1r.li.richness(1)            GRASS GIS User's Manual           r.li.richness(1)
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NAME

6       r.li.richness  - Calculates richness index on a raster map
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KEYWORDS

9       raster, landscape structure analysis, diversity index
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SYNOPSIS

12       r.li.richness
13       r.li.richness --help
14       r.li.richness   input=name   config=name   output=name    [--overwrite]
15       [--help]  [--verbose]  [--quiet]  [--ui]
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17   Flags:
18       --overwrite
19           Allow output files to overwrite existing files
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21       --help
22           Print usage summary
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24       --verbose
25           Verbose module output
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27       --quiet
28           Quiet module output
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30       --ui
31           Force launching GUI dialog
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33   Parameters:
34       input=name [required]
35           Name of input raster map
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37       config=name [required]
38           Configuration file
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40       output=name [required]
41           Name for output raster map
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DESCRIPTION

44       r.li.richness calculates the "richness diversity index" as:
45       with:
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47           •   m: number of different patch types
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NOTES

50       Do not use absolute path names for the config and output  file/map  pa‐
51       rameters.    If   the   "moving   window"   method   was   selected  in
52       g.gui.rlisetup, then the output will be  a  raster  map,  otherwise  an
53       ASCII  file  will  be  generated  in  the  folder  C:\Users\userxy\App‐
54       Data\Roaming\GRASS8\r.li\output\            (MS-Windows)             or
55       $HOME/.grass8/r.li/output/ (GNU/Linux).
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57       If  the  input  raster map contains only NULL values then r.li.richness
58       returns 0.
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EXAMPLES

61       To calculate the richness diversity index on map my_map, using  my_conf
62       configuration  file (previously defined with g.gui.rlisetup) and saving
63       results in my_out, run:
64       r.li.richness input=my_map conf=my_conf output=my_out
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66       Forest map (Spearfish sample dataset) example:
67       g.region raster=landcover.30m -p
68       r.mapcalc "forests = if(landcover.30m >= 41 && landcover.30m <= 43,1,null())"
69       r.li.richness input=forests conf=movwindow7 out=forests_richness_mov7
70       r.univar forests_richness_mov7
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72       Forest map (North Carolina sample dataset) example:
73       g.region raster=landclass96 -p
74       r.mapcalc "forests = if(landclass96 == 5, 1, null() )"
75       r.li.richness input=forests conf=movwindow7 out=forests_richness_mov7
76       # verify
77       r.univar forests_richness_mov7
78       r.to.vect input=forests output=forests type=area
79       d.mon wx0
80       d.rast forests_richness_mov7
81       d.vect forests type=boundary
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SEE ALSO

84        r.li - package overview
85       g.gui.rlisetup
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REFERENCES

88       McGarigal, K., and B. J. Marks. 1995. FRAGSTATS: spatial pattern analy‐
89       sis  program for quantifying landscape structure. USDA For. Serv.  Gen.
90       Tech. Rep. PNW-351. (PDF)
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AUTHORS

93       Serena  Pallecchi  student  of  Computer  Science  University  of  Pisa
94       (Italy).
95       Commission from Faunalia Pontedera (PI), Italy (www.faunalia.it)
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SOURCE CODE

98       Available at: r.li.richness source code (history)
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100       Accessed: Mon Jun 20 16:46:21 2022
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102       Main  index  | Raster index | Topics index | Keywords index | Graphical
103       index | Full index
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105       © 2003-2022 GRASS Development Team, GRASS GIS 8.2.0 Reference Manual
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109GRASS 8.2.0                                                   r.li.richness(1)