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 12:09:06 -0700 (Fri, 16 May 2008) $

       Full index

       © 2003-2013 GRASS Development Team

GRASS 6.4.3                                                                                    r.out.arc(1grass)