/*	$Id: gmt_mgg_header2.h,v 1.9 2009/05/13 21:06:42 guru Exp $
 *
 *	Code donated by David Divens, NOAA/NGDC
 *	Distributed under the GNU Public License (see COPYING for details)
 */
#ifndef _H_MGG_HEADER_2
#define _H_MGG_HEADER_2

#define MGG_MAGIC_NUM	1000000000
#define MGG_VERSION			1
#define MGG_NAN_VALUE	999999
#define DEFAULT_PREC	10
#define GRD98_N_UNUSED	10

typedef struct {
	int	version;		/* 1,000,000,001 Magic_Num + Version */
	int	length;			/* 128 bytes */
	int     dataType;       /* 1=data, 2=density, 3=radius, -1=template */
	int	latDeg;
	int	latMin;
	int	latSec;
	int	latSpacing;
	int	latNumCells;
	int	lonDeg;
	int	lonMin;
	int	lonSec;
	int	lonSpacing;
	int	lonNumCells;
	int	minValue;		/* Whole meters */
	int	maxValue;		/* Whole meters */
	int	gridRadius;		/* -1 for grid radius not performed */
	int	precision;     	 /* 1 = whole meters, 10 = tenths of meters */
	int	nanValue;
	int     numType;        /* bytesize, pos=int, neg=float */
	int     waterDatum;     /* Vertical datum 0 = Mean Sea Level, 1 = local */
	int	dataLimit;		/* 2-byte, 4-byte -1 = float */
	int	cellRegistration;	/* 1 for pixel (cell centered), 0 for gridline */
	int    unused[GRD98_N_UNUSED];	/* Unused 4byte ints */
} MGG_GRID_HEADER_2;

GMT_LONG mgg2_read_grd_info (struct GRD_HEADER *header);
GMT_LONG mgg2_write_grd_info (struct GRD_HEADER *header);
GMT_LONG mgg2_read_grd (struct GRD_HEADER *header, float *grid, double w, double e, double s, double n, GMT_LONG *pad, BOOLEAN complex);
GMT_LONG mgg2_write_grd (struct GRD_HEADER *header, float *grid, double w, double e, double s, double n, GMT_LONG *pad, BOOLEAN complex);

#endif