NAME
r.out.arc - Converts a raster map layer
into an ESRI ARC-GRID file.
(GRASS Raster Data Export Program)
SYNOPSIS
r.out.arc
r.out.arc help
r.out.arc [-h] [-1] input=name
output=name [dp=value]
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 file format. The order of cell values in file is from lower left to
upper right (reverse to GRASS).
OPTIONS
Flags:
- -h
- Suppress printing of header information.
- -1
- List one entry per line.
Parameters:
- input=name
- Name of an existing raster map layer.
- output
- Name of an output ARC-GID map (use output=- for stdout)
- dp=value
- The minimum number of decimals (per cell) to be printed.
r.out.arc can be run either non-interactively or
interactively. The program will be run non-interactively
if the user specifies the name of a raster map layer and
(optionally) a value for dp, using the form
-
r.out.arc input=inname output=outname [dp=value]
where inname is the name of a raster map layer to be converted to
ARC-GRID format, outname is the name of a raster map layer to be
exported, and value is the minimum number of digits (per cell) to
be printed to output. The user can also the -h option to suppress
the output of file header information.
Alternately, the user can simply type r.out.arc on the command line,
without program arguments. In this case, the user will be prompted for
parameter values using the standard GRASS
parser interface.
NOTES
The output from r.out.arc may 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.
SEE ALSO
r.in.arc
parser
AUTHOR
Markus Neteler, University of Hannover, Germany,
based on r.out.ascii from
Michael Shapiro,
U.S.Army Construction Engineering
Research Laboratory
Last changed: $Date$