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How to change file extension to '.xlsx' BUT keep original files?

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NH on 22 Mar 2013
I am trying to change files with extension '.stp' to '.xlsx' while also keeping the original '.stp' files. I have code that replaces the '.stp' files with '.xlsx', but it does not keep the originals:
for i=1:length(files)
[pathstr, name, ext] = fileparts(filename);
movefile(filename, fullfile(pathstr, [name '.xlsx']))
Also, for some reason I am unable to open the resulting '.xlsx' files. However, when I write them to '.xls' they open with no problems. This is a problem because I need the files '.xlsx' format. If anyone knows how to solve this problem as well, it would be greatly appreciated.
I am running Matlab 2013a on a Mac.

Accepted Answer

Image Analyst
Image Analyst on 22 Mar 2013
Use copyfile() instead of movefile().
Image Analyst
Image Analyst on 22 Mar 2013
You'd need to read the data in with some kind of .stp file reader, into variables in MATLAB. Then write out those variables with xlswrite().

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