r3.mkdspf(1grass)

NAME

   r3.mkdspf   -  Creates  a  display  file from an existing 3D raster map
   according to specified threshold levels.

KEYWORDS

   raster3d, display, voxel

SYNOPSIS

   r3.mkdspf
   r3.mkdspf --help
   r3.mkdspf  [-qf]  input=string  dspf=name    [levels=float[,float,...]]
   [min=float]        [max=float]        [step=float]       [tnum=integer]
   [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]

   Flags:
   -q
       Suppress progress report & min/max information

   -f
       Use flat shading rather than gradient

   --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=string [required]
       Name of an existing 3D raster map

   dspf=name [required]
       Name for output display file

   levels=float[,float,...]
       List of thresholds for isosurfaces

   min=float
       Minimum isosurface level

   max=float
       Maximum isosurface level

   step=float
       Positive increment between isosurface levels

   tnum=integer
       Number of isosurface threshold levels
       Default: 7

DESCRIPTION

   Creates a display  file  from  an  existing  grid3  file  according  to
   specified  threshold  levels.   The  display  file is a display list of
   polygons that represent isosurfaces of the data  volume.   If  specific
   levels  are  given, additional optional parameters are ignored.  Min or
   max may be used alone or together to specify a sub-range of  the  data.
   The step parameter is given precedence over tnum.

   Flags:
   -q
       Suppress progress report & min/max information

   -f
       Use flat shading rather than gradient

   Parameters:
   grid3
       Name of an existing 3D raster map

   dspf
       Name of output display file

   levels
       List of thresholds for isosurfaces

   min
       Minimum isosurface level

   max
       Maximum isosurface level

   step
       Positive increment between isosurface levels

   tnum
       Number of isosurface threshold levels
       Default: 7

Example:

   With  grid3  data  (phdata)  in  the  range  3-7,  we  only want to see
   isosurface values for the  range  4-6.   Any  of  these  commands  will
   produce the same results:
   r3.mkdspf phdata dspf=iso min=4.0 max=6.0 tnum=5
   r3.mkdspf phdata dspf=iso levels=4.0,4.5,5.0,5.5,6.0
   r3.mkdspf phdata dspf=iso min=4.0 max=6.0 step=0.5

NOTE

   Currently the grid3 file must be in the user's mapset since the display
   files being created are specific to  particular  grid3  files  and  are
   contained  in  directories  under  them.   We should create a mechanism
   where users may make display files from  others'  grid3  files  without
   having to copy them to their mapset.

AUTHOR

   Bill Brown, [email protected]

   Last changed: $Date: 2014-12-12 00:12:46 +0100 (Fri, 12 Dec 2014) $

SOURCE CODE

   Available at: r3.mkdspf source code (history)

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    2003-2016 GRASS Development Team, GRASS GIS 7.2.0 Reference Manual

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