Divide/spl​it/reshape​/convert a 1x6 cell array with different sizes cell arrays to a 19x1 cell array

Hi

I have a 1x6 cell that is:

    Columns 1 through 6
        [2x1195 double]    [4x1195 double]    [2x1195 double]    [4x752 double]    [4x694 double]  [3x695 double]

and I need to convert it to a 19x1 cell that is:

 [1x1195 double]
 [1x1195 double]      
 [1x1195 double]
 [1x1195 double]
 [1x1195 double]
 [1x1195 double]
 [1x1195 double]
 [1x1195 double]    
 [1x752 double] 
 [1x752 double] 
 [1x752 double] 
 [1x752 double]    
 [1x694 double]
 [1x694 double]
 [1x694 double]
 [1x694 double]  
 [1x695 double]
 [1x695 double]
 [1x695 double]

Meaning each row of a "inner" cell becomes the row of the "outer" cell. The first two rows are the 2 rows of Column 1, and so on.

I have already tried the function reshape, cell2mat, mat2cell, cat, but I haven't been able to make it work.

Thank you

Answer 1

[Jan]

C = ... % Your input
D = cell(size(C))
for k = 1:numel(C)
  D{k} = num2cell(C{k}, 2);    % [EDITED, {k} added]
end
Result = cat(1, D{:});

[ErikaZ]

It didn't quite work. I think the for loop doesn't have the correct brackets {},() for D. As is, D is only a 3x1 cell with 3 rows of 1x695, meaning it only contains the data for Column 6 of the original 1x6 cell. Instead of 1x6 cell with each column:

Columns 1 through 6

 [1x1195 double] [1x1195 double] [1x1195 double] [1x752 double] [1x694 double]  [1x695 double]
 [1x1195 double] [1x1195 double] [1x1195 double] [1x752 double] [1x694 double]  [1x695 double]
                 [1x1195 double]                 [1x752 double] [1x694 double]  [1x695 double]
                 [1x1195 double]                 [1x752 double] [1x694 double]

Also, the Result didn't work because it created a 3x695 double array instead of a 19x1 cell. For the code you sent, D looks more like what I need for the result but for the total 19 rows.

[ErikaZ]

I got it to work as:

C = my cell;
D = cell(size(C));
for k = 1:numel(C)
  D{1,k} = num2cell(C{k}, 2);
end
Result = cat(1, D{:});

Thanks

[Guillaume]

Possibly a cleaner version of the above:

D = cellfun(@(c) num2cell(c, 2), C, 'UniformOutput', false);
Result = vertcat(D{:});