Discrim function for Linear discriminant analysis problem

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Collet Bastien
Collet Bastien 2013-3-28
Hello, I am using the function "lda" from the discrim toolbox in matlab. However, I'm having the following error :
> In lda.lda at 191 In testLDA at 10 ??? Error using ==> inv Matrix must be square.
Error in ==> lda.lda at 196 S = S*inv(triu(qr(s*v')));
Error in ==> testLDA at 10 F = LDA(X, Y)
My matrix X : p x n where p is the number of nodes and n the number of features. My matrix Y : p x 1 (contains values between 1 and 6 because I have 6 classes).
Does anyone know how to fix this problem ?

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