McIDAS-XCD Administrator's Guide
Version 2018.1

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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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