How to edit MATLAB file kmeans.m?

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hello_world on 8 Aug 2016
Edited: Stephen23 on 9 Aug 2016
Hello Friends,
I want to edit kmeans.m but it does not allow me to make any changes. I tried 'fileattrib' to make it writable file by
fileattrib('kmeans.m', '+w');
but even this does not work. I also tried to give the full path as follows:
Error using fileattrib
Operation not permitted
I will appreciate any advise.
  1 Comment
Stephen23 on 9 Aug 2016
Edited: Stephen23 on 9 Aug 2016
Do NOT edit or change any MATLAB toolbox files.
This has two very significant risks:
  1. introducing bugs, which then cannot be reverted because you have changed the original file and you no longer have an original version.
  2. changing function behavior and outputs: other functions may depend on the one that you edit. Will they still work correctly ? How do you know ?
If you want to write some code based on a MATLAB toolbox file, always copy it to your user directory and work with that copy only. Never replace the original files.

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Answers (1)

the cyclist
the cyclist on 8 Aug 2016
I would strongly advise against directly editing a read-only MATLAB file.
Instead copy it to your own directory, and edit your own file ...
copyfile /Applications/ ./my_kmeans.m
It will still be read-only, but after make changes and try to save, you will be given an option to overwrite.
Adam on 9 Aug 2016
You would have to copy them in that case. Matlab toolbox files are not meant to be messed around with and edited.

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