NAME¶
r3.mkdspf - Creates a display file from an existing grid3 file
according to specified threshold levels.
KEYWORDS¶
raster3d, voxel
SYNOPSIS¶
r3.mkdspf
r3.mkdspf help
r3.mkdspf [-
qf]
input=
string
dspf=
string [
levels=
float[,
float,...]]
[
min=
float] [
max=
float] [
step=
float]
[
tnum=
integer] [--
verbose] [--
quiet]
Flags:¶
- -q
-
Suppress progress report & min/max information
- -f
-
Use flat shading rather than gradient
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- input=string
-
Name of an existing 3d raster map
- dspf=string
-
Name of 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.
AUTHOR¶
Bill Brown, bbrown@gis.uiuc.edu
Last changed: $Date: 2011-11-08 12:29:50 +0100 (Tue, 08 Nov 2011) $
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