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djpi2

Compute the rotation matrix d(pi/2) used in rotating data expressed in spherical harmonics.

Usage

dj = djpi2 (lmax)

Returns

dj : float, dimension (lmax+1, lmax+1, lmax+1): The rotation matrix dj(pi/2).

Parameters

lmax : integer: The maximum spherical harmonic degree of the spherical harmonic rotation.

Description

djpi2 will calculate the rotation matrix d_{mM}^j (pi/2) that is used in rotating spherical harmonics in the routines SHRotateRealCoef and SHRotateCoef.

This routine is based on code originally written by Guy Masters.

djpi2

Usage

Returns

Parameters

Description

See also