NAME

r.out.arc - Converts a raster map layer into an ESRI ARCGRID file.
(GRASS Raster Data Export Program)

SYNOPSIS

r.out.arc
r.out.arc help
r.out.arc [-h] [-1] map=name [dp=value]

DESCRIPTION

r.out.arc converts a user-specified raster map layer (map=name) into an ESRI ARCGRID ascii file suitable for export to other computer systems. The dg=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 dg=value option.

The GRASS program r.in.arc can be used to perform the reverse function, converting an ESRI ARCGRID 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:

map=name
Name of an existing raster map layer.
dg=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 dg, using the form
r.out.arc map=name [dg=value]
where name is the name of a raster map layer to be converted to ARCGRID format, 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 map=soils > out.grd
The output file out.grd can then be copied onto a magnetic tape 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