storage=None, create='array', **kwargs): # setup storage = _util.get_storage(storage) if isinstance(data, tuple): blen = max(_util.get_blen_array(d, blen) for d in data) else: blen = _util.get_blen_array(data, blen) if isinstance(data, tuple): ...
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Apply function `f` block-wise over `data`.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L95-L130
1,004
cggh/scikit-allel
allel/chunked/core.py
reduce_axis
def reduce_axis(data, reducer, block_reducer, mapper=None, axis=None, blen=None, storage=None, create='array', **kwargs): """Apply an operation to `data` that reduces over one or more axes.""" # setup storage = _util.get_storage(storage) blen = _util.get_blen_array(data, blen) lengt...
python
def reduce_axis(data, reducer, block_reducer, mapper=None, axis=None, blen=None, storage=None, create='array', **kwargs): # setup storage = _util.get_storage(storage) blen = _util.get_blen_array(data, blen) length = len(data) # normalise axis arg if isinstance(axis, int): ...
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Apply an operation to `data` that reduces over one or more axes.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L133-L185
1,005
cggh/scikit-allel
allel/chunked/core.py
amax
def amax(data, axis=None, mapper=None, blen=None, storage=None, create='array', **kwargs): """Compute the maximum value.""" return reduce_axis(data, axis=axis, reducer=np.amax, block_reducer=np.maximum, mapper=mapper, blen=blen, storage=storage, create=crea...
python
def amax(data, axis=None, mapper=None, blen=None, storage=None, create='array', **kwargs): return reduce_axis(data, axis=axis, reducer=np.amax, block_reducer=np.maximum, mapper=mapper, blen=blen, storage=storage, create=create, **kwargs)
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Compute the maximum value.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L188-L193
1,006
cggh/scikit-allel
allel/chunked/core.py
amin
def amin(data, axis=None, mapper=None, blen=None, storage=None, create='array', **kwargs): """Compute the minimum value.""" return reduce_axis(data, axis=axis, reducer=np.amin, block_reducer=np.minimum, mapper=mapper, blen=blen, storage=storage, create=crea...
python
def amin(data, axis=None, mapper=None, blen=None, storage=None, create='array', **kwargs): return reduce_axis(data, axis=axis, reducer=np.amin, block_reducer=np.minimum, mapper=mapper, blen=blen, storage=storage, create=create, **kwargs)
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Compute the minimum value.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L196-L201
1,007
cggh/scikit-allel
allel/chunked/core.py
asum
def asum(data, axis=None, mapper=None, blen=None, storage=None, create='array', **kwargs): """Compute the sum.""" return reduce_axis(data, axis=axis, reducer=np.sum, block_reducer=np.add, mapper=mapper, blen=blen, storage=storage, create=create, **kwargs)
python
def asum(data, axis=None, mapper=None, blen=None, storage=None, create='array', **kwargs): return reduce_axis(data, axis=axis, reducer=np.sum, block_reducer=np.add, mapper=mapper, blen=blen, storage=storage, create=create, **kwargs)
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Compute the sum.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L205-L210
1,008
cggh/scikit-allel
allel/chunked/core.py
count_nonzero
def count_nonzero(data, mapper=None, blen=None, storage=None, create='array', **kwargs): """Count the number of non-zero elements.""" return reduce_axis(data, reducer=np.count_nonzero, block_reducer=np.add, mapper=mapper, blen=blen, storage=storage...
python
def count_nonzero(data, mapper=None, blen=None, storage=None, create='array', **kwargs): return reduce_axis(data, reducer=np.count_nonzero, block_reducer=np.add, mapper=mapper, blen=blen, storage=storage, create=create, **kwargs)
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Count the number of non-zero elements.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L213-L218
1,009
cggh/scikit-allel
allel/chunked/core.py
subset
def subset(data, sel0=None, sel1=None, blen=None, storage=None, create='array', **kwargs): """Return selected rows and columns of an array.""" # TODO refactor sel0 and sel1 normalization with ndarray.subset # setup storage = _util.get_storage(storage) blen = _util.get_blen_array(data, b...
python
def subset(data, sel0=None, sel1=None, blen=None, storage=None, create='array', **kwargs): # TODO refactor sel0 and sel1 normalization with ndarray.subset # setup storage = _util.get_storage(storage) blen = _util.get_blen_array(data, blen) length = len(data) if sel0 is not None: ...
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Return selected rows and columns of an array.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L384-L437
1,010
cggh/scikit-allel
allel/chunked/core.py
binary_op
def binary_op(data, op, other, blen=None, storage=None, create='array', **kwargs): """Compute a binary operation block-wise over `data`.""" # normalise scalars if hasattr(other, 'shape') and len(other.shape) == 0: other = other[()] if np.isscalar(other): def f(block): ...
python
def binary_op(data, op, other, blen=None, storage=None, create='array', **kwargs): # normalise scalars if hasattr(other, 'shape') and len(other.shape) == 0: other = other[()] if np.isscalar(other): def f(block): return op(block, other) return map_blocks(dat...
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Compute a binary operation block-wise over `data`.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L505-L525
1,011
cggh/scikit-allel
allel/chunked/core.py
eval_table
def eval_table(tbl, expression, vm='python', blen=None, storage=None, create='array', vm_kwargs=None, **kwargs): """Evaluate `expression` against columns of a table.""" # setup storage = _util.get_storage(storage) names, columns = _util.check_table_like(tbl) length = len(columns[0]) ...
python
def eval_table(tbl, expression, vm='python', blen=None, storage=None, create='array', vm_kwargs=None, **kwargs): # setup storage = _util.get_storage(storage) names, columns = _util.check_table_like(tbl) length = len(columns[0]) if vm_kwargs is None: vm_kwargs = dict() # s...
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Evaluate `expression` against columns of a table.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/chunked/core.py#L545-L586
1,012
cggh/scikit-allel
allel/model/util.py
create_allele_mapping
def create_allele_mapping(ref, alt, alleles, dtype='i1'): """Create an array mapping variant alleles into a different allele index system. Parameters ---------- ref : array_like, S1, shape (n_variants,) Reference alleles. alt : array_like, S1, shape (n_variants, n_alt_alleles) A...
python
def create_allele_mapping(ref, alt, alleles, dtype='i1'): ref = asarray_ndim(ref, 1) alt = asarray_ndim(alt, 1, 2) alleles = asarray_ndim(alleles, 1, 2) check_dim0_aligned(ref, alt, alleles) # reshape for convenience ref = ref[:, None] if alt.ndim == 1: alt = alt[:, None] if all...
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Create an array mapping variant alleles into a different allele index system. Parameters ---------- ref : array_like, S1, shape (n_variants,) Reference alleles. alt : array_like, S1, shape (n_variants, n_alt_alleles) Alternate alleles. alleles : array_like, S1, shape (n_variants...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/util.py#L17-L98
1,013
cggh/scikit-allel
allel/model/util.py
locate_fixed_differences
def locate_fixed_differences(ac1, ac2): """Locate variants with no shared alleles between two populations. Parameters ---------- ac1 : array_like, int, shape (n_variants, n_alleles) Allele counts array from the first population. ac2 : array_like, int, shape (n_variants, n_alleles) A...
python
def locate_fixed_differences(ac1, ac2): # check inputs ac1 = asarray_ndim(ac1, 2) ac2 = asarray_ndim(ac2, 2) check_dim0_aligned(ac1, ac2) ac1, ac2 = ensure_dim1_aligned(ac1, ac2) # stack allele counts for convenience pac = np.dstack([ac1, ac2]) # count numbers of alleles called in each...
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Locate variants with no shared alleles between two populations. Parameters ---------- ac1 : array_like, int, shape (n_variants, n_alleles) Allele counts array from the first population. ac2 : array_like, int, shape (n_variants, n_alleles) Allele counts array from the second population. ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/util.py#L101-L157
1,014
cggh/scikit-allel
allel/model/util.py
locate_private_alleles
def locate_private_alleles(*acs): """Locate alleles that are found only in a single population. Parameters ---------- *acs : array_like, int, shape (n_variants, n_alleles) Allele counts arrays from each population. Returns ------- loc : ndarray, bool, shape (n_variants, n_alleles) ...
python
def locate_private_alleles(*acs): # check inputs acs = [asarray_ndim(ac, 2) for ac in acs] check_dim0_aligned(*acs) acs = ensure_dim1_aligned(*acs) # stack allele counts for convenience pac = np.dstack(acs) # count the numbers of populations with each allele npa = np.sum(pac > 0, axis=...
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Locate alleles that are found only in a single population. Parameters ---------- *acs : array_like, int, shape (n_variants, n_alleles) Allele counts arrays from each population. Returns ------- loc : ndarray, bool, shape (n_variants, n_alleles) Boolean array where elements are ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/util.py#L160-L213
1,015
cggh/scikit-allel
allel/stats/fst.py
patterson_fst
def patterson_fst(aca, acb): """Estimator of differentiation between populations A and B based on the F2 parameter. Parameters ---------- aca : array_like, int, shape (n_variants, 2) Allele counts for population A. acb : array_like, int, shape (n_variants, 2) Allele counts for p...
python
def patterson_fst(aca, acb): from allel.stats.admixture import patterson_f2, h_hat num = patterson_f2(aca, acb) den = num + h_hat(aca) + h_hat(acb) return num, den
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Estimator of differentiation between populations A and B based on the F2 parameter. Parameters ---------- aca : array_like, int, shape (n_variants, 2) Allele counts for population A. acb : array_like, int, shape (n_variants, 2) Allele counts for population B. Returns ------...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/fst.py#L330-L360
1,016
cggh/scikit-allel
allel/stats/fst.py
average_weir_cockerham_fst
def average_weir_cockerham_fst(g, subpops, blen, max_allele=None): """Estimate average Fst and standard error using the block-jackknife. Parameters ---------- g : array_like, int, shape (n_variants, n_samples, ploidy) Genotype array. subpops : sequence of sequences of ints Sample in...
python
def average_weir_cockerham_fst(g, subpops, blen, max_allele=None): # calculate per-variant values a, b, c = weir_cockerham_fst(g, subpops, max_allele=max_allele) # calculate overall estimate a_sum = np.nansum(a) b_sum = np.nansum(b) c_sum = np.nansum(c) fst = a_sum / (a_sum + b_sum + c_sum)...
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Estimate average Fst and standard error using the block-jackknife. Parameters ---------- g : array_like, int, shape (n_variants, n_samples, ploidy) Genotype array. subpops : sequence of sequences of ints Sample indices for each subpopulation. blen : int Block size (number of...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/fst.py#L669-L716
1,017
cggh/scikit-allel
allel/stats/ld.py
plot_pairwise_ld
def plot_pairwise_ld(m, colorbar=True, ax=None, imshow_kwargs=None): """Plot a matrix of genotype linkage disequilibrium values between all pairs of variants. Parameters ---------- m : array_like Array of linkage disequilibrium values in condensed form. colorbar : bool, optional ...
python
def plot_pairwise_ld(m, colorbar=True, ax=None, imshow_kwargs=None): import matplotlib.pyplot as plt # check inputs m_square = ensure_square(m) # blank out lower triangle and flip up/down m_square = np.tril(m_square)[::-1, :] # set up axes if ax is None: # make a square figure wit...
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Plot a matrix of genotype linkage disequilibrium values between all pairs of variants. Parameters ---------- m : array_like Array of linkage disequilibrium values in condensed form. colorbar : bool, optional If True, add a colorbar to the current figure. ax : axes, optional ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/ld.py#L233-L292
1,018
cggh/scikit-allel
allel/io/util.py
array_to_hdf5
def array_to_hdf5(a, parent, name, **kwargs): """Write a Numpy array to an HDF5 dataset. Parameters ---------- a : ndarray Data to write. parent : string or h5py group Parent HDF5 file or group. If a string, will be treated as HDF5 file name. name : string Name o...
python
def array_to_hdf5(a, parent, name, **kwargs): import h5py h5f = None if isinstance(parent, str): h5f = h5py.File(parent, mode='a') parent = h5f try: kwargs.setdefault('chunks', True) # auto-chunking kwargs.setdefault('dtype', a.dtype) kwargs.setdefault('compr...
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Write a Numpy array to an HDF5 dataset. Parameters ---------- a : ndarray Data to write. parent : string or h5py group Parent HDF5 file or group. If a string, will be treated as HDF5 file name. name : string Name or path of dataset to write data into. kwargs : ke...
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3c979a57a100240ba959dd13f98839349530f215
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1,019
cggh/scikit-allel
allel/io/util.py
recarray_from_hdf5_group
def recarray_from_hdf5_group(*args, **kwargs): """Load a recarray from columns stored as separate datasets with an HDF5 group. Either provide an h5py group as a single positional argument, or provide two positional arguments giving the HDF5 file path and the group node path within the file. Th...
python
def recarray_from_hdf5_group(*args, **kwargs): import h5py h5f = None if len(args) == 1: group = args[0] elif len(args) == 2: file_path, node_path = args h5f = h5py.File(file_path, mode='r') try: group = h5f[node_path] except Exception as e: ...
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Load a recarray from columns stored as separate datasets with an HDF5 group. Either provide an h5py group as a single positional argument, or provide two positional arguments giving the HDF5 file path and the group node path within the file. The following optional parameters may be given. Par...
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3c979a57a100240ba959dd13f98839349530f215
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1,020
cggh/scikit-allel
allel/io/util.py
recarray_to_hdf5_group
def recarray_to_hdf5_group(ra, parent, name, **kwargs): """Write each column in a recarray to a dataset in an HDF5 group. Parameters ---------- ra : recarray Numpy recarray to store. parent : string or h5py group Parent HDF5 file or group. If a string, will be treated as HDF5 file ...
python
def recarray_to_hdf5_group(ra, parent, name, **kwargs): import h5py h5f = None if isinstance(parent, str): h5f = h5py.File(parent, mode='a') parent = h5f try: h5g = parent.require_group(name) for n in ra.dtype.names: array_to_hdf5(ra[n], h5g, n, **kwargs) ...
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Write each column in a recarray to a dataset in an HDF5 group. Parameters ---------- ra : recarray Numpy recarray to store. parent : string or h5py group Parent HDF5 file or group. If a string, will be treated as HDF5 file name. name : string Name or path of group to...
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3c979a57a100240ba959dd13f98839349530f215
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1,021
cggh/scikit-allel
allel/model/ndarray.py
subset
def subset(data, sel0, sel1): """Apply selections on first and second axes.""" # check inputs data = np.asarray(data) if data.ndim < 2: raise ValueError('data must have 2 or more dimensions') sel0 = asarray_ndim(sel0, 1, allow_none=True) sel1 = asarray_ndim(sel1, 1, allow_none=True) ...
python
def subset(data, sel0, sel1): # check inputs data = np.asarray(data) if data.ndim < 2: raise ValueError('data must have 2 or more dimensions') sel0 = asarray_ndim(sel0, 1, allow_none=True) sel1 = asarray_ndim(sel1, 1, allow_none=True) # ensure indices if sel0 is not None and sel0.dt...
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Apply selections on first and second axes.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L43-L69
1,022
cggh/scikit-allel
allel/model/ndarray.py
NumpyRecArrayWrapper.eval
def eval(self, expression, vm='python'): """Evaluate an expression against the table columns. Parameters ---------- expression : string Expression to evaluate. vm : {'numexpr', 'python'} Virtual machine to use. Returns ------- res...
python
def eval(self, expression, vm='python'): if vm == 'numexpr': import numexpr as ne return ne.evaluate(expression, local_dict=self) else: if PY2: # locals must be a mapping m = {k: self[k] for k in self.dtype.names} else: ...
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Evaluate an expression against the table columns. Parameters ---------- expression : string Expression to evaluate. vm : {'numexpr', 'python'} Virtual machine to use. Returns ------- result : ndarray
[ "Evaluate", "an", "expression", "against", "the", "table", "columns", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L129-L154
1,023
cggh/scikit-allel
allel/model/ndarray.py
NumpyRecArrayWrapper.query
def query(self, expression, vm='python'): """Evaluate expression and then use it to extract rows from the table. Parameters ---------- expression : string Expression to evaluate. vm : {'numexpr', 'python'} Virtual machine to use. Returns ...
python
def query(self, expression, vm='python'): condition = self.eval(expression, vm=vm) return self.compress(condition)
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Evaluate expression and then use it to extract rows from the table. Parameters ---------- expression : string Expression to evaluate. vm : {'numexpr', 'python'} Virtual machine to use. Returns ------- result : structured array
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L156-L173
1,024
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.fill_masked
def fill_masked(self, value=-1, copy=True): """Fill masked genotype calls with a given value. Parameters ---------- value : int, optional The fill value. copy : bool, optional If False, modify the array in place. Returns ------- g...
python
def fill_masked(self, value=-1, copy=True): if self.mask is None: raise ValueError('no mask is set') # apply the mask data = np.array(self.values, copy=copy) data[self.mask, ...] = value if copy: out = type(self)(data) # wrap out.is_phased =...
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Fill masked genotype calls with a given value. Parameters ---------- value : int, optional The fill value. copy : bool, optional If False, modify the array in place. Returns ------- g : GenotypeArray Examples -------- ...
[ "Fill", "masked", "genotype", "calls", "with", "a", "given", "value", "." ]
3c979a57a100240ba959dd13f98839349530f215
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1,025
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.is_called
def is_called(self): """Find non-missing genotype calls. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype call matches the condition. Examples -------- >>> import allel ...
python
def is_called(self): out = np.all(self.values >= 0, axis=-1) # handle mask if self.mask is not None: out &= ~self.mask return out
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Find non-missing genotype calls. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype call matches the condition. Examples -------- >>> import allel >>> g = allel.GenotypeArray(...
[ "Find", "non", "-", "missing", "genotype", "calls", "." ]
3c979a57a100240ba959dd13f98839349530f215
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1,026
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.is_missing
def is_missing(self): """Find missing genotype calls. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype call matches the condition. Examples -------- >>> import allel ...
python
def is_missing(self): out = np.any(self.values < 0, axis=-1) # handle mask if self.mask is not None: out |= self.mask return out
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Find missing genotype calls. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype call matches the condition. Examples -------- >>> import allel >>> g = allel.GenotypeArray([[[0...
[ "Find", "missing", "genotype", "calls", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L419-L454
1,027
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.is_hom
def is_hom(self, allele=None): """Find genotype calls that are homozygous. Parameters ---------- allele : int, optional Allele index. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the ...
python
def is_hom(self, allele=None): if allele is None: allele1 = self.values[..., 0, np.newaxis] other_alleles = self.values[..., 1:] tmp = (allele1 >= 0) & (allele1 == other_alleles) out = np.all(tmp, axis=-1) else: out = np.all(self.values == alle...
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Find genotype calls that are homozygous. Parameters ---------- allele : int, optional Allele index. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype call matches the cond...
[ "Find", "genotype", "calls", "that", "are", "homozygous", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L456-L506
1,028
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.is_het
def is_het(self, allele=None): """Find genotype calls that are heterozygous. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype call matches the condition. allele : int, optional He...
python
def is_het(self, allele=None): allele1 = self.values[..., 0, np.newaxis] # type: np.ndarray other_alleles = self.values[..., 1:] # type: np.ndarray out = np.all(self.values >= 0, axis=-1) & np.any(allele1 != other_alleles, axis=-1) if allele is not None: out &= np.any(self....
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Find genotype calls that are heterozygous. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype call matches the condition. allele : int, optional Heterozygous allele. Examples ...
[ "Find", "genotype", "calls", "that", "are", "heterozygous", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L580-L625
1,029
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.is_call
def is_call(self, call): """Locate genotypes with a given call. Parameters ---------- call : array_like, int, shape (ploidy,) The genotype call to find. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elemen...
python
def is_call(self, call): # guard conditions if not len(call) == self.shape[-1]: raise ValueError('invalid call ploidy: %s', repr(call)) if self.ndim == 2: call = np.asarray(call)[np.newaxis, :] else: call = np.asarray(call)[np.newaxis, np.newaxis, :] ...
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Locate genotypes with a given call. Parameters ---------- call : array_like, int, shape (ploidy,) The genotype call to find. Returns ------- out : ndarray, bool, shape (n_variants, n_samples) Array where elements are True if the genotype is `call...
[ "Locate", "genotypes", "with", "a", "given", "call", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L627-L674
1,030
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.count_called
def count_called(self, axis=None): """Count called genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count. """ b = self.is_called() return np.sum(b, axis=axis)
python
def count_called(self, axis=None): b = self.is_called() return np.sum(b, axis=axis)
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Count called genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count.
[ "Count", "called", "genotypes", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L676-L686
1,031
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.count_missing
def count_missing(self, axis=None): """Count missing genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count. """ b = self.is_missing() return np.sum(b, axis=axis)
python
def count_missing(self, axis=None): b = self.is_missing() return np.sum(b, axis=axis)
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Count missing genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count.
[ "Count", "missing", "genotypes", "." ]
3c979a57a100240ba959dd13f98839349530f215
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1,032
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.count_hom
def count_hom(self, allele=None, axis=None): """Count homozygous genotypes. Parameters ---------- allele : int, optional Allele index. axis : int, optional Axis over which to count, or None to perform overall count. """ b = self.is_hom(al...
python
def count_hom(self, allele=None, axis=None): b = self.is_hom(allele=allele) return np.sum(b, axis=axis)
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Count homozygous genotypes. Parameters ---------- allele : int, optional Allele index. axis : int, optional Axis over which to count, or None to perform overall count.
[ "Count", "homozygous", "genotypes", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L700-L712
1,033
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.count_hom_ref
def count_hom_ref(self, axis=None): """Count homozygous reference genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count. """ b = self.is_hom_ref() return np.sum(b, axis=axis)
python
def count_hom_ref(self, axis=None): b = self.is_hom_ref() return np.sum(b, axis=axis)
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Count homozygous reference genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count.
[ "Count", "homozygous", "reference", "genotypes", "." ]
3c979a57a100240ba959dd13f98839349530f215
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1,034
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.count_hom_alt
def count_hom_alt(self, axis=None): """Count homozygous alternate genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count. """ b = self.is_hom_alt() return np.sum(b, axis=axis)
python
def count_hom_alt(self, axis=None): b = self.is_hom_alt() return np.sum(b, axis=axis)
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Count homozygous alternate genotypes. Parameters ---------- axis : int, optional Axis over which to count, or None to perform overall count.
[ "Count", "homozygous", "alternate", "genotypes", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L726-L736
1,035
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.count_het
def count_het(self, allele=None, axis=None): """Count heterozygous genotypes. Parameters ---------- allele : int, optional Allele index. axis : int, optional Axis over which to count, or None to perform overall count. """ b = self.is_het(...
python
def count_het(self, allele=None, axis=None): b = self.is_het(allele=allele) return np.sum(b, axis=axis)
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Count heterozygous genotypes. Parameters ---------- allele : int, optional Allele index. axis : int, optional Axis over which to count, or None to perform overall count.
[ "Count", "heterozygous", "genotypes", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L738-L750
1,036
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.count_call
def count_call(self, call, axis=None): """Count genotypes with a given call. Parameters ---------- call : array_like, int, shape (ploidy,) The genotype call to find. axis : int, optional Axis over which to count, or None to perform overall count. ...
python
def count_call(self, call, axis=None): b = self.is_call(call=call) return np.sum(b, axis=axis)
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Count genotypes with a given call. Parameters ---------- call : array_like, int, shape (ploidy,) The genotype call to find. axis : int, optional Axis over which to count, or None to perform overall count.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L752-L764
1,037
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.to_n_ref
def to_n_ref(self, fill=0, dtype='i1'): """Transform each genotype call into the number of reference alleles. Parameters ---------- fill : int, optional Use this value to represent missing calls. dtype : dtype, optional Output dtype. Retu...
python
def to_n_ref(self, fill=0, dtype='i1'): # count number of alternate alleles out = np.empty(self.shape[:-1], dtype=dtype) np.sum(self.values == 0, axis=-1, out=out) # fill missing calls if fill != 0: m = self.is_missing() out[m] = fill # handle ma...
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Transform each genotype call into the number of reference alleles. Parameters ---------- fill : int, optional Use this value to represent missing calls. dtype : dtype, optional Output dtype. Returns ------- out : ndarray, int8, sh...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L766-L825
1,038
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.to_allele_counts
def to_allele_counts(self, max_allele=None, dtype='u1'): """Transform genotype calls into allele counts per call. Parameters ---------- max_allele : int, optional Highest allele index. Provide this value to speed up computation. dtype : dtype, optional Ou...
python
def to_allele_counts(self, max_allele=None, dtype='u1'): # determine alleles to count if max_allele is None: max_allele = self.max() alleles = list(range(max_allele + 1)) # set up output array outshape = self.shape[:-1] + (len(alleles),) out = np.zeros(outsha...
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Transform genotype calls into allele counts per call. Parameters ---------- max_allele : int, optional Highest allele index. Provide this value to speed up computation. dtype : dtype, optional Output dtype. Returns ------- out : ndarray, ...
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3c979a57a100240ba959dd13f98839349530f215
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1,039
cggh/scikit-allel
allel/model/ndarray.py
Genotypes.to_gt
def to_gt(self, max_allele=None): """Convert genotype calls to VCF-style string representation. Returns ------- gt : ndarray, string, shape (n_variants, n_samples) Examples -------- >>> import allel >>> g = allel.GenotypeArray([[[0, 0], [0, 1]], ...
python
def to_gt(self, max_allele=None): # how many characters needed per allele call? if max_allele is None: max_allele = np.max(self) if max_allele <= 0: max_allele = 1 nchar = int(np.floor(np.log10(max_allele))) + 1 # convert to string a = self.astype...
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Convert genotype calls to VCF-style string representation. Returns ------- gt : ndarray, string, shape (n_variants, n_samples) Examples -------- >>> import allel >>> g = allel.GenotypeArray([[[0, 0], [0, 1]], ... [[0, 2], [1, 1]...
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3c979a57a100240ba959dd13f98839349530f215
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1,040
cggh/scikit-allel
allel/model/ndarray.py
GenotypeArray.to_packed
def to_packed(self, boundscheck=True): """Pack diploid genotypes into a single byte for each genotype, using the left-most 4 bits for the first allele and the right-most 4 bits for the second allele. Allows single byte encoding of diploid genotypes for variants with up to 15 alleles. ...
python
def to_packed(self, boundscheck=True): check_ploidy(self.ploidy, 2) if boundscheck: amx = self.max() if amx > 14: raise ValueError('max allele for packing is 14, found %s' % amx) amn = self.min() if amn < -1: raise ValueErr...
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Pack diploid genotypes into a single byte for each genotype, using the left-most 4 bits for the first allele and the right-most 4 bits for the second allele. Allows single byte encoding of diploid genotypes for variants with up to 15 alleles. Parameters ---------- bounds...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L1553-L1602
1,041
cggh/scikit-allel
allel/model/ndarray.py
GenotypeArray.from_packed
def from_packed(cls, packed): """Unpack diploid genotypes that have been bit-packed into single bytes. Parameters ---------- packed : ndarray, uint8, shape (n_variants, n_samples) Bit-packed diploid genotype array. Returns ------- g : Genotyp...
python
def from_packed(cls, packed): # check arguments packed = np.asarray(packed) check_ndim(packed, 2) check_dtype(packed, 'u1') packed = memoryview_safe(packed) data = genotype_array_unpack_diploid(packed) return cls(data)
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Unpack diploid genotypes that have been bit-packed into single bytes. Parameters ---------- packed : ndarray, uint8, shape (n_variants, n_samples) Bit-packed diploid genotype array. Returns ------- g : GenotypeArray, shape (n_variants, n_samples, 2) ...
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3c979a57a100240ba959dd13f98839349530f215
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1,042
cggh/scikit-allel
allel/model/ndarray.py
GenotypeArray.from_sparse
def from_sparse(m, ploidy, order=None, out=None): """Construct a genotype array from a sparse matrix. Parameters ---------- m : scipy.sparse.spmatrix Sparse matrix ploidy : int The sample ploidy. order : {'C', 'F'}, optional Whether to...
python
def from_sparse(m, ploidy, order=None, out=None): h = HaplotypeArray.from_sparse(m, order=order, out=out) g = h.to_genotypes(ploidy=ploidy) return g
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Construct a genotype array from a sparse matrix. Parameters ---------- m : scipy.sparse.spmatrix Sparse matrix ploidy : int The sample ploidy. order : {'C', 'F'}, optional Whether to store data in C (row-major) or Fortran (column-major) ...
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3c979a57a100240ba959dd13f98839349530f215
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1,043
cggh/scikit-allel
allel/model/ndarray.py
GenotypeArray.haploidify_samples
def haploidify_samples(self): """Construct a pseudo-haplotype for each sample by randomly selecting an allele from each genotype call. Returns ------- h : HaplotypeArray Notes ----- If a mask has been set, it is ignored by this function. Example...
python
def haploidify_samples(self): # N.B., this implementation is obscure and uses more memory than # necessary, TODO review # define the range of possible indices, e.g., diploid => (0, 1) index_range = np.arange(0, self.ploidy, dtype='u1') # create a random index for each genotype ...
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Construct a pseudo-haplotype for each sample by randomly selecting an allele from each genotype call. Returns ------- h : HaplotypeArray Notes ----- If a mask has been set, it is ignored by this function. Examples -------- >>> import al...
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3c979a57a100240ba959dd13f98839349530f215
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1,044
cggh/scikit-allel
allel/model/ndarray.py
GenotypeArray.count_alleles_subpops
def count_alleles_subpops(self, subpops, max_allele=None): """Count alleles for multiple subpopulations simultaneously. Parameters ---------- subpops : dict (string -> sequence of ints) Mapping of subpopulation names to sample indices. max_allele : int, optional ...
python
def count_alleles_subpops(self, subpops, max_allele=None): if max_allele is None: max_allele = self.max() out = {name: self.count_alleles(max_allele=max_allele, subpop=subpop) for name, subpop in subpops.items()} return out
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Count alleles for multiple subpopulations simultaneously. Parameters ---------- subpops : dict (string -> sequence of ints) Mapping of subpopulation names to sample indices. max_allele : int, optional The highest allele index to count. Alleles above this will be ...
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3c979a57a100240ba959dd13f98839349530f215
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1,045
cggh/scikit-allel
allel/model/ndarray.py
HaplotypeArray.subset
def subset(self, sel0=None, sel1=None): """Make a sub-selection of variants and haplotypes. Parameters ---------- sel0 : array_like Boolean array or array of indices selecting variants. sel1 : array_like Boolean array or array of indices selecting haploty...
python
def subset(self, sel0=None, sel1=None): return subset_haplotype_array(self, sel0, sel1, cls=type(self), subset=subset)
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Make a sub-selection of variants and haplotypes. Parameters ---------- sel0 : array_like Boolean array or array of indices selecting variants. sel1 : array_like Boolean array or array of indices selecting haplotypes. Returns ------- out :...
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3c979a57a100240ba959dd13f98839349530f215
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1,046
cggh/scikit-allel
allel/model/ndarray.py
HaplotypeArray.concatenate
def concatenate(self, others, axis=0): """Join a sequence of arrays along an existing axis. Parameters ---------- others : sequence of array_like The arrays must have the same shape, except in the dimension corresponding to `axis` (the first, by default). ...
python
def concatenate(self, others, axis=0): return concatenate_haplotype_array(self, others, axis=axis, cls=type(self), concatenate=np.concatenate)
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Join a sequence of arrays along an existing axis. Parameters ---------- others : sequence of array_like The arrays must have the same shape, except in the dimension corresponding to `axis` (the first, by default). axis : int, optional The axis along w...
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3c979a57a100240ba959dd13f98839349530f215
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1,047
cggh/scikit-allel
allel/model/ndarray.py
HaplotypeArray.to_genotypes
def to_genotypes(self, ploidy, copy=False): """Reshape a haplotype array to view it as genotypes by restoring the ploidy dimension. Parameters ---------- ploidy : int The sample ploidy. copy : bool, optional If True, make a copy of data. ...
python
def to_genotypes(self, ploidy, copy=False): # check ploidy is compatible if (self.shape[1] % ploidy) > 0: raise ValueError('incompatible ploidy') # reshape newshape = (self.shape[0], -1, ploidy) data = self.reshape(newshape) # wrap g = GenotypeArray(...
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Reshape a haplotype array to view it as genotypes by restoring the ploidy dimension. Parameters ---------- ploidy : int The sample ploidy. copy : bool, optional If True, make a copy of data. Returns ------- g : ndarray, int, shape...
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3c979a57a100240ba959dd13f98839349530f215
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1,048
cggh/scikit-allel
allel/model/ndarray.py
HaplotypeArray.from_sparse
def from_sparse(m, order=None, out=None): """Construct a haplotype array from a sparse matrix. Parameters ---------- m : scipy.sparse.spmatrix Sparse matrix order : {'C', 'F'}, optional Whether to store data in C (row-major) or Fortran (column-major) ...
python
def from_sparse(m, order=None, out=None): import scipy.sparse # check arguments if not scipy.sparse.isspmatrix(m): raise ValueError('not a sparse matrix: %r' % m) # convert to dense array data = m.toarray(order=order, out=out) # wrap h = HaplotypeAr...
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Construct a haplotype array from a sparse matrix. Parameters ---------- m : scipy.sparse.spmatrix Sparse matrix order : {'C', 'F'}, optional Whether to store data in C (row-major) or Fortran (column-major) order in memory. out : ndarray, shape...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L2306-L2356
1,049
cggh/scikit-allel
allel/model/ndarray.py
HaplotypeArray.distinct
def distinct(self): """Return sets of indices for each distinct haplotype.""" # setup collection d = collections.defaultdict(set) # iterate over haplotypes for i in range(self.shape[1]): # hash the haplotype k = hash(self.values[:, i].tobytes()) ...
python
def distinct(self): # setup collection d = collections.defaultdict(set) # iterate over haplotypes for i in range(self.shape[1]): # hash the haplotype k = hash(self.values[:, i].tobytes()) # collect d[k].add(i) # extract sets, so...
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Return sets of indices for each distinct haplotype.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L2492-L2508
1,050
cggh/scikit-allel
allel/model/ndarray.py
HaplotypeArray.distinct_counts
def distinct_counts(self): """Return counts for each distinct haplotype.""" # hash the haplotypes k = [hash(self.values[:, i].tobytes()) for i in range(self.shape[1])] # count and sort # noinspection PyArgumentList counts = sorted(collections.Counter(k).values(), revers...
python
def distinct_counts(self): # hash the haplotypes k = [hash(self.values[:, i].tobytes()) for i in range(self.shape[1])] # count and sort # noinspection PyArgumentList counts = sorted(collections.Counter(k).values(), reverse=True) return np.asarray(counts)
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Return counts for each distinct haplotype.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L2510-L2520
1,051
cggh/scikit-allel
allel/model/ndarray.py
HaplotypeArray.distinct_frequencies
def distinct_frequencies(self): """Return frequencies for each distinct haplotype.""" c = self.distinct_counts() n = self.shape[1] return c / n
python
def distinct_frequencies(self): c = self.distinct_counts() n = self.shape[1] return c / n
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Return frequencies for each distinct haplotype.
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3c979a57a100240ba959dd13f98839349530f215
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1,052
cggh/scikit-allel
allel/model/ndarray.py
AlleleCountsArray.to_frequencies
def to_frequencies(self, fill=np.nan): """Compute allele frequencies. Parameters ---------- fill : float, optional Value to use when number of allele calls is 0. Returns ------- af : ndarray, float, shape (n_variants, n_alleles) Examples ...
python
def to_frequencies(self, fill=np.nan): an = np.sum(self, axis=1)[:, None] with ignore_invalid(): af = np.where(an > 0, self / an, fill) return af
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Compute allele frequencies. Parameters ---------- fill : float, optional Value to use when number of allele calls is 0. Returns ------- af : ndarray, float, shape (n_variants, n_alleles) Examples -------- >>> import allel >>...
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3c979a57a100240ba959dd13f98839349530f215
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1,053
cggh/scikit-allel
allel/model/ndarray.py
AlleleCountsArray.max_allele
def max_allele(self): """Return the highest allele index for each variant. Returns ------- n : ndarray, int, shape (n_variants,) Allele index array. Examples -------- >>> import allel >>> g = allel.GenotypeArray([[[0, 0], [0, 1]], .....
python
def max_allele(self): out = np.empty(self.shape[0], dtype='i1') out.fill(-1) for i in range(self.shape[1]): d = self.values[:, i] > 0 out[d] = i return out
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Return the highest allele index for each variant. Returns ------- n : ndarray, int, shape (n_variants,) Allele index array. Examples -------- >>> import allel >>> g = allel.GenotypeArray([[[0, 0], [0, 1]], ... [[0, 2...
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3c979a57a100240ba959dd13f98839349530f215
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1,054
cggh/scikit-allel
allel/model/ndarray.py
SortedIndex.is_unique
def is_unique(self): """True if no duplicate entries.""" if self._is_unique is None: t = self.values[:-1] == self.values[1:] # type: np.ndarray self._is_unique = ~np.any(t) return self._is_unique
python
def is_unique(self): if self._is_unique is None: t = self.values[:-1] == self.values[1:] # type: np.ndarray self._is_unique = ~np.any(t) return self._is_unique
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True if no duplicate entries.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L3404-L3409
1,055
cggh/scikit-allel
allel/model/ndarray.py
SortedIndex.intersect
def intersect(self, other): """Intersect with `other` sorted index. Parameters ---------- other : array_like, int Array of values to intersect with. Returns ------- out : SortedIndex Values in common. Examples -------- ...
python
def intersect(self, other): loc = self.locate_keys(other, strict=False) return self.compress(loc, axis=0)
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Intersect with `other` sorted index. Parameters ---------- other : array_like, int Array of values to intersect with. Returns ------- out : SortedIndex Values in common. Examples -------- >>> import allel >>> idx...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L3558-L3584
1,056
cggh/scikit-allel
allel/model/ndarray.py
SortedIndex.locate_intersection_ranges
def locate_intersection_ranges(self, starts, stops): """Locate the intersection with a set of ranges. Parameters ---------- starts : array_like, int Range start values. stops : array_like, int Range stop values. Returns ------- lo...
python
def locate_intersection_ranges(self, starts, stops): # check inputs starts = asarray_ndim(starts, 1) stops = asarray_ndim(stops, 1) check_dim0_aligned(starts, stops) # find indices of start and stop values in idx start_indices = np.searchsorted(self, starts) stop...
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Locate the intersection with a set of ranges. Parameters ---------- starts : array_like, int Range start values. stops : array_like, int Range stop values. Returns ------- loc : ndarray, bool Boolean array with location of ent...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L3665-L3724
1,057
cggh/scikit-allel
allel/model/ndarray.py
SortedIndex.locate_ranges
def locate_ranges(self, starts, stops, strict=True): """Locate items within the given ranges. Parameters ---------- starts : array_like, int Range start values. stops : array_like, int Range stop values. strict : bool, optional If True...
python
def locate_ranges(self, starts, stops, strict=True): loc, found = self.locate_intersection_ranges(starts, stops) if strict and np.any(~found): raise KeyError(starts[~found], stops[~found]) return loc
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Locate items within the given ranges. Parameters ---------- starts : array_like, int Range start values. stops : array_like, int Range stop values. strict : bool, optional If True, raise KeyError if any ranges contain no entries. Retu...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L3726-L3767
1,058
cggh/scikit-allel
allel/model/ndarray.py
SortedIndex.intersect_ranges
def intersect_ranges(self, starts, stops): """Intersect with a set of ranges. Parameters ---------- starts : array_like, int Range start values. stops : array_like, int Range stop values. Returns ------- idx : SortedIndex ...
python
def intersect_ranges(self, starts, stops): loc = self.locate_ranges(starts, stops, strict=False) return self.compress(loc, axis=0)
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Intersect with a set of ranges. Parameters ---------- starts : array_like, int Range start values. stops : array_like, int Range stop values. Returns ------- idx : SortedIndex Examples -------- >>> import allel ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L3769-L3800
1,059
cggh/scikit-allel
allel/model/ndarray.py
VariantTable.set_index
def set_index(self, index): """Set or reset the index. Parameters ---------- index : string or pair of strings, optional Names of columns to use for positional index, e.g., 'POS' if table contains a 'POS' column and records from a single chromosome/co...
python
def set_index(self, index): if index is None: pass elif isinstance(index, str): index = SortedIndex(self[index], copy=False) elif isinstance(index, (tuple, list)) and len(index) == 2: index = SortedMultiIndex(self[index[0]], self[index[1]], ...
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Set or reset the index. Parameters ---------- index : string or pair of strings, optional Names of columns to use for positional index, e.g., 'POS' if table contains a 'POS' column and records from a single chromosome/contig, or ('CHROM', 'POS') if table cont...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L4541-L4563
1,060
cggh/scikit-allel
allel/model/ndarray.py
VariantTable.query_position
def query_position(self, chrom=None, position=None): """Query the table, returning row or rows matching the given genomic position. Parameters ---------- chrom : string, optional Chromosome/contig. position : int, optional Position (1-based). ...
python
def query_position(self, chrom=None, position=None): if self.index is None: raise ValueError('no index has been set') if isinstance(self.index, SortedIndex): # ignore chrom loc = self.index.locate_key(position) else: loc = self.index.locate_key(chr...
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Query the table, returning row or rows matching the given genomic position. Parameters ---------- chrom : string, optional Chromosome/contig. position : int, optional Position (1-based). Returns ------- result : row or VariantTabl...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L4565-L4589
1,061
cggh/scikit-allel
allel/model/ndarray.py
VariantTable.query_region
def query_region(self, chrom=None, start=None, stop=None): """Query the table, returning row or rows within the given genomic region. Parameters ---------- chrom : string, optional Chromosome/contig. start : int, optional Region start position (1-...
python
def query_region(self, chrom=None, start=None, stop=None): if self.index is None: raise ValueError('no index has been set') if isinstance(self.index, SortedIndex): # ignore chrom loc = self.index.locate_range(start, stop) else: loc = self.index.loc...
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Query the table, returning row or rows within the given genomic region. Parameters ---------- chrom : string, optional Chromosome/contig. start : int, optional Region start position (1-based). stop : int, optional Region stop position ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L4591-L4616
1,062
cggh/scikit-allel
allel/model/ndarray.py
FeatureTable.to_mask
def to_mask(self, size, start_name='start', stop_name='end'): """Construct a mask array where elements are True if the fall within features in the table. Parameters ---------- size : int Size of chromosome/contig. start_name : string, optional Na...
python
def to_mask(self, size, start_name='start', stop_name='end'): m = np.zeros(size, dtype=bool) for start, stop in self[[start_name, stop_name]]: m[start-1:stop] = True return m
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Construct a mask array where elements are True if the fall within features in the table. Parameters ---------- size : int Size of chromosome/contig. start_name : string, optional Name of column with start coordinates. stop_name : string, optional...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L4734-L4757
1,063
cggh/scikit-allel
allel/model/ndarray.py
FeatureTable.from_gff3
def from_gff3(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', dtype=None): """Read a feature table from a GFF3 format file. Parameters ---------- path : string File path. attributes : list of strings, optional ...
python
def from_gff3(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', dtype=None): a = gff3_to_recarray(path, attributes=attributes, region=region, score_fill=score_fill, phase_fill=phase_fill, attributes_...
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Read a feature table from a GFF3 format file. Parameters ---------- path : string File path. attributes : list of strings, optional List of columns to extract from the "attributes" field. region : string, optional Genome region to extract. If ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/ndarray.py#L4760-L4795
1,064
cggh/scikit-allel
allel/stats/distance.py
pcoa
def pcoa(dist): """Perform principal coordinate analysis of a distance matrix, a.k.a. classical multi-dimensional scaling. Parameters ---------- dist : array_like Distance matrix in condensed form. Returns ------- coords : ndarray, shape (n_samples, n_dimensions) Transf...
python
def pcoa(dist): import scipy.linalg # This implementation is based on the skbio.math.stats.ordination.PCoA # implementation, with some minor adjustments. # check inputs dist = ensure_square(dist) # perform scaling e_matrix = (dist ** 2) / -2 row_means = np.mean(e_matrix, axis=1, keepd...
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Perform principal coordinate analysis of a distance matrix, a.k.a. classical multi-dimensional scaling. Parameters ---------- dist : array_like Distance matrix in condensed form. Returns ------- coords : ndarray, shape (n_samples, n_dimensions) Transformed coordinates for t...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/distance.py#L199-L252
1,065
cggh/scikit-allel
allel/stats/distance.py
condensed_coords
def condensed_coords(i, j, n): """Transform square distance matrix coordinates to the corresponding index into a condensed, 1D form of the matrix. Parameters ---------- i : int Row index. j : int Column index. n : int Size of the square matrix (length of first or sec...
python
def condensed_coords(i, j, n): # guard conditions if i == j or i >= n or j >= n or i < 0 or j < 0: raise ValueError('invalid coordinates: %s, %s' % (i, j)) # normalise order i, j = sorted([i, j]) # calculate number of items in rows before this one (sum of arithmetic # progression) ...
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Transform square distance matrix coordinates to the corresponding index into a condensed, 1D form of the matrix. Parameters ---------- i : int Row index. j : int Column index. n : int Size of the square matrix (length of first or second dimension). Returns -----...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/distance.py#L255-L288
1,066
cggh/scikit-allel
allel/stats/distance.py
condensed_coords_within
def condensed_coords_within(pop, n): """Return indices into a condensed distance matrix for all pairwise comparisons within the given population. Parameters ---------- pop : array_like, int Indices of samples or haplotypes within the population. n : int Size of the square matrix...
python
def condensed_coords_within(pop, n): return [condensed_coords(i, j, n) for i, j in itertools.combinations(sorted(pop), 2)]
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Return indices into a condensed distance matrix for all pairwise comparisons within the given population. Parameters ---------- pop : array_like, int Indices of samples or haplotypes within the population. n : int Size of the square matrix (length of first or second dimension). ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/distance.py#L291-L309
1,067
cggh/scikit-allel
allel/stats/distance.py
condensed_coords_between
def condensed_coords_between(pop1, pop2, n): """Return indices into a condensed distance matrix for all pairwise comparisons between two populations. Parameters ---------- pop1 : array_like, int Indices of samples or haplotypes within the first population. pop2 : array_like, int ...
python
def condensed_coords_between(pop1, pop2, n): return [condensed_coords(i, j, n) for i, j in itertools.product(sorted(pop1), sorted(pop2))]
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Return indices into a condensed distance matrix for all pairwise comparisons between two populations. Parameters ---------- pop1 : array_like, int Indices of samples or haplotypes within the first population. pop2 : array_like, int Indices of samples or haplotypes within the second ...
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3c979a57a100240ba959dd13f98839349530f215
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1,068
cggh/scikit-allel
allel/stats/distance.py
plot_pairwise_distance
def plot_pairwise_distance(dist, labels=None, colorbar=True, ax=None, imshow_kwargs=None): """Plot a pairwise distance matrix. Parameters ---------- dist : array_like The distance matrix in condensed form. labels : sequence of strings, optional Sample labe...
python
def plot_pairwise_distance(dist, labels=None, colorbar=True, ax=None, imshow_kwargs=None): import matplotlib.pyplot as plt # check inputs dist_square = ensure_square(dist) # set up axes if ax is None: # make a square figure x = plt.rcParams['figure.figsiz...
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Plot a pairwise distance matrix. Parameters ---------- dist : array_like The distance matrix in condensed form. labels : sequence of strings, optional Sample labels for the axes. colorbar : bool, optional If True, add a colorbar to the current figure. ax : axes, optional...
[ "Plot", "a", "pairwise", "distance", "matrix", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/distance.py#L335-L396
1,069
cggh/scikit-allel
allel/stats/misc.py
jackknife
def jackknife(values, statistic): """Estimate standard error for `statistic` computed over `values` using the jackknife. Parameters ---------- values : array_like or tuple of array_like Input array, or tuple of input arrays. statistic : function The statistic to compute. Re...
python
def jackknife(values, statistic): if isinstance(values, tuple): # multiple input arrays n = len(values[0]) masked_values = [np.ma.asarray(v) for v in values] for m in masked_values: assert m.ndim == 1, 'only 1D arrays supported' assert m.shape[0] == n, 'input ...
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Estimate standard error for `statistic` computed over `values` using the jackknife. Parameters ---------- values : array_like or tuple of array_like Input array, or tuple of input arrays. statistic : function The statistic to compute. Returns ------- m : float M...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/misc.py#L15-L82
1,070
cggh/scikit-allel
allel/stats/misc.py
tabulate_state_transitions
def tabulate_state_transitions(x, states, pos=None): """Construct a dataframe where each row provides information about a state transition. Parameters ---------- x : array_like, int 1-dimensional array of state values. states : set Set of states of interest. Any state value not in t...
python
def tabulate_state_transitions(x, states, pos=None): # check inputs x = asarray_ndim(x, 1) check_integer_dtype(x) x = memoryview_safe(x) # find state transitions switch_points, transitions, _ = state_transitions(x, states) # start to build a dataframe items = [('lstate', transitions[:,...
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Construct a dataframe where each row provides information about a state transition. Parameters ---------- x : array_like, int 1-dimensional array of state values. states : set Set of states of interest. Any state value not in this set will be ignored. pos : array_like, int, optional...
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3c979a57a100240ba959dd13f98839349530f215
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1,071
cggh/scikit-allel
allel/stats/misc.py
tabulate_state_blocks
def tabulate_state_blocks(x, states, pos=None): """Construct a dataframe where each row provides information about continuous state blocks. Parameters ---------- x : array_like, int 1-dimensional array of state values. states : set Set of states of interest. Any state value not in t...
python
def tabulate_state_blocks(x, states, pos=None): # check inputs x = asarray_ndim(x, 1) check_integer_dtype(x) x = memoryview_safe(x) # find state transitions switch_points, transitions, observations = state_transitions(x, states) # setup some helpers t = transitions[1:, 0] o = obser...
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Construct a dataframe where each row provides information about continuous state blocks. Parameters ---------- x : array_like, int 1-dimensional array of state values. states : set Set of states of interest. Any state value not in this set will be ignored. pos : array_like, int, opt...
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3c979a57a100240ba959dd13f98839349530f215
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1,072
cggh/scikit-allel
allel/io/vcf_write.py
write_vcf
def write_vcf(path, callset, rename=None, number=None, description=None, fill=None, write_header=True): """Preliminary support for writing a VCF file. Currently does not support sample data. Needs further work.""" names, callset = normalize_callset(callset) with open(path, 'w') as vcf_fi...
python
def write_vcf(path, callset, rename=None, number=None, description=None, fill=None, write_header=True): names, callset = normalize_callset(callset) with open(path, 'w') as vcf_file: if write_header: write_vcf_header(vcf_file, names, callset=callset, rename=rename, ...
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Preliminary support for writing a VCF file. Currently does not support sample data. Needs further work.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/io/vcf_write.py#L50-L61
1,073
cggh/scikit-allel
allel/util.py
asarray_ndim
def asarray_ndim(a, *ndims, **kwargs): """Ensure numpy array. Parameters ---------- a : array_like *ndims : int, optional Allowed values for number of dimensions. **kwargs Passed through to :func:`numpy.array`. Returns ------- a : numpy.ndarray """ allow_no...
python
def asarray_ndim(a, *ndims, **kwargs): allow_none = kwargs.pop('allow_none', False) kwargs.setdefault('copy', False) if a is None and allow_none: return None a = np.array(a, **kwargs) if a.ndim not in ndims: if len(ndims) > 1: expect_str = 'one of %s' % str(ndims) ...
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Ensure numpy array. Parameters ---------- a : array_like *ndims : int, optional Allowed values for number of dimensions. **kwargs Passed through to :func:`numpy.array`. Returns ------- a : numpy.ndarray
[ "Ensure", "numpy", "array", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/util.py#L32-L61
1,074
cggh/scikit-allel
allel/util.py
hdf5_cache
def hdf5_cache(filepath=None, parent=None, group=None, names=None, typed=False, hashed_key=False, **h5dcreate_kwargs): """HDF5 cache decorator. Parameters ---------- filepath : string, optional Path to HDF5 file. If None a temporary file name will be used. parent : string, op...
python
def hdf5_cache(filepath=None, parent=None, group=None, names=None, typed=False, hashed_key=False, **h5dcreate_kwargs): # initialise HDF5 file path if filepath is None: import tempfile filepath = tempfile.mktemp(prefix='scikit_allel_', suffix='.h5') atexit.register(os.remov...
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HDF5 cache decorator. Parameters ---------- filepath : string, optional Path to HDF5 file. If None a temporary file name will be used. parent : string, optional Path to group within HDF5 file to use as parent. If None the root group will be used. group : string, optional ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/util.py#L283-L401
1,075
cggh/scikit-allel
allel/stats/decomposition.py
pca
def pca(gn, n_components=10, copy=True, scaler='patterson', ploidy=2): """Perform principal components analysis of genotype data, via singular value decomposition. Parameters ---------- gn : array_like, float, shape (n_variants, n_samples) Genotypes at biallelic variants, coded as the numb...
python
def pca(gn, n_components=10, copy=True, scaler='patterson', ploidy=2): # set up the model model = GenotypePCA(n_components, copy=copy, scaler=scaler, ploidy=ploidy) # fit the model and project the input data onto the new dimensions coords = model.fit_transform(gn) return coords, model
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Perform principal components analysis of genotype data, via singular value decomposition. Parameters ---------- gn : array_like, float, shape (n_variants, n_samples) Genotypes at biallelic variants, coded as the number of alternate alleles per call (i.e., 0 = hom ref, 1 = het, 2 = hom ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/decomposition.py#L11-L60
1,076
cggh/scikit-allel
allel/stats/decomposition.py
randomized_pca
def randomized_pca(gn, n_components=10, copy=True, iterated_power=3, random_state=None, scaler='patterson', ploidy=2): """Perform principal components analysis of genotype data, via an approximate truncated singular value decomposition using randomization to speed up the computation. ...
python
def randomized_pca(gn, n_components=10, copy=True, iterated_power=3, random_state=None, scaler='patterson', ploidy=2): # set up the model model = GenotypeRandomizedPCA(n_components, copy=copy, iterated_power=iterated_power, r...
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Perform principal components analysis of genotype data, via an approximate truncated singular value decomposition using randomization to speed up the computation. Parameters ---------- gn : array_like, float, shape (n_variants, n_samples) Genotypes at biallelic variants, coded as the numbe...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/decomposition.py#L126-L187
1,077
cggh/scikit-allel
allel/model/dask.py
get_chunks
def get_chunks(data, chunks=None): """Try to guess a reasonable chunk shape to use for block-wise algorithms operating over `data`.""" if chunks is None: if hasattr(data, 'chunklen') and hasattr(data, 'shape'): # bcolz carray, chunk first dimension only return (data.chunkle...
python
def get_chunks(data, chunks=None): if chunks is None: if hasattr(data, 'chunklen') and hasattr(data, 'shape'): # bcolz carray, chunk first dimension only return (data.chunklen,) + data.shape[1:] elif hasattr(data, 'chunks') and hasattr(data, 'shape') and \ l...
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Try to guess a reasonable chunk shape to use for block-wise algorithms operating over `data`.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/model/dask.py#L47-L74
1,078
cggh/scikit-allel
allel/io/gff.py
iter_gff3
def iter_gff3(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', tabix='tabix'): """Iterate over records in a GFF3 file. Parameters ---------- path : string Path to input file. attributes : list of strings, optional List of columns t...
python
def iter_gff3(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', tabix='tabix'): # prepare fill values for attributes if attributes is not None: attributes = list(attributes) if isinstance(attributes_fill, (list, tuple)): if len(attri...
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Iterate over records in a GFF3 file. Parameters ---------- path : string Path to input file. attributes : list of strings, optional List of columns to extract from the "attributes" field. region : string, optional Genome region to extract. If given, file must be position ...
[ "Iterate", "over", "records", "in", "a", "GFF3", "file", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/io/gff.py#L31-L118
1,079
cggh/scikit-allel
allel/io/gff.py
gff3_to_recarray
def gff3_to_recarray(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', tabix='tabix', dtype=None): """Load data from a GFF3 into a NumPy recarray. Parameters ---------- path : string Path to input file. attributes : list of strings, ...
python
def gff3_to_recarray(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', tabix='tabix', dtype=None): # read records recs = list(iter_gff3(path, attributes=attributes, region=region, score_fill=score_fill, phase_fill=phase_fill, ...
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Load data from a GFF3 into a NumPy recarray. Parameters ---------- path : string Path to input file. attributes : list of strings, optional List of columns to extract from the "attributes" field. region : string, optional Genome region to extract. If given, file must be posi...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/io/gff.py#L124-L178
1,080
cggh/scikit-allel
allel/io/gff.py
gff3_to_dataframe
def gff3_to_dataframe(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', tabix='tabix', **kwargs): """Load data from a GFF3 into a pandas DataFrame. Parameters ---------- path : string Path to input file. attributes : list of strings...
python
def gff3_to_dataframe(path, attributes=None, region=None, score_fill=-1, phase_fill=-1, attributes_fill='.', tabix='tabix', **kwargs): import pandas # read records recs = list(iter_gff3(path, attributes=attributes, region=region, score_fill=score_fill, phase_...
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Load data from a GFF3 into a pandas DataFrame. Parameters ---------- path : string Path to input file. attributes : list of strings, optional List of columns to extract from the "attributes" field. region : string, optional Genome region to extract. If given, file must be po...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/io/gff.py#L181-L223
1,081
cggh/scikit-allel
allel/stats/selection.py
voight_painting
def voight_painting(h): """Paint haplotypes, assigning a unique integer to each shared haplotype prefix. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. Returns ------- painting : ndarray, int, shape (n_variants, n_haplotypes) ...
python
def voight_painting(h): # check inputs # N.B., ensure int8 so we can use cython optimisation h = HaplotypeArray(np.asarray(h), copy=False) if h.max() > 1: raise NotImplementedError('only biallelic variants are supported') if h.min() < 0: raise NotImplementedError('missing calls are n...
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Paint haplotypes, assigning a unique integer to each shared haplotype prefix. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. Returns ------- painting : ndarray, int, shape (n_variants, n_haplotypes) Painting array. indices :...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L62-L95
1,082
cggh/scikit-allel
allel/stats/selection.py
plot_voight_painting
def plot_voight_painting(painting, palette='colorblind', flank='right', ax=None, height_factor=0.01): """Plot a painting of shared haplotype prefixes. Parameters ---------- painting : array_like, int, shape (n_variants, n_haplotypes) Painting array. ax : axes, optio...
python
def plot_voight_painting(painting, palette='colorblind', flank='right', ax=None, height_factor=0.01): import seaborn as sns from matplotlib.colors import ListedColormap import matplotlib.pyplot as plt if flank == 'left': painting = painting[::-1] n_colors = paintin...
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Plot a painting of shared haplotype prefixes. Parameters ---------- painting : array_like, int, shape (n_variants, n_haplotypes) Painting array. ax : axes, optional The axes on which to draw. If not provided, a new figure will be created. palette : string, optional A...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L98-L148
1,083
cggh/scikit-allel
allel/stats/selection.py
fig_voight_painting
def fig_voight_painting(h, index=None, palette='colorblind', height_factor=0.01, fig=None): """Make a figure of shared haplotype prefixes for both left and right flanks, centred on some variant of choice. Parameters ---------- h : array_like, int, shape (n_variants, n_haplot...
python
def fig_voight_painting(h, index=None, palette='colorblind', height_factor=0.01, fig=None): import matplotlib.pyplot as plt from matplotlib.gridspec import GridSpec import seaborn as sns # check inputs h = asarray_ndim(h, 2) if index is None: # use midpoint ...
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Make a figure of shared haplotype prefixes for both left and right flanks, centred on some variant of choice. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. index : int, optional Index of the variant within the haplotype array to centre ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L151-L251
1,084
cggh/scikit-allel
allel/stats/selection.py
compute_ihh_gaps
def compute_ihh_gaps(pos, map_pos, gap_scale, max_gap, is_accessible): """Compute spacing between variants for integrating haplotype homozygosity. Parameters ---------- pos : array_like, int, shape (n_variants,) Variant positions (physical distance). map_pos : array_like, float, shape (...
python
def compute_ihh_gaps(pos, map_pos, gap_scale, max_gap, is_accessible): # check inputs if map_pos is None: # integrate over physical distance map_pos = pos else: map_pos = asarray_ndim(map_pos, 1) check_dim0_aligned(pos, map_pos) # compute physical gaps physical_gaps ...
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Compute spacing between variants for integrating haplotype homozygosity. Parameters ---------- pos : array_like, int, shape (n_variants,) Variant positions (physical distance). map_pos : array_like, float, shape (n_variants,) Variant positions (genetic map distance). gap_scale :...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L255-L322
1,085
cggh/scikit-allel
allel/stats/selection.py
xpnsl
def xpnsl(h1, h2, use_threads=True): """Cross-population version of the NSL statistic. Parameters ---------- h1 : array_like, int, shape (n_variants, n_haplotypes) Haplotype array for the first population. h2 : array_like, int, shape (n_variants, n_haplotypes) Haplotype array for th...
python
def xpnsl(h1, h2, use_threads=True): # check inputs h1 = asarray_ndim(h1, 2) check_integer_dtype(h1) h2 = asarray_ndim(h2, 2) check_integer_dtype(h2) check_dim0_aligned(h1, h2) h1 = memoryview_safe(h1) h2 = memoryview_safe(h2) if use_threads and multiprocessing.cpu_count() > 1: ...
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Cross-population version of the NSL statistic. Parameters ---------- h1 : array_like, int, shape (n_variants, n_haplotypes) Haplotype array for the first population. h2 : array_like, int, shape (n_variants, n_haplotypes) Haplotype array for the second population. use_threads : bool,...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L661-L736
1,086
cggh/scikit-allel
allel/stats/selection.py
haplotype_diversity
def haplotype_diversity(h): """Estimate haplotype diversity. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. Returns ------- hd : float Haplotype diversity. """ # check inputs h = HaplotypeArray(h, copy=False) ...
python
def haplotype_diversity(h): # check inputs h = HaplotypeArray(h, copy=False) # number of haplotypes n = h.n_haplotypes # compute haplotype frequencies f = h.distinct_frequencies() # estimate haplotype diversity hd = (1 - np.sum(f**2)) * n / (n - 1) return hd
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Estimate haplotype diversity. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. Returns ------- hd : float Haplotype diversity.
[ "Estimate", "haplotype", "diversity", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L739-L766
1,087
cggh/scikit-allel
allel/stats/selection.py
moving_haplotype_diversity
def moving_haplotype_diversity(h, size, start=0, stop=None, step=None): """Estimate haplotype diversity in moving windows. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. size : int The window size (number of variants). start : int, o...
python
def moving_haplotype_diversity(h, size, start=0, stop=None, step=None): hd = moving_statistic(values=h, statistic=haplotype_diversity, size=size, start=start, stop=stop, step=step) return hd
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Estimate haplotype diversity in moving windows. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. size : int The window size (number of variants). start : int, optional The index at which to start. stop : int, optional T...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L769-L795
1,088
cggh/scikit-allel
allel/stats/selection.py
plot_haplotype_frequencies
def plot_haplotype_frequencies(h, palette='Paired', singleton_color='w', ax=None): """Plot haplotype frequencies. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. palette : string, optional A Seaborn palette ...
python
def plot_haplotype_frequencies(h, palette='Paired', singleton_color='w', ax=None): import matplotlib.pyplot as plt import seaborn as sns # check inputs h = HaplotypeArray(h, copy=False) # setup figure if ax is None: width = plt.rcParams['figure.figsize'][...
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Plot haplotype frequencies. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. palette : string, optional A Seaborn palette name. singleton_color : string, optional Color to paint singleton haplotypes. ax : axes, optional ...
[ "Plot", "haplotype", "frequencies", "." ]
3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L888-L945
1,089
cggh/scikit-allel
allel/stats/selection.py
moving_hfs_rank
def moving_hfs_rank(h, size, start=0, stop=None): """Helper function for plotting haplotype frequencies in moving windows. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. size : int The window size (number of variants). start : int, o...
python
def moving_hfs_rank(h, size, start=0, stop=None): # determine windows windows = np.asarray(list(index_windows(h, size=size, start=start, stop=stop, step=None))) # setup output hr = np.zeros((windows.shape[0], h.shape[1]), dtype='i4') # iterate over windo...
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Helper function for plotting haplotype frequencies in moving windows. Parameters ---------- h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. size : int The window size (number of variants). start : int, optional The index at which to start. stop : i...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L948-L996
1,090
cggh/scikit-allel
allel/stats/selection.py
plot_moving_haplotype_frequencies
def plot_moving_haplotype_frequencies(pos, h, size, start=0, stop=None, n=None, palette='Paired', singleton_color='w', ax=None): """Plot haplotype frequencies in moving windows over the genome. Parameters ---------- pos : array...
python
def plot_moving_haplotype_frequencies(pos, h, size, start=0, stop=None, n=None, palette='Paired', singleton_color='w', ax=None): import matplotlib as mpl import matplotlib.pyplot as plt import seaborn as sns # setup figure ...
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Plot haplotype frequencies in moving windows over the genome. Parameters ---------- pos : array_like, int, shape (n_items,) Variant positions, using 1-based coordinates, in ascending order. h : array_like, int, shape (n_variants, n_haplotypes) Haplotype array. size : int The...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L999-L1070
1,091
cggh/scikit-allel
allel/stats/selection.py
moving_delta_tajima_d
def moving_delta_tajima_d(ac1, ac2, size, start=0, stop=None, step=None): """Compute the difference in Tajima's D between two populations in moving windows. Parameters ---------- ac1 : array_like, int, shape (n_variants, n_alleles) Allele counts array for the first population. ac2 : arr...
python
def moving_delta_tajima_d(ac1, ac2, size, start=0, stop=None, step=None): d1 = moving_tajima_d(ac1, size=size, start=start, stop=stop, step=step) d2 = moving_tajima_d(ac2, size=size, start=start, stop=stop, step=step) delta = d1 - d2 delta_z = (delta - np.mean(delta)) / np.std(delta) return delta_z
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Compute the difference in Tajima's D between two populations in moving windows. Parameters ---------- ac1 : array_like, int, shape (n_variants, n_alleles) Allele counts array for the first population. ac2 : array_like, int, shape (n_variants, n_alleles) Allele counts array for the s...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L1073-L1108
1,092
cggh/scikit-allel
allel/stats/selection.py
make_similar_sized_bins
def make_similar_sized_bins(x, n): """Utility function to create a set of bins over the range of values in `x` such that each bin contains roughly the same number of values. Parameters ---------- x : array_like The values to be binned. n : int The number of bins to create. ...
python
def make_similar_sized_bins(x, n): # copy and sort the array y = np.array(x).flatten() y.sort() # setup bins bins = [y[0]] # determine step size step = len(y) // n # add bin edges for i in range(step, len(y), step): # get value at this index v = y[i] # on...
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Utility function to create a set of bins over the range of values in `x` such that each bin contains roughly the same number of values. Parameters ---------- x : array_like The values to be binned. n : int The number of bins to create. Returns ------- bins : ndarray ...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L1111-L1157
1,093
cggh/scikit-allel
allel/stats/selection.py
standardize
def standardize(score): """Centre and scale to unit variance.""" score = asarray_ndim(score, 1) return (score - np.nanmean(score)) / np.nanstd(score)
python
def standardize(score): score = asarray_ndim(score, 1) return (score - np.nanmean(score)) / np.nanstd(score)
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Centre and scale to unit variance.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L1160-L1163
1,094
cggh/scikit-allel
allel/stats/selection.py
standardize_by_allele_count
def standardize_by_allele_count(score, aac, bins=None, n_bins=None, diagnostics=True): """Standardize `score` within allele frequency bins. Parameters ---------- score : array_like, float The score to be standardized, e.g., IHS or NSL. aac : array_like, int ...
python
def standardize_by_allele_count(score, aac, bins=None, n_bins=None, diagnostics=True): from scipy.stats import binned_statistic # check inputs score = asarray_ndim(score, 1) aac = asarray_ndim(aac, 1) check_dim0_aligned(score, aac) # remove nans nonan = ~np....
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Standardize `score` within allele frequency bins. Parameters ---------- score : array_like, float The score to be standardized, e.g., IHS or NSL. aac : array_like, int An array of alternate allele counts. bins : array_like, int, optional Allele count bins, overrides `n_bins`...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/selection.py#L1166-L1260
1,095
cggh/scikit-allel
allel/stats/window.py
moving_statistic
def moving_statistic(values, statistic, size, start=0, stop=None, step=None, **kwargs): """Calculate a statistic in a moving window over `values`. Parameters ---------- values : array_like The data to summarise. statistic : function The statistic to compute within each window. ...
python
def moving_statistic(values, statistic, size, start=0, stop=None, step=None, **kwargs): windows = index_windows(values, size, start, stop, step) # setup output out = np.array([statistic(values[i:j], **kwargs) for i, j in windows]) return out
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Calculate a statistic in a moving window over `values`. Parameters ---------- values : array_like The data to summarise. statistic : function The statistic to compute within each window. size : int The window size (number of values). start : int, optional The in...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/window.py#L12-L57
1,096
cggh/scikit-allel
allel/stats/window.py
window_locations
def window_locations(pos, windows): """Locate indices in `pos` corresponding to the start and stop positions of `windows`. """ start_locs = np.searchsorted(pos, windows[:, 0]) stop_locs = np.searchsorted(pos, windows[:, 1], side='right') locs = np.column_stack((start_locs, stop_locs)) retur...
python
def window_locations(pos, windows): start_locs = np.searchsorted(pos, windows[:, 0]) stop_locs = np.searchsorted(pos, windows[:, 1], side='right') locs = np.column_stack((start_locs, stop_locs)) return locs
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Locate indices in `pos` corresponding to the start and stop positions of `windows`.
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/window.py#L135-L143
1,097
cggh/scikit-allel
allel/stats/window.py
per_base
def per_base(x, windows, is_accessible=None, fill=np.nan): """Calculate the per-base value of a windowed statistic. Parameters ---------- x : array_like, shape (n_windows,) The statistic to average per-base. windows : array_like, int, shape (n_windows, 2) The windows used, as an ar...
python
def per_base(x, windows, is_accessible=None, fill=np.nan): # calculate window sizes if is_accessible is None: # N.B., window stops are included n_bases = np.diff(windows, axis=1).reshape(-1) + 1 else: n_bases = np.array([np.count_nonzero(is_accessible[i-1:j]) ...
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Calculate the per-base value of a windowed statistic. Parameters ---------- x : array_like, shape (n_windows,) The statistic to average per-base. windows : array_like, int, shape (n_windows, 2) The windows used, as an array of (window_start, window_stop) positions using 1-based...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/window.py#L379-L431
1,098
cggh/scikit-allel
allel/stats/window.py
equally_accessible_windows
def equally_accessible_windows(is_accessible, size, start=0, stop=None, step=None): """Create windows each containing the same number of accessible bases. Parameters ---------- is_accessible : array_like, bool, shape (n_bases,) Array defining accessible status of all bases on a contig/chromosom...
python
def equally_accessible_windows(is_accessible, size, start=0, stop=None, step=None): pos_accessible, = np.nonzero(is_accessible) pos_accessible += 1 # convert to 1-based coordinates # N.B., need some care in handling start and stop positions, these are # genomic positions at which to start and stop the...
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Create windows each containing the same number of accessible bases. Parameters ---------- is_accessible : array_like, bool, shape (n_bases,) Array defining accessible status of all bases on a contig/chromosome. size : int Window size (number of accessible bases). start : int, option...
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3c979a57a100240ba959dd13f98839349530f215
https://github.com/cggh/scikit-allel/blob/3c979a57a100240ba959dd13f98839349530f215/allel/stats/window.py#L434-L472
1,099
bartTC/django-attachments
attachments/templatetags/attachments_tags.py
attachment_form
def attachment_form(context, obj): """ Renders a "upload attachment" form. The user must own ``attachments.add_attachment permission`` to add attachments. """ if context['user'].has_perm('attachments.add_attachment'): return { 'form': AttachmentForm(), 'form_url'...
python
def attachment_form(context, obj): if context['user'].has_perm('attachments.add_attachment'): return { 'form': AttachmentForm(), 'form_url': add_url_for_obj(obj), 'next': context.request.build_absolute_uri(), } else: return {'form': None}
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Renders a "upload attachment" form. The user must own ``attachments.add_attachment permission`` to add attachments.
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012b7168f9342e07683a54ceab57696e0072962e
https://github.com/bartTC/django-attachments/blob/012b7168f9342e07683a54ceab57696e0072962e/attachments/templatetags/attachments_tags.py#L12-L26