DESCRIPTION
r.out.ascii converts a user-specified raster map layer
(input=name) into an ASCII grid in a text file
(output=name) suitable for export to
other computer systems.
The GRASS program r.in.ascii can be
used to perform the reverse function, converting an ASCII file in suitable
format to GRASS raster map format.
To write a SURFER .grd ASCII GRID file (with reverted row order and different
header) use the -s flag:
r.out.ascii -s input=inname output=outname.grd [dp=value]
NULL data are coded to "1.70141e+038" for SURFER ASCII GRID files (ignoring
the null= parameter).
NOTES
The output from r.out.ascii may be placed into a file by using the
UNIX redirection mechanism; e.g.:
r.out.ascii input=soils output=- > out.file
The output file out.file can then be printed or copied onto a CDROM
or floppy disk for export purposes.
To export the raster values as x,y,z values of cell centers (one per line)
use the r.out.xyz module.
SEE ALSO
r.in.ascii,
r.in.gdal,
r.out.bin,
r.out.gdal,
r.out.xyz
AUTHOR
Michael Shapiro,
U.S. Army Construction Engineering Research Laboratory
Surfer support by Markus Neteler
Last changed: $Date$