1r3.mapcalculator(1) Grass User's Manual r3.mapcalculator(1)
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6 r3.mapcalculator - r3.mapcalculator - Calculates new grid3D volume
7 from r3.mapcalc expression
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11 r3.mapcalculator
12 r3.mapcalculator help
13 r3.mapcalculator [-eo] [agrid=string] [bgrid=string]
14 [cgrid=string] [dgrid=string] [egrid=string] [fgrid=string] for‐
15 mula=string outfile=string [help=string]
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17 Flags:
18 -e Expert mode (enter a set of r3.mapcalc expressions)
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20 -o Don't overwrite existing map
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22 Parameters:
23 agrid=string
24 A (grid3D file):
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26 bgrid=string
27 B (grid3D file):
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29 cgrid=string
30 C (grid3D file):
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32 dgrid=string
33 D (grid3D file):
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35 egrid=string
36 E (grid3D file):
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38 fgrid=string
39 F (grid3D file):
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41 formula=string
42 Formula (e.g. A-B or A*C+B):
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44 outfile=string
45 Resulting output grid3D volume
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47 help=string
48 Show help Options: -,help,man Default: -
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51 r3.mapcalculator Provides a GUI frontend to r3.mapcalc. Up to 5 maps
52 can be combined using simple expressions. Enter an r3.mapcalc expres‐
53 sion in the formula field using the format: A+C or exp(A+C)+(B-2)*7
54 where A, B, C are grid3D volumes entered in the A field, B field, and C
55 field. Do not enter output file in the formula field: correct: A+B;
56 incorrect: newfile = A+B. Use no spaces or blanks. Expert mode runs
57 r.mapcalc for more complex expressions.
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60 r.mapcalc,
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63 Michael Barton, Arizona State University. Based on r.mapcalculator by
64 R. Brunzema (r.brunzema@web.de)
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66 Last changed: $Date: 2004/08/17 20:30:24 $
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68 Full index
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72GRASS 6.2.2 r3.mapcalculator(1)