MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Discover what MATLAB® can do for your career.

Asked by Jeff on 2 May 2013

Hi!

I have a folder containing subfolders containing hdf5 files (10,000 of them in fact).

A example of a path would be 'data\A\F\G\TRATTGW128F427A82D.h5'.

Below 'data', there are 3 levels of folders, all named by a single letter. The final files all have similar names to TRATTGW128F427A82D.h5.

I have a function that converts hdf5 files to .mat. I want to upload all these files and store some of their info in a matrix.

Example:

hdf5_to_matfile('path\to\hdf5.h5','path\to\outputk.mat');
A(k,1)=matk.data1;
A(k,2)=matk.data2;


How can I loop over all my folders and subfolder to obtain this one single matrix A containing one line for each folder with data1 and data2 in each column? And what would be the fastest way to proceed?

Products

No products are associated with this question.

Answer by Walter Roberson on 2 May 2013

Answer by Jeff on 2 May 2013

Thank you! This link really helped. However I have one last problem. I can get all the .h5 in one single directory, however I want my program to go through all the lower directories as well. The beginning of my code is:

myFolder = 'D:\Documents\Subset\A\A\A\';
if ~isdir(myFolder)
errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
uiwait(warndlg(errorMessage));
return;
end
filePattern = fullfile(myFolder, '*.h5');


but I also want the files that are in 'D:\Documents\Subset\A\A\B\*.h5', 'D:\Documents\Subset\A\B\F\*.h5' or 'D:\Documents\Subset\B\G\D\*.h5' for example. In my case, there are 1352 combinations in total. I tried doing:

myFolder = 'D:\Documents\MillionSongSubset\';
if ~isdir(myFolder)
errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
uiwait(warndlg(errorMessage));
return;
end
filePattern = fullfile(myFolder, '*\*\*\*.h5');


but it did not work... Is there another trick I need to know here?