vang

Source: utils/misc/vang.pro

 vang
        Return the angle between 2 vectors.

 Usage:
        angle = vang(v1, v2)

 Arguments:
        v1,v2   float   2 3-element vectors, (need not be unit
                        vectors).

 Keywords:
        cosine  If set, then return the cosine of the angle (since
                that's what we use in PAD and we get there first).

 History:
        Original: 25/2/00; SJT