How to upload mat files in Matlab App Designer?

Hi,

I have to upload some mat files in Matlab App designer. The code in matlab for uploading is:

location = 'Name of the location';

testData = imageDatastore(location, 'FileExtensions', '.mat', 'IncludeSubfolders',true, ...

'LabelSource','foldernames')

testData.ReadFcn = @readFcn1

How do I write this in Matlab App Designer?

Thank you

[Adam]

You can write code exactly the same in app designer as you can anywhere else. What you want to do with it obviously determines exactly how you hook it up, but to load a mat file in app designer is no different to doing it in a regular function.

[Tajana Lusetic]

I want to be able to choose multiple files from a directory (for my pretrained Neural Network), and I wrote this code

DataLocation=uigetdir(Location of the Data); testData=imageDatastore(fullfile(DataLocation),'FileExtensions','.mat','IncludeSubfolders',true,... 'LabelSource','foldernames');

app.data=testData;

app.data.ReadFcn=@readFcn1;

And when I open the folder, it is empty(it's not showing me my files) and I get an error

Error using imageDatastore.

Files must be a non-empty character vector or string scalar.

So I am stuck.