Sky2Pix_CylindricalPerspective¶
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class
astropy.modeling.projections.Sky2Pix_CylindricalPerspective(mu=1.0, lam=1.0, **kwargs)[source] [edit on github]¶ Bases:
astropy.modeling.projections.Sky2PixProjection,astropy.modeling.projections.CylindricalCylindrical Perspective - sky to pixel.
Corresponds to the
CYPprojection in FITS WCS.\[\begin{split}x &= \lambda \phi \\ y &= \frac{180^{\circ}}{\pi}\left(\frac{\mu + \lambda}{\mu + \cos \theta}\right)\sin \theta\end{split}\]Parameters: - mu : float
Distance from center of sphere in the direction opposite the projected surface, in spherical radii, μ. Default is 0.
- lam : float
Radius of the cylinder in spherical radii, λ. Default is 0.
Attributes Summary
lammuparam_namesMethods Summary
evaluate(phi, theta, mu, lam)Evaluate the model on some input variables. Attributes Documentation
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lam¶
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mu¶
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param_names= ('mu', 'lam')¶
Methods Documentation
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classmethod
evaluate(phi, theta, mu, lam)[source] [edit on github]¶ Evaluate the model on some input variables.