r.series(1)

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

6       r.series   -  Makes  each  output  cell  value a function of the values
7       assigned to the corresponding cells in the input raster map layers.
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KEYWORDS

10       raster, series
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SYNOPSIS

13       r.series
14       r.series help
15       r.series   [-qn]   input=name[,name,...]   output=name    method=string
16       [--overwrite]  [--verbose]  [--quiet]
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18   Flags:
19       -q
20           Run quietly
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22       -n
23           Propagate NULLs
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25       --overwrite
26           Allow output files to overwrite existing files
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28       --verbose
29           Verbose module output
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31       --quiet
32           Quiet module output
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34   Parameters:
35       input=name[,name,...]
36           Name of input raster map(s)
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38       output=name
39           Name for output raster map
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41       method=string
42           Aggregate operation
43           Options:         average,count,median,mode,minimum,min_raster,maxi‐
44           mum,max_raster,stddev,range,sum,variance,diversity,slope,off‐
45           set,detcoeff,quart1,quart3,perc90
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DESCRIPTION

48       r.series makes each output cell value a function of the values assigned
49       to the corresponding cells in the input raster map  layers.   Following
50       methods are available:
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53                     average: average value
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55                     count: count of non-NULL cells
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57                     median: median value
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59                     mode: most frequently occuring value
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61                     minimum: lowest value
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63                     maximum: highest value
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65                     range: range of values (max - min)
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67                     stddev: standard deviation
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69                     sum: sum of values
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71                     variance: statistical variance
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73                     diversity: number of different values
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75                     slope: linear regression slope
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77                     offset: linear regression offset
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79                     detcoeff: linear regression coefficient of determination
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81                     min_raster:  raster  map  number  with  the minimum time-
82                     series value
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84                     max_raster: raster map  number  with  the  maximum  time-
85                     series value
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NOTES

89       With  -n  flag, any cell for which any of the corresponding input cells
90       are NULL is automatically set to NULL (NULL propagation). The aggregate
91       function  is not called, so all methods behave this way with respect to
92       the -n flag.
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94       Without -n flag, the complete list of inputs for each  cell  (including
95       NULLs)  is  passed to the aggregate function. Individual aggregates can
96       handle data as they choose. Mostly, they  just  compute  the  aggregate
97       over  the  non-NULL  values, producing a NULL result only if all inputs
98       are NULL.
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100       The min_raster and max_raster methods generate a map with the number of
101       the raster map that holds the minimum/maximum value of the time-series.
102       The numbering starts at 0 up to n for the first  and  the  last  raster
103       listed in input=, respectively.
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EXAMPLE

106       Using r.series with wildcards:
107       r.series    input="`g.mlist    pattern='insitu_data.*'   sep=,`"   out‐
108       put=insitu_data.stddev method=stddev
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110       Note the g.mlist script also supports regular expressions for selecting
111       map names.
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AUTHOR

117       Glynn Clements
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119       Last changed: $Date: 2007-10-23 14:11:17 +0200 (Tue, 23 Oct 2007) $
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121       Full index
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123       © 2003-2008 GRASS Development Team
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127GRASS 6.3.0                                                        r.series(1)