Find the coefficients of the plane equation

plane_coefficients(p, n)

## Arguments

p A point on the plane (or N x 3 matrix of multiple points) vector normal to the plane (or N x 3 matrix of multiple vectors)

## Value

a matrix with 4 columns a,b,c,d where ax + by + cz + d = 0

## Details

Both p and n can accept multiple points/vectors to calculate many planes at once.

Other geometry: intersect_plane()

}