bladex.ndinterpolator.RBF.weights_matrix¶

RBF.weights_matrix(X1, X2)[source]¶

This method returns the following matrix:

$\boldsymbol{D_{ij}} = \varphi(\| \boldsymbol{x_i} - \boldsymbol{y_j} \|)$

Parameters:	X1 (numpy.ndarray) – the vector x in the formula above. X2 (numpy.ndarray) – the vector y in the formula above.
Returns:	matrix: the matrix D.
Return type:	numpy.ndarray