specpack.c File Reference

Pack a spectral data field using the complex packing algorithm for spherical harmonic data. More...

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "grib2_int.h"

Go to the source code of this file.

Functions
void	specpack (float *fld, g2int ndpts, g2int JJ, g2int KK, g2int MM, g2int *idrstmpl, unsigned char *cpack, g2int *lcpack)
	This subroutine packs a spectral data field using the complex packing algorithm for spherical harmonic data as defined in the GRIB2 Data Representation Template 5.51. More...

Detailed Description

Pack a spectral data field using the complex packing algorithm for spherical harmonic data.

Author

Stephen Gilbert

Date

2002-12-19

Definition in file specpack.c.

Function Documentation

specpack()

void specpack	(	float *	fld,
		g2int	ndpts,
		g2int	JJ,
		g2int	KK,
		g2int	MM,
		g2int *	idrstmpl,
		unsigned char *	cpack,
		g2int *	lcpack
	)

This subroutine packs a spectral data field using the complex packing algorithm for spherical harmonic data as defined in the GRIB2 Data Representation Template 5.51.

Parameters

fld	Contains the data values to be packed.
ndpts	The number of data values to pack.
JJ	J - pentagonal resolution parameter.
KK	K - pentagonal resolution parameter.
MM	M - pentagonal resolution parameter.
idrstmpl	Contains the array of 10 values for [Data Representation Template 5.51](https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_temp5-51.shtml).
cpack	Pointer that gets the packed data field. Must be allocated by caller.
lcpack	length of packed field cpack.

Author

Stephen Gilbert

Date

2002-12-19

Definition at line 33 of file specpack.c.

References mkieee(), and simpack().

Referenced by g2_addfield().