NAME¶
grdclip - Clipping of range in grdfiles.
SYNOPSIS¶
grdclip input_file.grd -Goutput_file.grd [
-Sa high/above ] [
-Sblow/below ] [
-V ]
DESCRIPTION¶
grdclip will set values <
low to
below and/or values
>
high to
above. Useful when you want all of a continent or
an ocean to fall into one color or grayshade in image processing, or clipping
of the range of data values is required.
above/below can be any number
or NaN (Not a Number). You must choose at least one of
-Sa or
-Sb.
- input_file.grd
- The input 2-D binary grdfile.
- -G
- output_file.grd is the modified output grdfile.
OPTIONS¶
- -Sa
- Set all data[i] > high to above.
- -Sb
- Set all data[i] < low to below.
- -V
- Selects verbose mode, which will send progress reports to stderr [Default
runs "silently"].
EXAMPLES¶
To set all values > 70 to NaN and all values < 0 to 0 in file data.grd,
try:
grdclip data.grd
-Gnew_data.grd
-Sa70/NaN
-Sb0/0
-V
SEE ALSO¶
gmt(1gmt),
grdlandmask(1gmt),
grdmask(1gmt),
grdmath(1gmt),
grd2xyz(1gmt),
xyz2grd(1gmt)