How to update compiled .mat file in standalone?

Hi, i have a gui standalone where i load and save data from/to a .mat file. Loading does work with fallowing code...

 load(defaultValues.mat)

but saving it with

 save(defaultValues.mat)

creats a new .mat file and does not update the original. How can i save to the original .mat file?

There are already some QUESTIONS about this topic put this answer does not work for me...

Answer 1

[Adam]

Use the full path when saving. Otherwise it will dump it in some odd location related to the install directory.

[sejo]

hi adam, thx for your answer. but as i want to pass my standalone to different users i dont now how to manage to have always the same folder on each user pc...

do you have an idea how to solve that?

[Titus Edelhofer]

Adam's answer is correct, just some additional remarks: "load" will look to the PATH to find the .mat file, whereas save will save to "some odd location". If you want to overwrite, you could do the following:

fileNameWithPath = which('defaultValues.mat');
save(fileNameWithPath);

Titus

[Adam]

I have set up an environment variable that my compiled applications use and ask the user to give a "Matlab working directory" for which is then used by all my compiled applications that user may install, but Titus' solution is simpler for just updating a given file.

[sejo]

Thx for your help! i will go with the 'simpler solution' as it works fine for me for the default values. for the other values which can be saved i use uigetfile and uiputfile...