How to combine the elements of several identical cell structure ?

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Salaijobhaka 2016-10-3

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评论： Salaijobhaka 2016-10-4

I have 100 .mat files each containing a cell structure "Tau" with components "Tau.n" and "Tau.u", each component is an array of size 1000*5*11.

I would like to combine the data from all these .mat files such that we could generate one .mat file that now has a cell structure "Tau" with components "Tau.n" and "Tau.u" of size 100000*5*11

What would be the easiest way to do this ? For eaxample I have attached four .mat files. In this case the cell components "Tau.u" and "Tau.n" each becomes an array of size 4000*5*11.

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Joe Yeh 2016-10-3

The data contained in the mat file does not match your description. Can you update either your question or the mat files ?

Salaijobhaka 2016-10-3

Thank you for the response. I have updated the question now !!

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Answer 1

Joe Yeh 2016-10-3

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编辑：Joe Yeh 2016-10-3

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Ok. Here's a solution for you :

Tau = struct;
for ii = 0:9
  data = load(['Tau@09_n1000_c', num2str(ii), '.mat']);
  if ii == 0
     Tau.u = data.Tau.u;
     Tau.n = data.Tau.n;
  else
     Tau.u = cat(4, data.Tau.u);
     Tau.v = cat(4, data.Tau.n);
  end
end
save('Tau_concatenated.mat')

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Salaijobhaka 2016-10-4

It worked. Thank you for the solution.

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Answer 2

Guillaume 2016-10-3

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在 MATLAB Online 中打开

Note: there is no cell array in your mat files, just a scalar structure.

Here is how I'd solved your problem:

srcdir = 'C:\somewhere\where\mat\files\are'
mfiles = dir(fullfile(srcdir, 'tau*.mat'));
mfiles = {mfiles.name};
mfilecontent = cellfun(@(fname) load(fullfile(srcdir, fname)), mfiles, 'UniformOutput', false);
temptau = [mfilecontent{:}];  %convert cell array into structure with field Tau
temptau = temptau.Tau;        %convert structure of structures into a 1x100 structure
Tau.u = vertcat(temptau.u);   %concatenate u field
Tau.v = vertcat(temptau.v);   %concatenate v field