why i'm getting the following error using fitcecoc

Question

Kuljinder Singh 2019-3-28

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/453089-why-i-m-getting-the-following-error-using-fitcecoc

评论： Saira 2020-3-11

在 MATLAB Online 中打开

Following is the code:

%%dataset= datastore('D:\mat_project');

imgfolder=fullfile('D:\','mat_project');

dataset = imageSet(imgfolder);

trainingLabel = zeros(1, 11);

personIndex = zeros(1, 11);

[training,test] = partition(dataset,[0.8 0.2]);

%%hog features for training set

trainingFeatures=zeros(size(training,2)*training(1).Count,531036);

featureCount=1;

for i= 1:size(training,2)

for j= 1:training(i).Count

trainingFeatures(featureCount,:)=extractHOGFeatures(read(training(i),j));

trainingLabel(featureCount,:)=training(i).Description;

featureCount=featureCount+1;

end

personIndex(i,:)=training(i).Description;

end

Classifier = fitcecoc(trainingFeatures,trainingLabel);

%%test imaage from test set

person=1;

querImage=read(test(person),1);

queryFeatures = extractHOGFeatures(queryImage);

personLabel = predict(faceClassifier,queryFeatures);

booleanIndex = strcmp(personLabel, personIndex);

integerIndex = find(booleanIndex);

subplot(1,2,1);imshow(queryImage);title('Query Face');

subplot(1,2,2);imshow(read(training(integerIndex),1));title('Matched Class');

Error using classreg.learning.internal.ClassLabel (line 29)

You must pass class labels as a vector.

Error in classreg.learning.classif.FullClassificationModel.prepareData (line 480)

allClassNames = levels(classreg.learning.internal.ClassLabel(Y));

Error in classreg.learning.FitTemplate/fit (line 213)

this.PrepareData(X,Y,this.BaseFitObjectArgs{:});

Error in ClassificationECOC.fit (line 116)

this = fit(temp,X,Y);

Error in fitcecoc (line 329)

obj = ClassificationECOC.fit(X,Y,ecocArgs{:});

Error in example (line 18)

Classifier = fitcecoc(trainingFeatures,trainingLabel);

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Answer 1

Rohan Amarapurkar 2019-3-28

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/453089-why-i-m-getting-the-following-error-using-fitcecoc#answer_367963

As the error message suggeests, check your trainingLabel variable. Its dimensions must match with the dimensions (number of rows) of the trainingFeatures variable. You also might want to check the for loops again, there could be an error in the way you are allocating values to trainingLabel.