numpy covariance matrix

Question

Suppose I have two vectors of length 25, and I want to compute their covariance matrix. I try doing this with numpy.cov, but always end up with a 2x2 matrix.

Answer 1

i don't think you understand the definition of covariance matrix. If you need 25 x 25 covariance matrix, you need 25 vectors each with n data points.