Object that is able to take its own derivative with respect to landmark changes.
The derivative of this spatial object with respect to spatial changes in anchor landmark points or centres, evaluated at points.
(n_points, n_dims)ndarray) – The spatial points at which the derivative should be evaluated.
(n_points, n_centres, n_dims)ndarray) – The Jacobian wrt landmark changes.
d_dl[i, k, m]is the scalar differential change that the any dimension of the
i’th point experiences due to a first order change in the
m’th dimension of the
k’th landmark point.
Note that at present this assumes that the change in every dimension is equal.