Someone Please Help me to save Features into .mat file along with labels

Question

saeeda saher 2018-6-8

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/404776-someone-please-help-me-to-save-features-into-mat-file-along-with-labels

评论： Walter Roberson 2018-6-8

Here is my code, I am beginner and dont kow how to edit it. I want to save HOG features into .mat file with labels. Please help.

training=imageSet('Training/Fear','recursive'); %  folder name of the database 
K=1;
%featureMatrix = [];
for i=1:size(training,2 )
    for j=1:training(i).Count
        Face=read(training(i),j);
       Face=imresize(Face, [48 48]);
        %Face=rgb2gray(Face); %If color images
       % Face = pca(double(Face));
        %newFace = LBP(Face);
        %imshow(uint8(Face))
        HOG_Features= extractHOGFeatures2(Face);
         %featureMatrix = [featureMatrix; HOG_Features];
         %disp(featureMatrix )
         trainingFeatures(K,:)=single(HOG_Features);
          % plot(visualization);
          traininglabel{K}=training(i).Description;
        K=K+1;
    end
    persons{i}=training(i).Description;
end
traininglabel=traininglabel';
csvwrite('TrainFear4-2.csv', trainingFeatures)

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Answer 1

Walter Roberson 2018-6-8

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https://ww2.mathworks.cn/matlabcentral/answers/404776-someone-please-help-me-to-save-features-into-mat-file-along-with-labels#answer_323876

在 MATLAB Online 中打开

To save in a .mat file:

save('TrainFear4-2.mat', 'traininglabel', 'trainingFeatures');

If you wanted to save into .csv file like in the existing code:

data_to_write = [traininglabel(:), num2cell(trainingFeatures)];
csvwrite('TrainFear4-2.csv', data_to_write);

Note that this would only work for MS Windows with Excel installed; for other systems different commands would be needed to write the file.

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saeeda saher 2018-6-8

I tried your code but its not saving the labels on right side of mat file after the features in one .mat file.

Walter Roberson 2018-6-8

.mat files do not have a left or right side.

Note: it is not possible to create a numeric array that has text labels as part of it. You can have cell arrays that have a mix of numeric and text, and you can have table() objects that have a mix of columns of numeric and columns of text.

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