c2s

erfa.c2s(p)[source]

P-vector to spherical coordinates.

Parameters:
pdouble array
Returns:
thetadouble array
phidouble array

Notes

Wraps ERFA function eraC2s. The ERFA documentation is:

- - - - - - -
 e r a C 2 s
- - - - - - -

P-vector to spherical coordinates.

Given:
   p      double[3]    p-vector

Returned:
   theta  double       longitude angle (radians)
   phi    double       latitude angle (radians)

Notes:

1) The vector p can have any magnitude; only its direction is used.

2) If p is null, zero theta and phi are returned.

3) At either pole, zero theta is returned.

This revision:  2021 May 11

Copyright (C) 2013-2023, NumFOCUS Foundation.
Derived, with permission, from the SOFA library.  See notes at end of file.