error using ovr for multi class svm

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Fateme Jalali le 15 Août 2016

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https://fr.mathworks.com/matlabcentral/answers/299650-error-using-ovr-for-multi-class-svm

Modifié(e) : Walter Roberson le 15 Août 2016

Hello,I am using libsvm to classify data into 60 classes.size of my train matrix is 360*200.360 is the number of observstion and 200 is the number of features. I use libsvm from here: https://www.researchgate.net/post/How_can_I_use_Libsvm_in_matlab_for_multi-class_SVM. I recieve this error:

Index exceeds matrix dimensions.
Error in OVR (line 48)
    trainData = data(trainIndex,:);
Error in sample (line 99)
[predictedLabel, decisValueWinner, totalAccuracy, confusionMatrix, order] = OVR(label,
ndata, runCVIndex, Ncv_classif, optionClassif);