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NAME
r.out.ascii - Converts a raster map layer into an ASCII text file.
KEYWORDS
raster, export
SYNOPSIS
r.out.ascii
r.out.ascii help
r.out.ascii [-hsmi] input=string [output=string] [dp=integer] [width=integer] [null=string] [--verbose] [--quiet]
Flags:
- -h
- Suppress printing of header information
- -s
- Write SURFER (Golden Software) ASCII grid
- -m
- Write MODFLOW (USGS) ASCII array
- -i
- Force output of integer values
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- input=string
- Name of an existing raster map
- output=string
- Name for output ASCII grid map (use out=- for stdout)
- dp=integer
- Number of significant digits (floating point only)
- width=integer
- Number of values printed before wrapping a line (only SURFER or MODFLOW format)
- null=string
- String to represent null cell (GRASS grid only)
- Default: *
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]
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
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.arc,
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: 2008-05-16 12:09:06 -0700 (Fri, 16 May 2008) $
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