finite_first_d

jwst.extract_1d.soss_extract.atoca_utils.finite_first_d(grid)[source]

Return the first derivative operator based on grid.

Parameters:

gridarray[float]: Grid where the first derivative will be computed.

Returns:

first_darray[float]: Operator to compute the first derivative, so that f' = first_d.dot(f), where f is a function projected on grid.