r3.mkdspf.1grass - Man Page
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
Notes
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.
Examples
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
Author
Bill Brown, bbrown@gis.uiuc.edu
Source Code
Available at: r3.mkdspf source code (history)
Accessed: Tuesday Mar 19 11:02:13 2024
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