GRDEDIT

Section: Misc. Reference Manual Pages (l)
Updated: DATE
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NAME

grdedit - Modifying the header in a 2-D grdfile  

SYNOPSIS

grdedit grdfile [-Dxunit/yunit/zunit/scale/offset/title/remark] [ -Rwest/east/south/north[r] ] [-S ]  

DESCRIPTION

grdedit reads the header information in a binary 2-D grdfile and replaces the information with values provided on the command line [if any]. As an option, global, geographical grids (with 360 degrees longitude range) can be rotated in the east-west direction. grdedit only operates on files containing a grdheader.
       No space between the option flag and the associated arguments. Use upper case for the
option flags and lower case for modifiers.
grdfile
Name of the 2-D grdfile to modify

 

OPTIONS

-D
Give new values for xunit, yunit, zunit, scale, offset, title, and remark. To leave some of the values untouched, specify = as the new value. #include "explain_-R.txt"
-S
For global, geographical grids only. Grid values will be shifted laterally according to the new borders given in -R.
 

EXAMPLES

Let us assume the file data.grd covers the area 300/310/10/30. We want to change the boundaries from geodetic longitudes to geographic and put a new title in the header. We accomplish this by

grdedit data.grd -R-60/-50/10/30 -D=/=/=/=/=/"Gravity Anomalies"/=

The grid world.grd has the limits 0/360/-72/72. To shift the data so that the limits would be -180/180/-72/72, use

grdedit world.grd -R-180/180/-72/72 -S  

SEE ALSO

gmt, grd2xyz, xyz2grd #include "refs.i"


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
SEE ALSO

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