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

6       r.out.ascii  - Converts a raster map layer into an ASCII text file.
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KEYWORDS

9       raster, export
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SYNOPSIS

12       r.out.ascii
13       r.out.ascii help
14       r.out.ascii   [-hsmi]   input=string    [output=string]    [dp=integer]
15       [width=integer]   [null=string]   [--verbose]  [--quiet]
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17   Flags:
18       -h
19           Suppress printing of header information
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21       -s
22           Write SURFER (Golden Software) ASCII grid
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24       -m
25           Write MODFLOW (USGS) ASCII array
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27       -i
28           Force output of integer values
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30       --verbose
31           Verbose module output
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33       --quiet
34           Quiet module output
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36   Parameters:
37       input=string
38           Name of an existing raster map
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40       output=string
41           Name for output ASCII grid map (use out=- for stdout)
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43       dp=integer
44           Number of significant digits (floating point only)
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46       width=integer
47           Number of values printed before wrapping a  line  (only  SURFER  or
48           MODFLOW format)
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50       null=string
51           String to represent null cell (GRASS grid only)
52           Default: *
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DESCRIPTION

55       r.out.ascii  converts  a  user-specified  raster map layer (input=name)
56       into an ASCII grid in a text file (output=name) suitable for export  to
57       other computer systems.
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59       The  GRASS  program r.in.ascii can be used to perform the reverse func‐
60       tion, converting an ASCII file in suitable format to GRASS  raster  map
61       format.
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63       To  write  a  SURFER  .grd ASCII GRID file (with reverted row order and
64       different header) use the -s flag:
65       r.out.ascii -s input=inname output=outname.grd [dp=value]
66        NULL data are coded to "1.70141e+038"  for  SURFER  ASCII  GRID  files
67       (ignoring the null= parameter).
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NOTES

70       The output from r.out.ascii may be placed into a file by using the UNIX
71       redirection mechanism; e.g.:
72       r.out.ascii input=soils output=- > out.file
73        The output file out.file can then be printed or copied onto a CDROM or
74       floppy disk for export purposes.
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76       To  export  the  raster values as x,y,z values of cell centers (one per
77       line) use the r.out.xyz module.
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SEE ALSO

80        r.in.ascii, r.in.arc, r.out.bin, r.out.gdal, r.out.xyz
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AUTHOR

83       Michael Shapiro, U.S. Army Construction Engineering Research Laboratory
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85       Surfer support by Markus Neteler
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87       Last changed: $Date: 2006-12-13 15:21:43 +0100 (Wed, 13 Dec 2006) $
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89       Full index
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91       © 2003-2008 GRASS Development Team
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95GRASS 6.3.0                                                     r.out.ascii(1)