comparison toolboxes/FullBNT-1.0.7/KPMtools/cell2num.m @ 0:e9a9cd732c1e tip

first hg version after svn

+function N = cell2num(C)
+% CELL2NUM Convert a 2D cell array to a 2D numeric array 
+% N = cell2num(C)
+% If the cells contain column vectors, they must have the same number of rows in each row of C.
+% Each column will be concatenated.
+%
+% Example 1:
+% C = num2cell(rand(2,2))
+%    [0.4565]    [0.8214]
+%    [0.0185]    [0.4447]
+% N = cell2num(C)
+%     0.4565    0.8214
+%     0.0185    0.4447
+%
+% Example 2:
+% C = cell(2, 3);
+% for i=1:2
+%   for j=1:3
+%     C{i,j} = rand(i, 1);
+%   end
+% end
+% C = 
+%     [    0.8998]    [    0.8216]    [    0.6449]
+%     [2x1 double]    [2x1 double]    [2x1 double]
+% C{2,1} = 
+%     0.8180
+%     0.6602
+% N=cell2num(C)
+%     0.8998    0.8216    0.6449
+%     0.8180    0.3420    0.3412
+%     0.6602    0.2897    0.5341
+
+
+%  error('use cell2mat in matlab 7')
+
+
+if isempty(C)
+  N = [];
+  return;
+end
+
+if any(cellfun('isempty', C)) %any(isemptycell(C))
+  error('can''t convert cell array with empty cells to matrix')
+end
+
+[nrows ncols] = size(C);
+%N = reshape(cat(1, C{:}), [nrows ncols]); % this only works if C only contains scalars
+r = 0;
+for i=1:nrows
+  r = r + size(C{i,1}, 1);
+end
+c = 0;
+for j=1:ncols
+  c = c + size(C{1,j}, 2);
+end
+N = reshape(cat(1, C{:}), [r c]);
+