pygsti.objects.StaticSPAMVec.deriv_wrt_params

StaticSPAMVec.deriv_wrt_params()

Construct a matrix whose columns are the derivatives of the SPAM vector with respect to a single param. Thus, each column is of length get_dimension and there is one column per SPAM vector parameter. An empty 2D array in the StaticSPAMVec case (num_params == 0).

Returns:Array of derivatives, shape == (dimension, num_params)
Return type:numpy array