How to crate datastore for .mat file dataset?

I have 3 classes and each class contain 2000 sample of .mat. for example

2PSK

fram2psk1.mat, fram2psk2.mat, fram2psk3.mat, fram2psk4.mat, ......... fram2psk2000.mat,

4PSK

fram4psk1.mat, fram4psk2.mat, fram4psk3.mat, fram4psk4.mat, ......... fram4psk2000.mat,

8PSK

fram8psk1.mat, fram8psk2.mat, fram8psk3.mat, fram8psk4.mat, ......... fram8psk2000.mat,

How do i crate a datastore to train modeil on this dataset

Answer 1

[KSSV]

Read here an example is given: https://in.mathworks.com/help/matlab/ref/matlab.io.datastore.filedatastore.html#mw_1ef829ea-2656-4260-9dcb-f676352d8470

Answer 2

[yanqi liu]

sir，may be use cell to save the data in mat file，such as

[XTrain,YTrain] = japaneseVowelsTrainData

XTrain = 270×1 cell array
    {12×20 double}
    {12×26 double}
    {12×22 double}
    {12×20 double}
    {12×21 double}
    {12×23 double}
    {12×22 double}
    {12×18 double}
    {12×24 double}
    {12×15 double}
    {12×23 double}
    {12×15 double}
    {12×17 double}
    {12×14 double}
    {12×14 double}
    {12×15 double}

YTrain = 270×1 categorical array
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 
     1 

[john karli]

How do i add a label like

includesubfolder = true

[yanqi liu]

sir，i think use Y to define label，such as Y{1} = 'folder1'