healpix_geo.nested.zoom_to

healpix_geo.nested.zoom_to(ipix, depth, new_depth, num_threads=0)

Change the resolutions the given cell ids

Parameters:

• ipix (numpy.ndarray) – The HEALPix cell indexes given as a np.uint64 numpy array.

• depth (int) – The depth of the HEALPix cells.

• new_depth (int) – The new depth of the HEALPix cells.

Returns:

cells (numpy.ndarray) – A \(N\) (depth >= new_depth) or \(N\) x \(4^{\delta d}\) np.int64 numpy array containing the parents or children of the given cells. If depth == new_depth, returns the input pixels