is_in_cap

pydl.pydlutils.mangle.is_in_cap(x, cm, points)

Are the points in a (single) given cap?

Parameters:

x : ndarray or recarray

X value of the cap (3-vector).

cm : ndarray or recarray

CM value of the cap.

points : ndarray 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:

ndarray

A boolean vector giving the result for each point.