r3.in.ascii - Converts a 3D ASCII raster text file into a (binary) 3D raster map.

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

r3.in.ascii  allows  a  user  to create a (binary) GRASS 3D raster map layer from a 3D ASCII raster input
       file.

       The tiledimension parameter defines the dimension of the tiles used in the output file.  The  format  is:
       XxYxZ

       The  nv  parameter  specifies  which  value to convert to NULL-value.  If the specified value is none, no
       conversion is performed.  Default is none.

       Please refer to the detailed examples in r3.out.ascii.

       raster3d, import, voxel, conversion, ASCII

r3.in.ascii  - Converts a 3D ASCII raster text file into a (binary) 3D raster map.

       The data is automatically imported into the correct internal coordinate system, that is visualized in the
       following picture, independently from the specified ordering in the ASCII input file:
       ThevolumecoordinatesystemandtilelayoutoftheimportedvoxelmapFormat
       The format of the 3D ASCII file:
       version: "grass7"
       order:   "nsbt"or"nstb"or"snbt"or"sntb"
       north:   floatingpoint
       south:   floatingpoint
       east:    floatingpoint
       west:    floatingpoint
       top:     floatingpoint
       bottom:  floatingpoint
       rows:    integer
       cols:    integer
       levels:  integer
       The version and order option have been introduced in GRASS 7 in June 2011.  The version  option  is  self
       explaining.  The  order  option  specifies  the  row  and depth order of the data in the input file.  The
       supported row/depth ordering is documented in the r3.out.ascii manual page. The order of the data in  the
       input  file  does  not  specify the data order in the generated output 3D raster map which is in any case
       north->south,west->east,bottom->top order.  So dependent on the order  information  the  data  is
       automatically imported into the correct internal coordinate system.

       The  version  and  order options are not mandatory. In case no version and order option is specified, the
       default GRASS 6 ASCII format is assumed.

       This header is followed by the cell values in floatingpoint format organized in rows with  constant  col
       and  level  coordinate.   The rows are organized by constant level coordinate. Individual cell values are
       separated by space or CR.

r.in.ascii,r3.out.ascii,v.to.rast3,g.region

       Available at: r3.in.ascii source code (history)

       Accessed: Friday Apr 04 01:20:04 2025

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       © 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

GRASS 8.4.1                                                                                  r3.in.ascii(1grass)

r3.in.asciir3.in.ascii--helpr3.in.asciiinput=nameoutput=name     [null_value=string]     [type=string]     [precision=string]
       [compression=string]   [tiledimension=XxYxZ]   [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]

   Flags:--overwrite
           Allow output files to overwrite existing files

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:input=name[required]
           Name of input file to be imported
           ’-’ for standard input

       output=name[required]
           Name for output 3D raster map

       null_value=string
           String representing NULL value data cell (use ’none’ if no such value)
           Default: *type=string
           Data type used in the output raster3d map
           Options: default,double,float
           Default: defaultprecision=string
           Number of digits used as mantissa in the internal map storage, 0 -23 for float, 0 -  52  for  double,
           max or default
           Default: defaultcompression=string
           The compression method used in the output raster3d map
           Options: default,zip,none
           Default: defaulttiledimension=XxYxZ
           The dimensions of the tiles used in the output raster3d map (XxYxZ or default: 16x16x8)
           Default: default