Sky2Pix_HEALPix

class astropy.modeling.projections.Sky2Pix_HEALPix(*args, **kwargs)

Bases: Sky2PixProjection, HEALPix

HEALPix projection - sky to pixel.

Corresponds to the HPX projection in FITS WCS.

Parameters:

Hpython:float

The number of facets in longitude direction.

Xpython:float

The number of facets in latitude direction.

Attributes Summary

H
X
param_names	Names of the parameters that describe models of this type.

Attributes Documentation

H = _ParameterDS('H', value=4.0)

X = _ParameterDS('X', value=3.0)

param_names = ('H', 'X')

Names of the parameters that describe models of this type.

The parameters in this tuple are in the same order they should be passed in when initializing a model of a specific type. Some types of models, such as polynomial models, have a different number of parameters depending on some other property of the model, such as the degree.

When defining a custom model class the value of this attribute is automatically set by the Parameter attributes defined in the class body.