pydl.pydlutils
pydl.pydlutils.mangle.
cap_distance
Compute the distance from a point to a cap, and also determine whether the point is inside or outside the cap.
ndarray
recarray
X value of the cap (3-vector).
X
CM value of the cap.
CM
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.
points
point
The distance(s) to the point(s) in degrees. If the distance is negative, the point is outside the cap.