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
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SYNOPSIS

13       r.series
14       r.series help
15       r.series [-qn]  input=string[,string,...]  output=string  method=string
16       [--overwrite]
17
18   Flags:
19       -q  Run quietly
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21       -n  Propagate NULLs
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23       --overwrite
24
25   Parameters:
26       input=string[,string,...]
27           Names of existing raster files
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29       output=string
30           Name of the new raster file
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32       method=string
33           Aggregate    operation   Options:   average,count,median,mode,mini‐
34           mum,min_raster,maximum,max_raster,stddev,sum,variance,diver‐
35           sity,slope,offset,quart1,quart3,perc90
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DESCRIPTION

38       r.series makes each output cell value a function of the values assigned
39       to the corresponding cells in the input raster map  layers.   Following
40       methods are available:
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42
43                     average: average value
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45                     count: count of non-NULL cells
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47                     median: median value
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49                     mode: most frequently occuring value
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51                     minimum: lowest value
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53                     maximum: highest value
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55                     stddev: standard deviation
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57                     sum: sum of values
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59                     variance: statistical variance
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61                     diversity: number of different values
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63                     slope: linear regression slope
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65                     offset: linear regression offset
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67                     min_raster:  raster  map  number  with  the minimum time-
68                     series value
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70                     max_raster: raster map  number  with  the  maximum  time-
71                     series value
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NOTES

75       With  -n  flag, any cell for which any of the corresponding input cells
76       are NULL is automatically set to NULL (NULL propagation). The aggregate
77       function  is not called, so all methods behave this way with respect to
78       the -n flag.
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80       Without -n flag, the complete list of inputs for each  cell  (including
81       NULLs)  is  passed to the aggregate function. Individual aggregates can
82       handle data as they choose. Mostly, they  just  compute  the  aggregate
83       over  the  non-NULL  values, producing a NULL result only if all inputs
84       are NULL.
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86       The min_raster and max_raster methods generate a map with the number of
87       the raster map that holds the minimum/maximum value of the time-series.
88       The numbering starts at 0 up to n for the first  and  the  last  raster
89       listed in input=, respectively.
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EXAMPLE

92       Using r.series with wildcards:
93       r.series    input="`g.mlist    pattern='insitu_data.*'   sep=,`"   out‐
94       put=insitu_data.stddev method=stddev
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96       Note the g.mlist script also supports regular expressions for selecting
97       map names.
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AUTHOR

103       Glynn Clements
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105       Last changed: $Date: 2005/03/14 17:19:54 $
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107       Full index
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111GRASS 6.2.2                                                        r.series(1)