LogSpiral¶
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class
gammapy.astro.population.
LogSpiral
[source]¶ Bases:
object
Logarithmic spiral.
Reference: http://en.wikipedia.org/wiki/Logarithmic_spiral
Methods Summary
radius
(theta, spiralarm_index)Radius for a given angle. theta
(radius, spiralarm_index)Angle for a given radius. xy_position
([theta, radius, spiralarm_index])Compute (x, y) position for a given angle or radius. Methods Documentation
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radius
(theta, spiralarm_index)[source]¶ Radius for a given angle.
Parameters: theta : array_like
Angle (deg)
spiralarm_index : int
Spiral arm index
Returns: radius : array_like
Radius (kpc)
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