What is the error in the code?

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Sumeet Badgujar 2018-10-27

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https://ww2.mathworks.cn/matlabcentral/answers/426449-what-is-the-error-in-the-code

关闭： MATLAB Answer Bot 2021-8-20

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    aa=input('image.jpg');
    z=aa;
    e=input ('Enter lower threshold value ');
    f=input ('Enter higher threshold value ');
    %Grey level with background
    mask = (z>e) & (z<f);
    z(mask)=255;
    subplot(2,2,3);
    imshow(z);
    title ('Grey level sliced image with background');
    %Grey level without background
    mask = (z>e) & (z<f);
    z(mask)=255;
    mask1=(z<e) & (z>f);
    z(mask1)=0;
    subplot(2,2,4);
    imshow(z);
    title ('Grey level sliced image without background');