r3.cross.rast - Creates cross section 2D raster map from 3D raster map based on 2D elevation map

       Sören Gebbert

r3.cross.rast creates a cross section 2D map from one 3D raster volume map based on a 2D  elevation  map.
       It  checks  if  the value of the elevation map is located in the z-coordinate space of the 3D map. If so,
       the 3D voxel value for this position is transferred  to  the  related  cross  section  output  map  cell,
       otherwise the NULL value is set.
       Howr3.cross.rastworks

       If the 2D and 3D region settings are different, the 2D resolution will be adjust to the 3D resolution.

SimpleSpearfishexample
       g.region -d
       g.region res=150 res3=150 t=1000 b=0 tbres=100
       # synthetic data, could be geological structures:
       r3.mapcalc "map3d = sin(row())+sin(col())+sin(depth()*depth())"
       #create a cutplane map
       r.mapcalc "cutplane = col()*10"
       #create the cross section map
       r3.cross.rast input=map3d elevation=cutplane output=crosssection

       raster3d, profile, raster, voxel

r3.cross.rast  - Creates cross section 2D raster map from 3D raster map based on 2D elevation map

       To create a cut plane elevation map use r.mapcalc. Some examples:

           •   To create a cut plane elevation map in x direction type
               r.mapcalc"cutplane=col()*x",
               x  be  the  value for the elevation. If the range of col() is 1 ... 10, the elevation map has the
               range 1 ... 10 if x == 1 and if x == 10 the range 10 ... 100

           •   To create a cut plane elevation map in y direction type
               r.mapcalc"cutplane=row()*x",
               x be the value for the elevation. If the range of col() is 1 ... 10, the elevation  map  has  the
               range 1 ... 10 if x == 1 and if x == 10 the range 10 ... 100

           •   The user can also make a cut in y and x direction with r.mapcalc by using
               r.mapcalc"cutplane=(row()+col())*x"

g.region,r.mapcalc,r3.mapcalc,r3.to.rast

       Available at: r3.cross.rast source code (history)

       Accessed: Friday Apr 04 01:20:03 2025

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

GRASS 8.4.1                                                                                r3.cross.rast(1grass)

r3.cross.rastr3.cross.rast--helpr3.cross.rast  [-m]  input=stringelevation=stringoutput=string   [--overwrite]  [--help]  [--verbose]
       [--quiet]  [--ui]

   Flags:-m
           Use 3D raster mask (if exists) with input map

       --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]
           Input 3D raster map for cross section

       elevation=string[required]
           2D elevation map used to create the cross section map

       output=string[required]
           Resulting cross section 2D raster map