'LabelSource' is not a recognized parameter. For a list of valid name-value pair arguments, see the documentation for signalDatastore.

I have dataset of .mat file which is present in folders. I want to read the folder name as label. but it did't work

imds = signalDatastore(dataDirectory,'IncludeSubfolders',true,'FileExtensions','.mat',  'LabelSource','foldernames');