car_to_cea
- pfsspy.utils.car_to_cea(m, method='interp')
Reproject a plate-carée map in to a cylindrical-equal-area map.
The solver used in pfsspy requires a magnetic field map with values equally spaced in sin(lat) (ie. a CEA projection), but some maps are provided equally spaced in lat (ie. a CAR projection). This function reprojects a CAR map into a CEA map so it can be used with pfsspy.
- Parameters:
m (sunpy.map.GenericMap) – Input map
method (str) – Reprojection method to use. Can be
'interp'
(default),'exact'
, or'adaptive'
. Seereproject
for a description of the different methods. Note that different methods will give different results, and not all will conserve flux.
- Returns:
output_map – Re-projected map. All metadata is preserved, apart from CTYPE{1,2} and CDELT2 which are updated to account for the new projection.
- Return type:
See also