NAME¶
r.out.arc - Converts a raster map layer into an ESRI ARCGRID file.
KEYWORDS¶
raster, export
SYNOPSIS¶
r.out.arc
r.out.arc help
r.out.arc [-
h1c]
input=
name
output=
name [
dp=
integer] [--
verbose]
[--
quiet]
Flags:¶
- -h
-
Suppress printing of header information
- -1
-
List one entry per line instead of full row
- -c
-
Use cell center reference in header instead of cell corner
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- input=name
-
Name of input raster map
- output=name
-
Name for output ARC-GRID map (use out=- for stdout)
- dp=integer
-
Number of decimal places
Default: 8
DESCRIPTION¶
r.out.arc converts a user-specified raster map layer (
input=name) into an ESRI ARC-GRID ascii file (
output=name) suitable for export to other computer systems. The
dp=
value option (where
value is a number of the user's choice)
can be used to request that numbers after decimal points are limited. However,
to use this, the user should know the maximum number of digits that will occur
in the output file. The user can find the maximum number of digits occurring
in the output file by running
r.out.arc without the
dp=value option.
The GRASS program
r.in.arc can be used to perform the reverse function,
converting an ESRI ARC-GRID ascii file in suitable format to GRASS raster map
format. The order of cell values in file is from lower left to upper right
(reverse to GRASS).
NOTES¶
The output from
r.out.arc may also be placed into a file by using the
UNIX redirection mechanism; e.g.:
r.out.arc input=soils output=- > out.grd
The output file
out.grd can then be copied onto a CDROM or floppy disk
for export purposes.
An Arc ASCII grid can be loaded into ArcGIS 8.3 though ArcToolbox.
Use the "Import to Raster" -> "ASCII to Grid" tool to
create a binary grid which can be selected using ArcCatalog. The spatial
analyst extension may need to be installed and activated within Arc.
In ArcGIS 9.0 the import tool can be found at:
ArcMap -> Toolbox -> Conversion Tools -> To Raster -> ASCII to
Raster
A GeoTIFF created with
r.out.gdal is sometimes a better solution for
transferring raster maps to other GIS software.
SEE ALSO¶
r.in.arc
r.out.gdal
AUTHOR¶
Markus Neteler, University of Hannover, Germany,
based on r.out.ascii written by
Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
Last changed: $Date: 2008-05-16 21:09:06 +0200 (Fri, 16 May 2008) $
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