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.
8

KEYWORDS

10       raster3d, voxel
11

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]
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18   Flags:
19       -q  Suppress progress report & min/max information
20
21       -f  Use flat shading rather than gradient
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23   Parameters:
24       input=string
25           Name of an existing 3dcell map
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27       dspf=string
28           Name of output display file
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30       levels=float[,float,...]
31           List of thresholds for isosurfaces
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33       min=float
34           Minimum isosurface level
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36       max=float
37           Maximum isosurface level
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39       step=float
40           Positive increment between isosurface levels
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42       tnum=integer
43           Number of isosurface threshold levels Default: 7
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DESCRIPTION

46       Creates  a display file from an existing grid3 file according to speci‐
47       fied threshold levels.  The display file is a display list of  polygons
48       that  represent isosurfaces of the data volume.  If specific levels are
49       given, additional optional parameters are ignored.  Min or max  may  be
50       used  alone  or  together to specify a sub-range of the data.  The step
51       parameter is given precedence over tnum.
52
53   Flags:
54       -q     Suppress progress report & min/max information
55
56       -f     Use flat shading rather than gradient
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58   Parameters:
59       grid3  Name of an existing 3dcell map
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61       dspf   Name of output display file
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63       levels List of thresholds for isosurfaces
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65       min    Minimum isosurface level
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67       max    Maximum isosurface level
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69       step   Positive increment between isosurface levels
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71       tnum   Number of isosurface threshold levels Default: 7
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Example:

74       With grid3 data (phdata) in the range 3-7, we only want to see  isosur‐
75       face  values for the range 4-6.  Any of these commands will produce the
76       same results:
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78       r3.mkdspf phdata dspf=iso min=4.0 max=6.0 tnum=5
79       r3.mkdspf phdata dspf=iso levels=4.0,4.5,5.0,5.5,6.0
80       r3.mkdspf phdata dspf=iso min=4.0 max=6.0 step=0.5
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82

NOTE

84       Currently the grid3 file must be in the user's mapset since the display
85       files being created are specific to particular grid3 files and are con‐
86       tained in directories under them.  We should create a  mechanism  where
87       users may make display files from others' grid3 files without having to
88       copy them to their mapset.
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AUTHOR

91       Bill Brown, bbrown@gis.uiuc.edu
92
93       Last changed: $Date: 2004/06/17 15:04:16 $
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95       Full index
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99GRASS 6.2.2                                                       r3.mkdspf(1)
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