1r.out.arc(1)                  Grass User's Manual                 r.out.arc(1)
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NAME

6       r.out.arc  - Converts a raster map layer into an ESRI ARCGRID file.
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KEYWORDS

9       raster
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SYNOPSIS

12       r.out.arc
13       r.out.arc help
14       r.out.arc  [-h1] input=string output=string  [dp=integer]   [--verbose]
15       [--quiet]
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17   Flags:
18       -h
19           Suppress printing of header information
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21       -1
22           List one entry per line instead of full row
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24       --verbose
25           Verbose module output
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27       --quiet
28           Quiet module output
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30   Parameters:
31       input=string
32           Name of an existing raster map layer
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34       output=string
35           Name of an output ARC-GID map (use out=- for stdout)
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37       dp=integer
38           Number of decimal places
39           Default: 8
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DESCRIPTION

42       r.out.arc converts a user-specified raster map layer (input=name)  into
43       an  ESRI ARC-GRID ascii file (output=name) suitable for export to other
44       computer systems.  The dp=value option (where value is a number of  the
45       user's choice) can be used to request that numbers after decimal points
46       are limited.  However, to use this, the user should  know  the  maximum
47       number of digits that will occur in the output file.  The user can find
48       the maximum number of digits occurring in the output  file  by  running
49       r.out.arc without the dp=value option.
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51       The GRASS program r.in.arc can be used to perform the reverse function,
52       converting an ESRI ARC-GRID ascii file  in  suitable  format  to  GRASS
53       raster  map format. The order of cell values in file is from lower left
54       to upper right (reverse to GRASS).
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NOTES

57       The output from r.out.arc may also be placed into a file by  using  the
58       UNIX redirection mechanism;  e.g.:
59       r.out.arc input=soils output=- > out.grd
60        The output file out.grd can then be copied onto a CDROM or floppy disk
61       for export purposes.
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63       An Arc ASCII grid can be loaded into ArcGIS 8.3 though ArcToolbox.
64       Use the "Import to Raster" -> "ASCII to Grid" tool to create  a  binary
65       grid which can be selected using ArcCatalog. The spatial analyst exten‐
66       sion may need to be installed and activated within Arc.
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68       In ArcGIS 9.0 the import tool can be found at:
69       ArcMap -> Toolbox -> Conversion Tools -> To Raster -> ASCII to Raster
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71       A GeoTIFF created with r.out.gdal is sometimes a  better  solution  for
72       transferring raster maps to other GIS software.
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SEE ALSO

75       r.in.arc
76       r.out.gdal
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AUTHOR

79       Markus Neteler, University of Hannover, Germany,
80       based on r.out.ascii written by
81       Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
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83       Last changed: $Date: 2006-12-13 15:21:43 +0100 (Wed, 13 Dec 2006) $
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85       Full index
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87       © 2003-2008 GRASS Development Team
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91GRASS 6.3.0                                                       r.out.arc(1)