r3.cross.rast(1grass)

1r3.cross.rast(1)              Grass User's Manual             r3.cross.rast(1)
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NAME

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

10       raster3d, profile, raster, voxel
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SYNOPSIS

13       r3.cross.rast
14       r3.cross.rast --help
15       r3.cross.rast   [-m]   input=string   elevation=string    output=string
16       [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]
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18   Flags:
19       -m
20           Use 3D raster mask (if exists) with input map
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22       --overwrite
23           Allow output files to overwrite existing files
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25       --help
26           Print usage summary
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28       --verbose
29           Verbose module output
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31       --quiet
32           Quiet module output
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34       --ui
35           Force launching GUI dialog
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37   Parameters:
38       input=string [required]
39           Input 3D raster map for cross section
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41       elevation=string [required]
42           2D elevation map used to create the cross section map
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44       output=string [required]
45           Resulting cross section 2D raster map
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DESCRIPTION

48       This  module  creates  a cross section 2D map from one 3D raster volume
49       map based on a 2D elevation map. It checks if the value of  the  eleva‐
50       tion map is located in the z-coordinate space of the 3D map. If so, the
51       3D voxel value for this position is transferred to  the  related  cross
52       section output map cell, otherwise the NULL value is set.
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54       How r3.cross.rast works
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57       If  the 2D and 3D region settings are different, the 2D resolution will
58       be adjust to the 3D resolution.
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NOTES

61       To create a cut plane elevation map use r.mapcalc. Some examples:
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63           ·   To create a cut plane elevation map in x direction type
64               r.mapcalc "cutplane = col()*x",
65               x be the value for the elevation. If the range of  col()  is  1
66               ...  10, the elevation map has the range 1 ... 10 if x == 1 and
67               if x == 10 the range 10 ... 100
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69           ·   To create a cut plane elevation map in y direction type
70               r.mapcalc "cutplane = row()*x",
71               x be the value for the elevation. If the range of  col()  is  1
72               ...  10, the elevation map has the range 1 ... 10 if x == 1 and
73               if x == 10 the range 10 ... 100
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75           ·   The user can also make a cut in y and x direction  with  r.map‐
76               calc by using
77               r.mapcalc "cutplane = (row()+col())*x"
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EXAMPLE

80   Simple Spearfish example
81       g.region -d
82       g.region res=150 res3=150 t=1000 b=0 tbres=100
83       # synthetic data, could be geological structures:
84       r3.mapcalc "map3d = sin(row())+sin(col())+sin(depth()*depth())"
85       #create a cutplane map
86       r.mapcalc "cutplane = col()*10"
87       #create the cross section map
88       r3.cross.rast input=map3d elevation=cutplane output=crosssection
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AUTHOR

94       Sören Gebbert
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96       Last changed: $Date: 2013-03-26 21:28:19 +0100 (Tue, 26 Mar 2013) $
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SOURCE CODE

99       Available at: r3.cross.rast source code (history)
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101       Main  index | 3D raster index | Topics index | Keywords index | Graphi‐
102       cal index | Full index
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104       © 2003-2019 GRASS Development Team, GRASS GIS 7.4.4 Reference Manual
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108GRASS 7.4.4                                                   r3.cross.rast(1)