Provided by: grass-doc_6.4.3-3_all bug


       r3.out.ascii  - Converts a 3D raster map layer into an ASCII text file.


       raster3d, voxel, export


       r3.out.ascii help
       r3.out.ascii    [-hm]   input=string    [output=string]     [dp=integer]     [null=string]
       [--verbose]  [--quiet]

           Suppress printing of header information

           Use 3D raster mask (if exists) with input map

           Verbose module output

           Quiet module output

           3D raster map to be converted to ASCII

           Name for ASCII output file

           Number of decimal places for floats
           Options: 0-20
           Default: 8

           Char string to represent no data cell
           Default: *


       Outputs 3D raster maps in ASCII format. The map parameter is a valid 3D raster map in  the
       current  mapset  search path. The output parameter is the name of an ASCII file which will
       be written in the current working directory.

       If output is not specified then standard output (stdout) is used.  The -h flag may be used
       to  suppress  header  information.  The  module  is sensitive to region settings (set with


       The default format for the ASCII file is equivalent to that required  by  In
       particular,  files output by r3.out.ascii with header information may be converted back to
       3D raster maps with

       The format of the ASCII file is:
       north:   floating point
       south:   floating point
       east:    floating point
       west:    floating point
       top:     floating point
       bottom:  floating point
       rows:    integer
       cols:    integer
       levels:  integer
        The header is followed by cell values in floating point format.  Cell values  are  output
       as a series of horizontal slices in row-major order.  That is,
         (x, y, z)       (x + 1, y, z)     ...     (x + cols, y, z)
       (x, y + 1, z)   (x + 1, y + 1, z)   ...   (x + cols, y + 1, z)
       and so on.

       One level maps can be imported with (2D raster) after removing the header lines
       "top", "bottom" and "levels".

SEE ALSO, g.region


       Roman Waupotitsch, Michael  Shapiro,  Helena  Mitasova,  Bill  Brown,  Lubos  Mitas,  Jaro

       Last changed: $Date: 2011-09-13 13:13:36 -0700 (Tue, 13 Sep 2011) $

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