GnomonicProj.vec2xy(self, vx, vy=None, vz=None, direct=False)

From angular direction to position in the projection plane (Gnomonic).

  • theta: if phi is None, theta[0] contains theta, theta[1] contains phi

  • phi : if phi is not None, theta,phi are direction

  • lonlat: if True, angle are assumed in degree, and longitude, latitude

  • flipconv is either ‘astro’ or ‘geo’. None will be default.

  • x, y: position in Gnomonic plane.