healpy.projaxes.HpxCartesianAxes.get_meridian_interval¶
-
HpxCartesianAxes.
get_meridian_interval
(vx, vy=None, vz=None)¶ Get the min and max value of phi of the meridians to cover the field of view.
- Input:
- the normalized vector of the direction of the center of the projection, in the reference frame of the graticule.
- Return:
- vmin,vmax : the interval of phi for the
meridians crossing the field of view.