r.out.ascii(1grass) GRASS GIS User's Manual r.out.ascii(1grass)
NAME
r.out.ascii - Converts a raster map layer into a GRASS ASCII text
file.
KEYWORDS
raster, export, output, ASCII
SYNOPSIS
r.out.ascii
r.out.ascii --help
r.out.ascii [-hsmi] input=name [output=name] [precision=integer]
[width=integer] [null_value=string] [--overwrite] [--help]
[--verbose] [--quiet] [--ui]
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
--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
input=name [required]
Name of input raster map
output=name
Name for output ASCII grid map (use out=- for stdout)
precision=integer
Number of significant digits (floating point only)
width=integer
Number of values printed before wrapping a line (only SURFER or
MODFLOW format)
null_value=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 func-
tion, 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 (ig-
noring 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
SOURCE CODE
Available at: r.out.ascii source code (history)
Accessed: unknown
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GRASS 7.8.7 r.out.ascii(1grass)
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