SUBGRD

Creates geographic subsectors of Mercator grids.

Format

SUBGRD sgridf bgrid egrid dgridf [keywords]

Parameters

sgridf	source grid file
bgrid	beginning grid number to subsect (default=1)
egrid	ending grid number to subsect (default=all)
dgridf	destination grid file number

Keywords

LAT=	slat nlat	destination latitude extents (no default)
	slat	southern latitude extent
	nlat	northern latitude extent
LON=	elon wlon	destination longitude extents (no default)
	elon	eastern longitude extent
	wlon	western longitude extent
MAX=	maximum number of grids in destination grid file (default=egrid-bgrid +1)

Remarks

The command SUBGRD only creates geographic subsectors of Mercator projection grids.

Example

SUBGRD 1000 1 10 1200 LAT=20 60 LON=40 150

This entry creates grid subsectors with the geographic domain 20° to 60° North and 40° to 150° West from grids 1 through 10 in grid file 1000. The grid subsectors are stored in grid file 1200, which stores 10 grids maximum.

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