MATLAB Answers

How to search functions for mat use

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hbcukid on 11 Feb 2021
Commented: hbcukid on 12 Feb 2021
I am working in a somewhat large folder and am trying to find out which all files or functions call/use this "test.mat" file. Is there a command I can use to see where all it is used? I tried things like
which who(test.mat)
which test.mat -all
but the results only yielded the path
hbcukid on 12 Feb 2021
Searching on Notepad worked, thanks

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Accepted Answer

John D'Errico
John D'Errico on 11 Feb 2021
Edited: John D'Errico on 11 Feb 2021
You can use my mgrep function, downloadable form the file exchange.
In your case, if you want to search for use of that file in your code,
mgrep test.mat . recurse off
The above command will cause mgrep to search for the string 'test.mat'. EVERY file in the current directory will be searched. The directory it will look in is the "dot" directory, that is, the current directory. If you wanted to specify some other directory, then just specify the complete directory path instead of the . in that command.
Finally, the nature of mgrep is by default to then search iteratively down all subdirectories below the one shosen. If you want it to search ONLY the current directory, you would do as I did, set recurse to off.
The default behavior of mgrep is to also show the line where that string occurs. You can turn that off. You can also set a case preference.
For example, I just used this tool, to search in the complete directory of files I've ever written, searching for occurences of the string 'usage'. Here are a few of the hundreds of cases where it found that string.
>> mgrep usage . recurse off
% usage 1: res = tessquad(fun,order,data)
% usage 2: res = tessquad(fun,order,data,tess)
% example usage 1: integrate the function x1*x2, over the unit
% example usage 2: integrate the function x1*x2*x3, over the
% usage: tritarget = triramp(c,space,npixels,background)
% usage: pu = uniqueperms(vec)
As you can see, it shows which file the call occurs in, as well as the line where it found that string.
You can download mgrep here:

More Answers (1)

Image Analyst
Image Analyst on 12 Feb 2021
I'd type control-shift-F then tell it to search all m-files in some folder and subfolder for whatever you think it might look like, for examples, search for
or however else you might think "test" would appear in your code.

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