File size: 4,622 Bytes
75b0af9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | % subsref() - index eegdata class
%
% Author: Arnaud Delorme, SCCN, INC, UCSD, Nov. 2008
% Copyright (C) 2008 Arnaud Delorme, SCCN, INC, UCSD
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software
% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
function b = subsref(a,s)
if s(1).type == '.'
b = builtin('subsref', struct(a), s); return;
end;
subs = s(1).subs;
finaldim = cellfun('length', subs);
% one dimension input
% -------------------
if length(s(1).subs) == 1
if isstr(subs{1})
subs{1} = [1:size(a,1)];
subs{2} = [1:size(a,2)];
if ndims(a) == 3, subs{3} = [1:size(a,3)]; end;
finaldim = prod(size(a));
end;
% two dimension input
% -------------------
elseif length(s(1).subs) == 2
if isstr(subs{1}), subs{1} = [1:size(a,1)]; end;
if isstr(subs{2}),
subs{2} = [1:size(a,2)];
if ndims(a) == 3, subs{3} = [1:size(a,3)]; end;
end;
if length(subs) == 3
finaldim = [ length(subs{1}) length(subs{2})*length(subs{3}) ];
else finaldim = [ length(subs{1}) length(subs{2}) ];
end;
% three dimension input
% ---------------------
elseif length(s(1).subs) == 3
if isstr(subs{1}), subs{1} = [1:size(a,1)]; end;
if isstr(subs{2}), subs{2} = [1:size(a,2)]; end;
if ndims(a) == 2,
subs(3) = [];
else
if isstr(subs{3}), subs{3} = [1:size(a,3)]; end;
end;
finaldim = cellfun('length', subs);
end;
% non-transposed data
% -------------------
if ~strcmpi(a.fileformat, 'transposed')
if length(subs) == 1, b = a.data.data.x(subs{1}); end;
if length(subs) == 2, b = a.data.data.x(subs{1}, subs{2}); end;
if length(subs) == 3, b = a.data.data.x(subs{1}, subs{2}, subs{3}); end;
else
if ndims(a) == 2
%if length(s) == 0, b = transpose(a.data.data.x); return; end;
if length(s(1).subs) == 1, b = a.data.data.x(s(1).subs{1})'; end;
if length(s(1).subs) == 2, b = a.data.data.x(s(1).subs{2}, s(1).subs{1})'; end;
if length(s(1).subs) == 3, b = a.data.data.x(s(1).subs{2}, s(1).subs{1})'; end;
else
%if length(s) == 0, b = permute(a.data.data.x, [3 1 2]); return; end;
if length(subs) == 1,
inds1 = mod(subs{1}-1, size(a,1))+1;
inds2 = mod((subs{1}-inds1)/size(a,1), size(a,2))+1;
inds3 = ((subs{1}-inds1)/size(a,1)-inds2+1)/size(a,2)+1;
inds = (inds1-1)*size(a,2)*size(a,3) + (inds3-1)*size(a,2) + inds2;
b = a.data.data.x(inds);
else
if length(subs) < 2, subs{3} = 1; end;
% repmat if several indices in different dimensions
% -------------------------------------------------
len = cellfun('length', subs);
subs{1} = repmat(reshape(subs{1}, [len(1) 1 1]), [1 len(2) len(3)]);
subs{2} = repmat(reshape(subs{2}, [1 len(2) 1]), [len(1) 1 len(3)]);
subs{3} = repmat(reshape(subs{3}, [1 1 len(3)]), [len(1) len(2) 1]);
inds = (subs{1}-1)*a.data.Format{2}(1)*a.data.Format{2}(2) + (subs{3}-1)*a.data.Format{2}(1) + subs{2};
inds = reshape(inds, [1 prod(size(inds))]);
b = a.data.data.x(inds);
end;
end;
end;
if length(finaldim) == 1, finaldim(2) = 1; end;
b = reshape(b, finaldim);
% 2 dims
%inds1 = mod(myinds-1, size(a,1))+1;
%inds2 = (myinds-inds1)/size(a,1)+1;
%inds = (inds2-1)*size(a,1) + inds1;
% 3 dims
%inds1 = mod(myinds-1, size(a,1))+1;
%inds2 = mod((myinds-inds1)/size(a,1), size(a,2))+1;
%inds3 = ((myinds-inds1)/size(a,1)-inds2)/size(a,2)+1;
%inds = (inds3-1)*size(a,1)*size(a,2) + inds2*size(a,1) + inds1;
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