.TH r.to.rast3elev 1grass "" "GRASS 8.3.2" "GRASS GIS User's Manual"
.SH NAME
\fI\fBr.to.rast3elev\fR\fR  \- Creates a 3D volume map based on 2D elevation and value raster maps.
.SH KEYWORDS
raster, conversion, raster3d, voxel
.SH SYNOPSIS
\fBr.to.rast3elev\fR
.br
\fBr.to.rast3elev \-\-help\fR
.br
\fBr.to.rast3elev\fR [\-\fBulm\fR] \fBinput\fR=\fIname\fR[,\fIname\fR,...] \fBelevation\fR=\fIname\fR[,\fIname\fR,...] \fBoutput\fR=\fIname\fR  [\fBupper\fR=\fIfloat\fR]   [\fBlower\fR=\fIfloat\fR]   [\fBtilesize\fR=\fIinteger\fR]   [\-\-\fBoverwrite\fR]  [\-\-\fBhelp\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR]  [\-\-\fBui\fR]
.SS Flags:
.IP "\fB\-u\fR" 4m
.br
Use the input map values to fill the upper cells
.IP "\fB\-l\fR" 4m
.br
Use the input map values to fill the lower cells
.IP "\fB\-m\fR" 4m
.br
Use 3D raster mask (if exists) with input map
.IP "\fB\-\-overwrite\fR" 4m
.br
Allow output files to overwrite existing files
.IP "\fB\-\-help\fR" 4m
.br
Print usage summary
.IP "\fB\-\-verbose\fR" 4m
.br
Verbose module output
.IP "\fB\-\-quiet\fR" 4m
.br
Quiet module output
.IP "\fB\-\-ui\fR" 4m
.br
Force launching GUI dialog
.SS Parameters:
.IP "\fBinput\fR=\fIname[,\fIname\fR,...]\fR \fB[required]\fR" 4m
.br
Name of input raster map(s)
.IP "\fBelevation\fR=\fIname[,\fIname\fR,...]\fR \fB[required]\fR" 4m
.br
Name of input elevation raster map(s)
.IP "\fBoutput\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name for output 3D raster map
.IP "\fBupper\fR=\fIfloat\fR" 4m
.br
The value to fill the upper cells, default is null
.IP "\fBlower\fR=\fIfloat\fR" 4m
.br
The value to fill the lower cells, default is null
.IP "\fBtilesize\fR=\fIinteger\fR" 4m
.br
The maximum tile size in kilo bytes. Default is 32KB.
.br
Default: \fI32\fR
.SH DESCRIPTION
Creates a 3D volume map based on 2D elevation and value raster maps.
If the 2d and 3d region settings are different,
the 2d resolution will be adjust to the 3d resolution.
.br
.TS
expand;
lw60.
T{
\fIHow r.to.rast3elev works\fR
T}
.sp 1
.TE
.SH NOTES
The height of the 2D elevation maps will be used to verify the position
within the 3D region. If the cell value of the elevation raster maps is located within the 3D region, the
cell value of the appropriate 2D input raster maps will be written to the associated 3D cell.
There are flags and options to fill the upper and lower 3D cells with a specific value, or the
input raster maps values.
.SH EXAMPLES
Simple Spearfish sample data set example
.br
.nf
\fC
g.region raster=elevation.10m \-p
g.region res=200 res3=200 t=2000 b=0 tbres=20 \-p
# Write the values of raster map soils based on the elevation of elevation.10m
# to the 3D map volev
r.to.rast3elev in=soils elev=elevation.10m out=volev
# Write the values of map soils based on the elevation of elevation.10m
# to the 3D map volev_l and fill the lower cells with the soils map values
r.to.rast3elev in=soils elev=elevation.10m out=volev_l \-l
# Write the values of map soils based on the elevation of elevation.10m
# to the 3D map volev_u and fill the upper cells with the soils map values
r.to.rast3elev in=soils elev=elevation.10m out=volev_u \-u
# Example with multiple elevation maps.
## first we need three support maps
r.mapcalc expression=\(dqone = 1\(dq
r.mapcalc expression=\(dqtwo = 2\(dq
r.mapcalc expression=\(dqthree = 3\(dq
## Now we generate the new evelation maps
r.mapcalc expression=\(dqelev_mid = elevation.10m \- 500\(dq
r.mapcalc expression=\(dqelev_bottom = elevation.10m \- 1000\(dq
## Now fill the lower cells below the elevation maps with the values one, two and three
r.to.rast3elev \-l input=one,two,three elevation=elevation.10m,elev_mid,elev_bottom output=threelayer
## Export the map for visualization with paraview (http://www.paraview.org)
## By default the null value is \-9999.99, we adjust it to 0.0 for
## better visualization
r3.out.vtk null=0.0 input=threelayer output=/tmp/threelayer.vtk
# Start paraview
paraview \-\-data=/tmp/threelayer.vtk
# Note: First you need to choose the surface representation style and
# then color by \(dqthreelayer\(dq in paraview.
\fR
.fi
.SH SEE ALSO
\fI
r.to.rast3,
r3.cross.rast,
g.region
\fR
.SH AUTHOR
Soeren Gebbert
.SH SOURCE CODE
.PP
Available at:
r.to.rast3elev source code
(history)
.PP
Accessed: Friday Mar 08 07:34:46 2024
.PP
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.PP
© 2003\-2024
GRASS Development Team,
GRASS GIS 8.3.2 Reference Manual