DCL:MATH2:SHTLIB: Spherical Harmonic Functions: Explanation of Subroutines
Performs forward Fourier transformation, which corresponds to the first half of the forward spectral transformation.
Performs forward Fourier transformation on grid data.
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SHTG2W(MM,JM,IM,G,W,WORK)
MM (I) Input parameter. The cut-off wavenumber (M). JM (I) Input parameter. 1/2 of the NS partition number (J) IM (I) Input parameter. 1/2 of the EW partition number (I) G (R) Input parameter. Grid data. (For length and arrangement, see SHTW2G.) W (R) Output parameter. Wave data. (For length and arrangement, see SHTS2W.) WORK (R) Working area initialized by SHTINT.