SHTWGZ

DCL:MATH2:SHTLIB: Spherical Harmonic Functions: Explanation of Subroutines

4.3.17 SHTWGZ

1.

Function

Performs the inverse Legendre transformation, which corresponds to the latter half of the inverse spectral transformation, only for the zonal component.

2.

Definition

Transforms wave data W^m_(&phi)into grid data G_{(&lambda,&phi)} only for the zonal component m=0. See SHTW2G for equations of transformation.

3.

Call

SHTWGZ(JM,IM,WZ,G)

4.

Explanation of Parameters

JM (I) Input parameter. 1/2 of the NS partition number (J).

IM (I) Input parameter. 1/2 of the EW partition number (I).

WZ (R) Input parameter. Wave data. (W^m_(&phi)) (For length and arrangement, see SHTSWZ.)

G (R) Output parameter. Grid data. (For length and arrangement, see SHTW2G.)

5.

Notes

(a): None.

`JM`	`(I)`	Input parameter. 1/2 of the NS partition number (J).
`IM`	`(I)`	Input parameter. 1/2 of the EW partition number (I).
`WZ`	`(R)`	Input parameter. Wave data. (W^m_(&phi)) (For length and arrangement, see `SHTSWZ`.)
`G`	`(R)`	Output parameter. Grid data. (For length and arrangement, see `SHTW2G`.)