create my .mat file

Hello!

I saw the next tutorial: https://www.mathworks.com/videos/object-recognition-deep-learning-and-machine-learning-for-computer-vision-121144.html.

At the Demo 2 was doing with deep lerning a food detection. For this was use a .mat file.

I want to use the code for road sign detection but I don't know how to create my .mat file.

I have 25 images for input and I want to do a .mat file.

I searched on Internet and I found the following code.

%Generate mat file
srcFile = dir('..\ROAD-SIGN\*.jpg')
result = cell(1,length(srcFile))
for i = 1 : length(srcFile)
    filename = strcat('...\ROAD-SIGN\',srcFile(i).name)
    I = imread(filename);
    %figure, imshow(I);
    I = imresize(I,[273 273]);
    result{i} = I;  
    %figure, imshow(result{i});
end

save images1.mat, result;
length(srcFile)


load('images1.mat')
for j = 1:length(srcFile)
    figure, imshow(result{j});
end

%Read mat file 
for j =1 :length(srcFile)
    filename = strcat('...\ROAD-SIGN\',srcFile(j).name);
    I = imread(filename);
    a='I';
    input = load('images1.mat',a);
    figure, imshow(input.(a));
end

whos -file images1.mat

But it isn't working because in the main program is useing the layer attribut. In my code for a .mat file I don't have the layer attribute.

Can anyone help me with a solution, please?