Importing 3D matrix (.mat file format) via 'select file' if filename is unknown

Hey everyone,

probably a very basic question but I just can't find the answer. I have a script which contains a variable, an array in the format 400x400x2000 double (so basically a 3D matrix). I then save this variable as a .mat file on my PC.

Opening a new script, I can then click on 'Import Data' in the Home window, search for the file on my PC and it opens this 3D matrix and I have a variable in the same format 400x400x2000 double.

So, what I need: instead of clicking on 'Import Data' in the home window, I want to implement this in my script, so that I press 'Run' and the first thing is a window popping up where I can select the file and import it.

I thought this would be easy, but all the commands like 'load', imply that you have a filename ready, which I don't as it varies all the time. So how can I simply load that 3D matrix by searching for it???

I did use this command: [DataFilename, DataFilePathName] = uigetfile( '*.mat*')

But this won't give me my matrix as a 3D matrix in the double format. It will return 'abc' variables of DataFilename and DataPathName...I guess these two contain my 3D matrix somehow but I don't know how to get it out of there either....

It would be easier if I could just import the 3D matrix similar to the way when you do it manually via 'Import Data'...

Any suggestions?