1r3.mkdspf(1)                  Grass User's Manual                 r3.mkdspf(1)
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NAME

6       r3.mkdspf  - Creates a display file from an existing grid3 file accord‐
7       ing to specified threshold levels.
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KEYWORDS

10       raster3d, voxel
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SYNOPSIS

13       r3.mkdspf
14       r3.mkdspf help
15       r3.mkdspf [-qf]  input=string  dspf=string   [levels=float[,float,...]]
16       [min=float]   [max=float]   [step=float]   [tnum=integer]   [--verbose]
17       [--quiet]
18
19   Flags:
20       -q
21           Suppress progress report & min/max information
22
23       -f
24           Use flat shading rather than gradient
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26       --verbose
27           Verbose module output
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29       --quiet
30           Quiet module output
31
32   Parameters:
33       input=string
34           Name of an existing 3d raster map
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36       dspf=string
37           Name of output display file
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39       levels=float[,float,...]
40           List of thresholds for isosurfaces
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42       min=float
43           Minimum isosurface level
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45       max=float
46           Maximum isosurface level
47
48       step=float
49           Positive increment between isosurface levels
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51       tnum=integer
52           Number of isosurface threshold levels
53           Default: 7
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DESCRIPTION

56       Creates a display file from an existing grid3 file according to  speci‐
57       fied  threshold levels.  The display file is a display list of polygons
58       that represent isosurfaces of the data volume.  If specific levels  are
59       given,  additional  optional parameters are ignored.  Min or max may be
60       used alone or together to specify a sub-range of the  data.   The  step
61       parameter is given precedence over tnum.
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63   Flags:
64       -q
65              Suppress progress report & min/max information
66
67       -f
68              Use flat shading rather than gradient
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70   Parameters:
71       grid3
72              Name of an existing 3d raster map
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74       dspf
75              Name of output display file
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77       levels
78              List of thresholds for isosurfaces
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80       min
81              Minimum isosurface level
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83       max
84              Maximum isosurface level
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86       step
87              Positive increment between isosurface levels
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89       tnum
90              Number of isosurface threshold levels
91              Default: 7
92

Example:

94       With  grid3 data (phdata) in the range 3-7, we only want to see isosur‐
95       face values for the range 4-6.  Any of these commands will produce  the
96       same results:
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98       r3.mkdspf phdata dspf=iso min=4.0 max=6.0 tnum=5
99       r3.mkdspf phdata dspf=iso levels=4.0,4.5,5.0,5.5,6.0
100       r3.mkdspf phdata dspf=iso min=4.0 max=6.0 step=0.5
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102

NOTE

104       Currently the grid3 file must be in the user's mapset since the display
105       files being created are specific to particular grid3 files and are con‐
106       tained  in  directories under them.  We should create a mechanism where
107       users may make display files from others' grid3 files without having to
108       copy them to their mapset.
109

AUTHOR

111       Bill Brown, bbrown@gis.uiuc.edu
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113       Last changed: $Date: 2006-12-21 15:27:27 +0100 (Thu, 21 Dec 2006) $
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115       Full index
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117       © 2003-2008 GRASS Development Team
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121GRASS 6.3.0                                                       r3.mkdspf(1)
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