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def to_json_str(self):
"""Convert data to json string representation.
Returns:
json representation as string.
"""
adict = dict(vars(self), sort_keys=True)
adict['type'] = self.__class__.__name__
return json.dumps(adict) |
def find_file_match(folder_path, regex=''):
"""
Returns absolute paths of files that match the regex within folder_path and
all its children folders.
Note: The regex matching is done using the match function
of the re module.
Parameters
----------
folder_path: string
regex: string... |
def qquery(xml_thing, xpath_thing, vars=None, funcs=None):
'''
Quick query. Convenience for using the MicroXPath engine.
Give it some XML and an expression and it will yield the results. No fuss.
xml_thing - bytes or string, or amara3.xml.tree node
xpath_thing - string or parsed XPath expressio... |
def p_function_call(p):
"""
FunctionCall : NAME FormalArguments
"""
#Hacking around the ambiguity between node type test & function call
if p[1] in ('node', 'text'):
p[0] = ast.NodeType(p[1])
else:
p[0] = ast.FunctionCall(p[1], p[2]) |
def boolean_arg(ctx, obj):
'''
Handles LiteralObjects as well as computable arguments
'''
if hasattr(obj, 'compute'):
obj = next(obj.compute(ctx), False)
return to_boolean(obj) |
def number_arg(ctx, obj):
'''
Handles LiteralObjects as well as computable arguments
'''
if hasattr(obj, 'compute'):
obj = next(obj.compute(ctx), False)
return to_number(obj) |
def string_arg(ctx, obj):
'''
Handles LiteralObjects as well as computable arguments
'''
if hasattr(obj, 'compute'):
obj = next(obj.compute(ctx), False)
return to_string(obj) |
def name(ctx, obj=None):
'''
Yields one string a node name or the empty string, operating on the first item in the provided obj, or the current item if obj is omitted
If this item is a node, yield its node name (generic identifier), otherwise yield ''
If obj is provided, but empty, yield ''
'''
... |
def string_(ctx, seq=None):
'''
Yields one string, derived from the argument literal (or the first item in the argument sequence, unless empty in which case yield '') as follows:
* If a node, yield its string-value
* If NaN, yield 'NaN'
* If +0 or -0, yield '0'
* If positive infinity, yield 'In... |
def concat(ctx, *strings):
'''
Yields one string, concatenation of argument strings
'''
strings = flatten([ (s.compute(ctx) if callable(s) else s) for s in strings ])
strings = (next(string_arg(ctx, s), '') for s in strings)
#assert(all(map(lambda x: isinstance(x, str), strings)))
#FIXME: Ch... |
def starts_with(ctx, full, part):
'''
Yields one boolean, whether the first string starts with the second
'''
full = next(string_arg(ctx, full), '')
part = next(string_arg(ctx, part), '')
yield full.startswith(part) |
def contains(ctx, full, part):
'''
Yields one boolean, whether the first string contains the second
'''
full = next(string_arg(ctx, full), '')
part = next(string_arg(ctx, part), '')
yield part in full |
def substring_before(ctx, full, part):
'''
Yields one string
'''
full = next(string_arg(ctx, full), '')
part = next(string_arg(ctx, part), '')
yield full.partition(part)[0] |
def substring_after(ctx, full, part):
'''
Yields one string
'''
full = next(string_arg(ctx, full), '')
part = next(string_arg(ctx, part), '')
yield full.partition(part)[-1] |
def substring(ctx, full, start, length):
'''
Yields one string
'''
full = next(string_arg(ctx, full), '')
start = int(next(to_number(start)))
length = int(next(to_number(length)))
yield full[start-1:start-1+length] |
def string_length(ctx, s=None):
'''
Yields one number
'''
if s is None:
s = ctx.node
elif callable(s):
s = next(s.compute(ctx), '')
yield len(s) |
def boolean(ctx, obj):
'''
Yields one boolean, false if the argument sequence is empty, otherwise
* false if the first item is a boolean and false
* false if the first item is a number and positive or negative zero or NaN
* false if the first item is a string and ''
* true in all other cases
... |
def number(ctx, seq=None):
'''
Yields one float, derived from the first item in the argument sequence (unless empty in which case yield NaN) as follows:
* If string with optional whitespace followed by an optional minus sign followed by a Number followed by whitespace, converte to the IEEE 754 number that ... |
def foreach_(ctx, seq, expr):
'''
Yields the result of applying an expression to each item in the input sequence.
* seq: input sequence
* expr: expression to be converted to string, then dynamically evaluated for each item on the sequence to produce the result
'''
from . import context, parse a... |
def lookup_(ctx, tableid, key):
'''
Yields a sequence of a single value, the result of looking up a value from the tables provided in the context, or an empty sequence if lookup is unsuccessful
* tableid: id of the lookup table to use
* expr: expression to be converted to string, then dynamically evalu... |
def replace_chars_for_svg_code(svg_content):
""" Replace known special characters to SVG code.
Parameters
----------
svg_content: str
Returns
-------
corrected_svg: str
Corrected SVG content
"""
result = svg_content
svg_char = [
('&', '&'),
('>', '&g... |
def _check_svg_file(svg_file):
""" Try to read a SVG file if `svg_file` is a string.
Raise an exception in case of error or return the svg object.
If `svg_file` is a svgutils svg object, will just return it.
Parameters
----------
svg_file: str or svgutils.transform.SVGFigure object
If ... |
def merge_svg_files(svg_file1, svg_file2, x_coord, y_coord, scale=1):
""" Merge `svg_file2` in `svg_file1` in the given positions `x_coord`, `y_coord` and `scale`.
Parameters
----------
svg_file1: str or svgutils svg document object
Path to a '.svg' file.
svg_file2: str or svgutils svg doc... |
def rsvg_export(input_file, output_file, dpi=90, rsvg_binpath=None):
""" Calls the `rsvg-convert` command, to convert a svg to a PDF (with unicode).
Parameters
----------
rsvg_binpath: str
Path to `rsvg-convert` command
input_file: str
Path to the input file
output_file: str
... |
def merge_pdfs(pdf_filepaths, out_filepath):
""" Merge all the PDF files in `pdf_filepaths` in a new PDF file `out_filepath`.
Parameters
----------
pdf_filepaths: list of str
Paths to PDF files.
out_filepath: str
Path to the result PDF file.
Returns
-------
path: str
... |
def _embed_font_to_svg(filepath, font_files):
""" Return the ElementTree of the SVG content in `filepath`
with the font content embedded.
"""
with open(filepath, 'r') as svgf:
tree = etree.parse(svgf)
if not font_files:
return tree
fontfaces = FontFaceGroup()
for font_file ... |
def embed_font_to_svg(filepath, outfile, font_files):
""" Write ttf and otf font content from `font_files`
in the svg file in `filepath` and write the result in
`outfile`.
Parameters
----------
filepath: str
The SVG file whose content must be modified.
outfile: str
The file... |
def _check_inputs(self):
''' make some basic checks on the inputs to make sure they are valid'''
try:
_ = self._inputs[0]
except TypeError:
raise RuntimeError(
"inputs should be iterable but found type='{0}', value="
"'{1}'".format(type(sel... |
def _check_function(self):
''' make some basic checks on the function to make sure it is valid'''
# note, callable is valid for Python 2 and Python 3.2 onwards but
# not inbetween
if not callable(self._function):
raise RuntimeError(
"provided function '{0}' is... |
def _recurse(self, inputs, output):
'''internal recursion routine called by the run method that generates
all input combinations'''
if inputs:
my_input = inputs[0]
name = my_input.name
if my_input.state:
my_options = my_input.options(self.state... |
def create_input(option, template_name, template_location="template"):
'''create an input file using jinja2 by filling a template
with the values from the option variable passed in.'''
# restructure option list into jinja2 input format
jinja2_input = {}
for item in option:
try:
... |
def _recurse(self, inputs, output, depth, max_depth):
'''We work out all combinations using this internal recursion method'''
if depth < max_depth:
for index, option in enumerate(inputs):
my_output = list(output)
my_output.append(option)
self._... |
def to_string(obj):
'''
Cast an arbitrary object or sequence to a string type
'''
if isinstance(obj, LiteralWrapper):
val = obj.obj
elif isinstance(obj, Iterable) and not isinstance(obj, str):
val = next(obj, None)
else:
val = obj
if val is None:
yield ''
... |
def to_number(obj):
'''
Cast an arbitrary object or sequence to a number type
'''
if isinstance(obj, LiteralWrapper):
val = obj.obj
elif isinstance(obj, Iterable) and not isinstance(obj, str):
val = next(obj, None)
else:
val = obj
if val is None:
#FIXME: Shoul... |
def to_boolean(obj):
'''
Cast an arbitrary sequence to a boolean type
'''
#if hasattr(obj, '__iter__'):
if isinstance(obj, LiteralWrapper):
val = obj.obj
elif isinstance(obj, Iterable) and not isinstance(obj, str):
val = next(obj, None)
else:
val = obj
if val is N... |
def _serialize(xp_ast):
'''Generate token strings which, when joined together, form a valid
XPath serialization of the AST.'''
if hasattr(xp_ast, '_serialize'):
for tok in xp_ast._serialize():
yield(tok)
elif isinstance(xp_ast, str):
yield(repr(xp_ast)) |
def change_xml_encoding(filepath, src_enc, dst_enc='utf-8'):
""" Modify the encoding entry in the XML file.
Parameters
----------
filepath: str
Path to the file to be modified.
src_enc: str
Encoding that is written in the file
dst_enc: str
Encoding to be set in the fil... |
def save_into_qrcode(text, out_filepath, color='', box_size=10, pixel_size=1850):
""" Save `text` in a qrcode svg image file.
Parameters
----------
text: str
The string to be codified in the QR image.
out_filepath: str
Path to the output file
color: str
A RGB color exp... |
def _qrcode_to_file(qrcode, out_filepath):
""" Save a `qrcode` object into `out_filepath`.
Parameters
----------
qrcode: qrcode object
out_filepath: str
Path to the output file.
"""
try:
qrcode.save(out_filepath)
except Exception as exc:
raise IOError('Error tryi... |
def handle_cdata(pos, window, charpat, stopchars):
'''
Return (result, new_position) tuple.
Result is cdata string if possible and None if more input is needed
Or of course bad syntax can raise a RuntimeError
'''
cdata = ''
cursor = start = pos
try:
while True:
while... |
def launch(option):
'''Set the gromacs input data using the supplied input options, run
gromacs and extract and return the required outputs.'''
from melody.inputs import create_input
_ = create_input(option, template_name="input.mdp")
# save the input file in the appropriate place and launch groma... |
def call_command(cmd_name, args_strings):
"""Call CLI command with arguments and returns its return value.
Parameters
----------
cmd_name: str
Command name or full path to the binary file.
arg_strings: str
Argument strings list.
Returns
-------
return_value
Com... |
def getCSV(self):
"""
Returns
-------
filename: str
"""
import getpass
import gspread
user = raw_input("Insert Google username:")
password = getpass.getpass(prompt="Insert password:")
name = raw_input("SpreadSheet filename on Drive:")
... |
def write(elem, a_writer):
'''
Write a MicroXML element node (yes, even one representign a whole document)
elem - Amara MicroXML element node to be written out
writer - instance of amara3.uxml.writer to implement the writing process
'''
a_writer.start_element(elem.xml_name, attribs=elem.xml_attr... |
def tex2pdf(tex_file, output_file=None, output_format='pdf'):
""" Call PDFLatex to convert TeX files to PDF.
Parameters
----------
tex_file: str
Path to the input LateX file.
output_file: str
Path to the output PDF file.
If None, will use the same output directory as the te... |
def options(self, my_psy):
'''Returns all potential loop fusion options for the psy object
provided'''
# compute options dynamically here as they may depend on previous
# changes to the psy tree
my_options = []
invokes = my_psy.invokes.invoke_list
#print "there ar... |
def transform(geom, to_sref):
"""Returns a transformed Geometry.
Arguments:
geom -- any coercible Geometry value or Envelope
to_sref -- SpatialReference or EPSG ID as int
"""
# If we have an envelope, assume it's in the target sref.
try:
geom = getattr(geom, 'polygon', Envelope(geom... |
def Geometry(*args, **kwargs):
"""Returns an ogr.Geometry instance optionally created from a geojson str
or dict. The spatial reference may also be provided.
"""
# Look for geojson as a positional or keyword arg.
arg = kwargs.pop('geojson', None) or len(args) and args[0]
try:
srs = kwarg... |
def centroid(self):
"""Returns the envelope centroid as a (x, y) tuple."""
return self.min_x + self.width * 0.5, self.min_y + self.height * 0.5 |
def expand(self, other):
"""Expands this envelope by the given Envelope or tuple.
Arguments:
other -- Envelope, two-tuple, or four-tuple
"""
if len(other) == 2:
other += other
mid = len(other) // 2
self.ll = map(min, self.ll, other[:mid])
self... |
def intersect(self, other):
"""Returns the intersection of this and another Envelope."""
inter = Envelope(tuple(self))
if inter.intersects(other):
mid = len(other) // 2
inter.ll = map(max, inter.ll, other[:mid])
inter.ur = map(min, inter.ur, other[mid:])
... |
def intersects(self, other):
"""Returns true if this envelope intersects another.
Arguments:
other -- Envelope or tuple of (minX, minY, maxX, maxY)
"""
try:
return (self.min_x <= other.max_x and
self.max_x >= other.min_x and
se... |
def scale(self, xfactor, yfactor=None):
"""Returns a new envelope rescaled from center by the given factor(s).
Arguments:
xfactor -- int or float X scaling factor
yfactor -- int or float Y scaling factor
"""
yfactor = xfactor if yfactor is None else yfactor
x, y ... |
def polygon(self):
"""Returns an OGR Geometry for this envelope."""
ring = ogr.Geometry(ogr.wkbLinearRing)
for coord in self.ll, self.lr, self.ur, self.ul, self.ll:
ring.AddPoint_2D(*coord)
polyg = ogr.Geometry(ogr.wkbPolygon)
polyg.AddGeometryDirectly(ring)
r... |
def from_name(cls, name):
"Imports a mass table from a file"
filename = os.path.join(package_dir, 'data', name + '.txt')
return cls.from_file(filename, name) |
def from_file(cls, filename, name=''):
"Imports a mass table from a file"
df = pd.read_csv(filename, header=0, delim_whitespace=True, index_col=[0, 1])['M']
df.name = name
return cls(df=df, name=name) |
def from_ZNM(cls, Z, N, M, name=''):
"""
Creates a table from arrays Z, N and M
Example:
________
>>> Z = [82, 82, 83]
>>> N = [126, 127, 130]
>>> M = [-21.34, -18.0, -14.45]
>>> Table.from_ZNM(Z, N, M, name='Custom Table')
Z N
82 126 ... |
def to_file(self, path):
"""Export the contents to a file as comma separated values.
Parameters
----------
path : string
File path where the data should be saved to
Example
-------
Export the last ten elements of AME2012 to a new file:
>>> T... |
def select(self, condition, name=''):
"""
Selects nuclei according to a condition on Z,N or M
Parameters
----------
condition : function,
Can have one of the signatures f(M), f(Z,N) or f(Z, N, M)
must return a boolean value
name: string, optional ... |
def at(self, nuclei):
"""Return a selection of the Table at positions given by ``nuclei``
Parameters
----------
nuclei: list of tuples
A list where each element is tuple of the form (Z,N)
Example
-------
Return binding energies at magic nuclei:
... |
def intersection(self, table):
"""
Select nuclei which also belong to ``table``
Parameters
----------
table: Table, Table object
Example:
----------
Table('AME2003').intersection(Table('AME1995'))
"""
idx = self.df.index & table.df.index
... |
def not_in(self, table):
"""
Select nuclei not in table
Parameters
----------
table: Table, Table object from where nuclei should be removed
Example:
----------
Find the new nuclei in AME2003 with Z,N >= 8:
>>> Table('AME2003').not_in(Table('AME... |
def odd_odd(self):
"""Selects odd-odd nuclei from the table:
>>> Table('FRDM95').odd_odd
Out[13]:
Z N
9 9 1.21
11 0.10
13 3.08
15 9.32
...
"""
return self.select(lambda Z, N: (Z % 2) and (N % 2)... |
def odd_even(self):
"""
Selects odd-even nuclei from the table
"""
return self.select(lambda Z, N: (Z % 2) and not(N % 2), name=self.name) |
def even_odd(self):
"""
Selects even-odd nuclei from the table
"""
return self.select(lambda Z, N: not(Z % 2) and (N % 2), name=self.name) |
def even_even(self):
"""
Selects even-even nuclei from the table
"""
return self.select(lambda Z, N: not(Z % 2) and not(N % 2), name=self.name) |
def error(self, relative_to='AME2003'):
"""
Calculate error difference
Parameters
----------
relative_to : string,
a valid mass table name.
Example:
----------
>>> Table('DUZU').error(relative_to='AME2003')
"""
df = self.df - ... |
def rmse(self, relative_to='AME2003'):
"""Calculate root mean squared error
Parameters
----------
relative_to : string,
a valid mass table name.
Example:
----------
>>> template = '{0:10}|{1:^6.2f}|{2:^6.2f}|{3:^6.2f}'
>>> print 'Model '... |
def binding_energy(self):
"""
Return binding energies instead of mass excesses
"""
M_P = 938.2723
# MeV
M_E = 0.5110
# MeV
M_N = 939.5656
# MeV
AMU = 931.494028
# MeV
df = self.Z * (M_P + M_E) + (self.A - self.Z) * M_N - (se... |
def q_alpha(self):
"""Return Q_alpha"""
M_ALPHA = 2.4249156 # He4 mass excess in MeV
f = lambda parent, daugther: parent - daugther - M_ALPHA
return self.derived('Q_alpha', (-2, -2), f) |
def q_beta(self):
"""Return Q_beta"""
f = lambda parent, daugther: parent - daugther
return self.derived('Q_beta', (1, -1), f) |
def s2n(self):
"""Return 2 neutron separation energy"""
M_N = 8.0713171 # neutron mass excess in MeV
f = lambda parent, daugther: -parent + daugther + 2 * M_N
return self.derived('s2n', (0, -2), f) |
def s1n(self):
"""Return 1 neutron separation energy"""
M_N = 8.0713171 # neutron mass excess in MeV
f = lambda parent, daugther: -parent + daugther + M_N
return self.derived('s1n', (0, -1), f) |
def s2p(self):
"""Return 2 proton separation energy"""
M_P = 7.28897050 # proton mass excess in MeV
f = lambda parent, daugther: -parent + daugther + 2 * M_P
return self.derived('s2p', (-2, 0), f) |
def s1p(self):
"""Return 1 proton separation energy"""
M_P = 7.28897050 # proton mass excess in MeV
f = lambda parent, daugther: -parent + daugther + M_P
return self.derived('s1p', (-1, 0), f) |
def derived(self, name, relative_coords, formula):
"""Helper function for derived quantities"""
relZ, relN = relative_coords
daughter_idx = [(x[0] + relZ, x[1] + relN) for x in self.df.index]
values = formula(self.df.values, self.df.loc[daughter_idx].values)
return Table(df=pd.Se... |
def ds2n(self):
"""Calculates the derivative of the neutron separation energies:
ds2n(Z,A) = s2n(Z,A) - s2n(Z,A+2)
"""
idx = [(x[0] + 0, x[1] + 2) for x in self.df.index]
values = self.s2n.values - self.s2n.loc[idx].values
return Table(df=pd.Series(values, index=self.df.... |
def ds2p(self):
"""Calculates the derivative of the neutron separation energies:
ds2n(Z,A) = s2n(Z,A) - s2n(Z,A+2)
"""
idx = [(x[0] + 2, x[1]) for x in self.df.index]
values = self.s2p.values - self.s2p.loc[idx].values
return Table(df=pd.Series(values, index=self.df.inde... |
def chart_plot(self, ax=None, cmap='RdBu',
xlabel='N', ylabel='Z', grid_on=True, colorbar=True):
"""Plot a nuclear chart with (N,Z) as axis and the values
of the Table as a color scale
Parameters
----------
ax: optional matplotlib axes
defaults to ... |
def _uses_db(func, self, *args, **kwargs):
""" Use as a decorator for operations on the database, to ensure connection setup and
teardown. Can only be used on methods on objects with a `self.session` attribute.
"""
if not self.session:
_logger.debug('Creating new db session')
self._init_... |
def derive_key(self, master_password):
""" Computes the key from the salt and the master password. """
encoder = encoding.Encoder(self.charset)
bytes = ('%s:%s' % (master_password, self.name)).encode('utf8')
start_time = time.clock()
# we fix the scrypt parameters in case the d... |
def bootstrap(self, path_or_uri):
""" Initialize a database.
:param database_path: The absolute path to the database to initialize.
"""
_logger.debug("Bootstrapping new database: %s", path_or_uri)
self.database_uri = _urify_db(path_or_uri)
db = sa.create_engine(self.data... |
def search(self, query):
""" Search the database for the given query. Will find partial matches. """
results = self.session.query(Domain).filter(Domain.name.ilike('%%%s%%' % query)).all()
return results |
def get_domain(self, domain_name):
""" Get the :class:`Domain <pwm.Domain>` object from a name.
:param domain_name: The domain name to fetch the object for.
:returns: The :class:`Domain <pwm.core.Domain>` class with this domain_name if found, else
None.
"""
protocol ... |
def modify_domain(self, domain_name, new_salt=False, username=None):
""" Modify an existing domain.
:param domain_name: The name of the domain to modify.
:param new_salt: Whether to generate a new salt for the domain.
:param username: If given, change domain username to this value.
... |
def create_domain(self, domain_name, username=None, alphabet=Domain.DEFAULT_ALPHABET,
length=Domain.DEFAULT_KEY_LENGTH):
""" Create a new domain entry in the database.
:param username: The username to associate with this domain.
:param alphabet: A character set restriction to impose... |
def from_bbox(bbox, zlevs):
"""Yields tile (x, y, z) tuples for a bounding box and zoom levels.
Arguments:
bbox - bounding box as a 4-length sequence
zlevs - sequence of tile zoom levels
"""
env = Envelope(bbox)
for z in zlevs:
corners = [to_tile(*coord + (z,)) for coord in (env.ul,... |
def to_lonlat(xtile, ytile, zoom):
"""Returns a tuple of (longitude, latitude) from a map tile xyz coordinate.
See http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Lon..2Flat._to_tile_numbers_2
Arguments:
xtile - x tile location as int or float
ytile - y tile location as int or float
zo... |
def to_tile(lon, lat, zoom):
"""Returns a tuple of (xtile, ytile) from a (longitude, latitude) coordinate.
See http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
Arguments:
lon - longitude as int or float
lat - latitude as int or float
zoom - zoom level as int or float
"""
lat_rad... |
def extract_hbs(fileobj, keywords, comment_tags, options):
"""Extract messages from Handlebars templates.
It returns an iterator yielding tuples in the following form ``(lineno,
funcname, message, comments)``.
TODO: Things to improve:
--- Return comments
"""
server = get_pipeserver()
... |
def vsiprefix(path):
"""Returns a GDAL virtual filesystem prefixed path.
Arguments:
path -- file path as str
"""
vpath = path.lower()
scheme = VSI_SCHEMES.get(urlparse(vpath).scheme, '')
for ext in VSI_TYPES:
if ext in vpath:
filesys = VSI_TYPES[ext]
break
... |
def srid(self):
"""Returns the EPSG ID as int if it exists."""
epsg_id = (self.GetAuthorityCode('PROJCS') or
self.GetAuthorityCode('GEOGCS'))
try:
return int(epsg_id)
except TypeError:
return |
def main():
""" Main entry point for the CLI. """
args = get_args()
ret_code = args.target(args)
_logger.debug('Exiting with code %d', ret_code)
sys.exit(ret_code) |
def _init_logging(verbose=False):
""" Initialize loggers. """
config = {
'version': 1,
'formatters': {
'console': {
'format': '* %(message)s',
}
},
'handlers': {
'console': {
'class': 'logging.StreamHandler',
... |
def update_file(url, filename):
"""Update the content of a single file."""
resp = urlopen(url)
if resp.code != 200:
raise Exception('GET {} failed.'.format(url))
with open(_get_package_path(filename), 'w') as fp:
for l in resp:
if not l.startswith(b'#'):
fp.wr... |
def available_drivers():
"""Returns a dictionary of enabled GDAL Driver metadata keyed by the
'ShortName' attribute.
"""
drivers = {}
for i in range(gdal.GetDriverCount()):
d = gdal.GetDriver(i)
drivers[d.ShortName] = d.GetMetadata()
return drivers |
def driver_for_path(path, drivers=None):
"""Returns the gdal.Driver for a path or None based on the file extension.
Arguments:
path -- file path as str with a GDAL supported file extension
"""
ext = (os.path.splitext(path)[1][1:] or path).lower()
drivers = drivers or ImageDriver.registry if ext... |
def geom_to_array(geom, size, affine):
"""Converts an OGR polygon to a 2D NumPy array.
Arguments:
geom -- OGR Geometry
size -- array size in pixels as a tuple of (width, height)
affine -- AffineTransform
"""
driver = ImageDriver('MEM')
rast = driver.raster(driver.ShortName, size)
ra... |
def rasterize(layer, rast):
"""Returns a Raster from layer features.
Arguments:
layer -- Layer to rasterize
rast -- Raster with target affine, size, and sref
"""
driver = ImageDriver('MEM')
r2 = driver.raster(driver.ShortName, rast.size)
r2.affine = rast.affine
sref = rast.sref
... |
def open(path, mode=gdalconst.GA_ReadOnly):
"""Returns a Raster instance.
Arguments:
path -- local or remote path as str or file-like object
Keyword args:
mode -- gdal constant representing access mode
"""
path = getattr(path, 'name', path)
try:
return Raster(vsiprefix(path), mo... |
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