healpy.projector.SphericalProj.vec2xy

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

From unit vector direction to position in the projection plane (%s).

Input:
  • vx: if vy and vz are None, vx[0],vx[1],vx[2] defines the unit vector.
  • vy,vz: if defined, vx,vy,vz define the unit vector
  • lonlat: if True, angle are assumed in degree, and longitude, latitude
  • flipconv is either ‘astro’ or ‘geo’. None will be default.
Return:
  • x, y: position in %s plane.

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