Spherical harmonic I/O, storage, and conversions

Spherical harmonic I/O

Routine name	Description
SHRead	Read spherical harmonic coefficients from an ascii-formatted file.
SHRead2	Read spherical harmonic coefficients from a CHAMP or GRACE-like ASCII file.
SHReadJPL	Read spherical harmonic coefficients from a JPL ASCII file.

Spherical harmonic storage

Routine name	Description
SHCilmToCindex	Convert a three-dimensional array of complex spherical harmonic coefficients to a two-dimensional indexed array.
SHCindexToCilm	Convert a two-dimensional indexed array of complex spherical harmonic coefficients to a three-dimensional array.
SHCilmToVector	Convert a 3-dimensional array of real spherical harmonic coefficients to a 1-dimensional ordered array.
SHVectorToCilm	Convert a 1-dimensional indexed vector of real spherical harmonic coefficients to a 3-dimensional array.
YilmIndexVector	Determine the index of a 1D ordered vector of spherical harmonic coefficients corresponding to i, l, and m.

Spherical harmonic conversions

Routine name	Description
SHrtoc	Convert real spherical harmonics to complex form.
SHctor	Convert complex spherical harmonics to real form.

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