from histpy import Histogram, HealpixAxis
import astropy.units as u
[docs]class SpacecraftAttitudeMap(Histogram):
def __init__(self,
nside,
scheme = 'ring',
coordsys = 'galactic',
labels = ['x', 'y']
):
"""
Bin the spacecraft attitude history into a 4D histogram that contains
the accumulated time the axes of the spacecraft where looking at a
given direction.
Same arguments as an HealpixAxis.
Parameters
----------
nside : int
The nside of the spacecraft attitude map.
scheme : str, optional
The scheme of the spacecraft attitude map (the default is "ring").
coordsys : str, optional
The coordinate system of the spacecraft attitude map (the default is "galactic").
labels : list, optional
The labels of the two axes of the spacecraft attitude map (the default is `["x", "y"]`.
"""
super().__init__([HealpixAxis(nside = nside,
scheme = scheme,
coordsys = coordsys,
label = labels[0]),
HealpixAxis(nside = nside,
scheme = scheme,
coordsys = coordsys,
label = labels[1])],
sparse = True,
unit = u.s)