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How to crate datastore for .mat file dataset?

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john karli 2021-11-12

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https://ww2.mathworks.cn/matlabcentral/answers/1584824-how-to-crate-datastore-for-mat-file-dataset

评论： yanqi liu 2021-11-12

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

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回答（2 个）

KSSV 2021-11-12

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https://ww2.mathworks.cn/matlabcentral/answers/1584824-how-to-crate-datastore-for-mat-file-dataset#answer_829799

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

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yanqi liu 2021-11-12

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1584824-how-to-crate-datastore-for-mat-file-dataset#answer_829874

编辑：yanqi liu 2021-11-12

在 MATLAB Online 中打开

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 

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john karli 2021-11-12

在 MATLAB Online 中打开

How do i add a label like

includesubfolder = true

yanqi liu 2021-11-12

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

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