1r.composite(1) Grass User's Manual r.composite(1)
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6 r.composite - Combines red, green and blue map layers into a single
7 composite map layer.
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10 raster
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13 r.composite
14 r.composite help
15 r.composite [-dc] red=string green=string blue=string [levels=integer]
16 [lev_red=integer] [lev_green=integer] [lev_blue=integer] out‐
17 put=string [--overwrite]
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19 Flags:
20 -d Dither
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22 -c Use closest color
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24 --overwrite
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26 Parameters:
27 red=string
28 Name of raster map layer to be used for
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30 green=string
31 Name of raster map layer to be used for
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33 blue=string
34 Name of raster map layer to be used for
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36 levels=integer
37 Number of levels to be used for each component Options: 1-256
38 Default: 32
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40 lev_red=integer
41 Number of levels to be used for Options: 1-256
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43 lev_green=integer
44 Number of levels to be used for Options: 1-256
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46 lev_blue=integer
47 Number of levels to be used for Options: 1-256
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49 output=string
50 Name of raster map to contain results
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53 This program combines three raster map layers to form a composite RGB
54 layer. For each layer, the corresponding component from the layer's
55 color table is used (e.g. for the red layer, the red component is used,
56 and so on). In general, the layers should use a gray-scale color table.
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59 The default number of intensity levels for each component is 32,
60 resulting in a total of 32768 possible colors (equivalent to 15 bits
61 per pixel). If significantly more levels than this are used, not only
62 will r.composite take longer to run, but displaying the resulting layer
63 with d.rast will also be significantly slower.
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65 Floyd-Steinberg dithering is optionally used.
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68 d.rast, d.rgb, r.blend, r.colors
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71 Glynn Clements
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73 Last changed: $Date: 2005/03/01 20:18:14 $
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75 Full index
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79GRASS 6.2.2 r.composite(1)