Pix2Sky_SlantOrthographic¶
-
class
astropy.modeling.projections.
Pix2Sky_SlantOrthographic
(xi=0.0, eta=0.0, **kwargs)[source] [edit on github]¶ Bases:
astropy.modeling.projections.Pix2SkyProjection
,astropy.modeling.projections.Zenithal
Slant orthographic projection - pixel to sky.
Corresponds to the
SIN
projection in FITS WCS.See
Zenithal
for a definition of the full transformation.The following transformation applies when
and
are both zero.
The parameters
and
are defined from the reference point
as:
Parameters: xi : float
Obliqueness parameter, ξ. Default is 0.0.
eta : float
Obliqueness parameter, η. Default is 0.0.
Attributes Summary
eta
param_names
xi
Methods Summary
evaluate
(x, y, xi, eta)Attributes Documentation
-
eta
¶
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param_names
= ('xi', 'eta')¶
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xi
¶
Methods Documentation
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classmethod
evaluate
(x, y, xi, eta)[source] [edit on github]¶
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