local_partial_pixel_derivatives(wcs, *pixel, normalize_by_world=False)¶
Return a matrix of shape
(world_n_dim, pixel_n_dim)where each entry
[i, j]is the partial derivative d(world_i)/d(pixel_j) at the requested pixel position.
The WCS transformation to evaluate the derivatives for.
The scalar pixel coordinates at which to evaluate the derivatives.
True, the matrix is normalized so that for each world entry the derivatives add up to 1.