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Following is the error in my program

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Balaji M. Sontakke
Balaji M. Sontakke on 9 Oct 2018
Index exceeds matrix dimensions.
Error in threshold (line 13)
correctMinimum(j) = allMinimum(i);
Error in knnclassify (line 177)
[minThreshold,maxThreshold] = threshold(AVM,recognition);
Error in maintotaldemo (line 76)
predictlabel = knnclassify(P_test, P_train, train_label,3,'euclidean','nearest');
[dIndex,dista]= knnsearch(TRAIN,sample,'distance', distance,'K',K)
%%calculating FAR and FRR using threshold
personsNo = 10;
for i=1:personsNo
originalTest(1,((i-1)*12)+1:((i-1)*12)+12) = i;
recognition = (originalTest'==test);
AVM = dista(2:40,:);
[minThreshold,maxThreshold] = threshold(AVM,recognition);
[FAR,FRR] = ROC(AVM,minThreshold,maxThreshold);

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