GRDEDIT
Section: Misc. Reference Manual Pages (l)
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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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