This is the command r3.mkdspfgrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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.
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