circle_cap¶

pydl.pydlutils.mangle.circle_cap(radius, points)[source]¶

Construct caps based on input points (directions on the unit sphere).

Parameters

radiusfloat or ndarray: Radii of the caps in degrees. This will become the CM value.
pointsndarray or recarray: If points is a 3-vector, or set of 3-vectors, then assume the point is a Cartesian unit vector. If point is a 2-vector or set of 2-vectors, assume the point is RA, Dec.

Returns