Function polarXYZ( phi, theta, r )
- Description:
-
Converts from spherical polar to Cartesian coordinates.
- Parameters:
-
- phi (floating point)
- longitude in degrees
- theta (floating point)
- latitude in degrees
- r (floating point)
- radial distance
- Return Value (array of floating point):
- 3-element vector giving Cartesian coordinates
- Examples:
polarXYZ(ra, dec, distance_estimate)
polarXYZ(l, b, 3262./parallax)
- calculates vector components in units of light year
in the galactic system, on the assumption that distance is
the inverse of parallax
- Signature:
- double[] polarXYZ(double, double, double)