1r.mode(1)                     Grass User's Manual                    r.mode(1)
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NAME

6       r.mode  - Finds the mode of values in a cover map within areas assigned
7       the same category value in a user-specified base map.
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KEYWORDS

10       raster
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SYNOPSIS

13       r.mode
14       r.mode help
15       r.mode base=string cover=string output=string  [--overwrite]
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17   Flags:
18       --overwrite
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20   Parameters:
21       base=string
22           Base map to be reclassified
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24       cover=string
25           Coverage map
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27       output=string
28           Output map
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DESCRIPTION

31       r.mode calculates the most frequently occurring value (i. e., mode)  of
32       data  contained in a cover raster map layer for areas assigned the same
33       category value in the user-specified base raster map layer. These modes
34       are stored in the new output map layer.
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36       The output map is actually a reclass of the base map.
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38       The  base  parameter defines an existing raster map layer in the user's
39       current mapset search path. For each group of cells assigned  the  same
40       category  value  in the base map, the mode of the values assigned these
41       cells in the cover map will be computed.
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43       The cover parameter defines an existing raster map layer containing the
44       values  to be used to compute the mode within each category of the base
45       map.
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NOTES

48       The user should use the results of r.mode with care.  Since this  util‐
49       ity  assigns  a value to each cell which is based on global information
50       (i.e., information at spatial locations other than just the location of
51       the  cell  itself),  the  resultant map layer is only valid if the geo‐
52       graphic region and mask settings are the same as they were at the  time
53       that the result map was created.
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55       Results are affected by the current region settings and mask.
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SEE ALSO

58       g.region,  r.average, r.cats, r.clump, r.describe, r.mapcalc, r.median,
59       r.mfilter, r.neighbors, r.reclass, r.stats
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AUTHOR

62       Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
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64       Last changed: $Date: 2006/04/13 19:01:37 $
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66       Full index
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70GRASS 6.2.2                                                          r.mode(1)
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