Covariance matrix error massage

Hello, I have a microarray data matrix Sample(19 by 5000),when I classified this matrix, the matlab produce error message"covariance matrix must be positive definite for each group". How I can overcome this error? thanks

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Jan
Jan le 30 Mar 2014
Please post your code and a complete copy of the error message.

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le 20 Août 2021

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