1r.stats(1) Grass User's Manual r.stats(1)
2
6 r.stats - Generates area statistics for raster map.
7
9 raster, statistics
10
12 r.stats
13 r.stats --help
14 r.stats [-acpl1gxArnNCi] input=name[,name,...] [output=name] [sepa‐
15 rator=character] [null_value=string] [nsteps=integer]
16 [sort=string] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
17 Flags:
19 -a
20 Print area totals in square meters
21 -c
23 Print cell counts (sortable)
24 -p
26 Print approximate (total percent may not be 100%) percents
27 -l
29 Print category labels
30 -1
32 One cell (range) per line
33 -g
35 Print grid coordinates (east and north)
36 -x
38 Print x and y (column and row)
39 -A
41 Print averaged values instead of intervals (floating-point maps
42 only)
43 -r
45 Print raw indexes of floating-point ranges (floating-point maps
46 only)
47 -n
49 Do not report no data value
50 -N
52 Do not report cells where all maps have no data
53 -C
55 Report for cats floating-point ranges (floating-point maps only)
56 -i
58 Read floating-point map as integer (use map’s quant rules)
59 --overwrite
61 Allow output files to overwrite existing files
62 --help
64 Print usage summary
65 --verbose
67 Verbose module output
68 --quiet
70 Quiet module output
71 --ui
73 Force launching GUI dialog
74 Parameters:
76 input=name[,name,...] [required]
77 Name of raster map(s) to report on
78 output=name
80 Name for output file (if omitted or "-" output to stdout)
81 separator=character
83 Field separator
84 Special characters: pipe, comma, space, tab, newline
85 Default: space
86 null_value=string
88 String representing NULL value
89 Default: *
90 nsteps=integer
92 Number of floating-point subranges to collect stats from
93 Default: 255
94 sort=string
96 Sort output statistics by cell counts
97 Default: sorted by categories or intervals
98 Options: asc, desc
99 asc: Sort by cell counts in ascending order
100 desc: Sort by cell counts in descending order
101
103 r.stats calculates the area present in each of the categories or float‐
104 ing-point intervals of user-selected input raster map. Area statistics
105 are given in units of square meters and/or cell counts. This analysis
106 uses the current geographic region (g.region) and mask settings
107 (r.mask). The output statistics can be saved to a output file.
108 Area statistics is printed in square meters for each category when -a
110 is given. Similarly if -c flag is chosen, areas will be stated also in
111 number of cells.
112
114 If a single raster map is specified, a list of categories will be
115 printed. If multiple raster maps are specified, a cross-tabulation ta‐
116 ble for each combination of categories in the raster maps will be
117 printed.
118 For example, if one raster map was specified, the output would look
120 like:
121 1 1350000.00
122 2 4940000.00
123 3 8870000.00
124 If three raster maps were specified, the output would look like:
125 0 0 0 8027500.00
126 0 1 0 1152500.00
127 1 0 0 164227500.00
128 1 0 1 2177500.00
129 1 1 0 140092500.00
130 1 1 1 3355000.00
131 2 0 0 31277500.00
132 2 0 1 2490000.00
133 2 1 0 24207500.00
134 2 1 1 1752500.00
135 3 0 0 17140000.00
136 3 1 0 11270000.00
137 3 1 1 2500.00
138 Within each grouping, the first field represents the category value of
139 first raster map, the second represents the category values associated
140 with second raster map, the third represents category values for third
141 raster map, and the last field gives the area in square meters for the
142 particular combination of these three raster maps’ categories. For
143 example, above, combination 3,1,1 covered 2500 square meters. Fields
144 are separated by the separator option. The output from r.stats is
145 sorted by category or category intervals (for floating-point raster
146 maps).
147 Note that the user has only the option of printing out cell statistics
149 in terms of cell counts and/or area totals. Users wishing to use dif‐
150 ferent units than are available here should use r.report.
151
153 Report area for each category in the single raster map:
154 r.stats -a in=geology_30m nv=no-data sep=tab
155 217 71960000.000000
156 262 19760000.000000
157 270 67760000.000000
158 405 25120000.000000
159 583 2520000.000000
160 720 480000.000000
161 766 840000.000000
162 862 6560000.000000
163 910 4360000.000000
164 921 1200000.000000
165 946 360000.000000
166 948 80000.000000
167 no-data 33375200000.000004
168 Report sorted number of cells for each category in the single raster
169 map (suppress NULL data):
170 r.stats -cn in=geology_30m sort=desc
171 217 1799
172 270 1694
173 405 628
174 262 494
175 862 164
176 910 109
177 583 63
178 921 30
179 766 21
180 720 12
181 946 9
182 948 2
183 Report area, number of cells, and percents (separated by tabs) for each
184 category in the multiple raster maps (suppress NULL data):
185 r.stats -nacp in=towns,urban sep=tab
186 1 55 23840000.000000 596 11.89%
187 2 55 13680000.000000 342 6.82%
188 3 55 1360000.000000 34 0.68%
189 4 55 16040000.000000 401 8.00%
190 5 55 98240000.000000 2456 48.98%
191 6 55 19760000.000000 494 9.85%
192 Report sorted area for each interval of floating-point input raster
193 map. Number of intervals are given by nsteps option.
194 r.stats -an in=elevation nsteps=10 sort=desc sep=tab
195 95.879221-105.954329 36440000.000000
196 85.804114-95.879221 30800000.000000
197 105.954329-116.029436 30080000.000000
198 116.029436-126.104543 27960000.000000
199 126.104543-136.17965 26440000.000000
200 136.17965-146.254757 20880000.000000
201 75.729007-85.804114 15880000.000000
202 65.6539-75.729007 6040000.000000
203 146.254757-156.329865 5720000.000000
204 55.578793-65.6539 760000.000000
205
207 g.region, r.report, r.coin, r.describe, r.stats.quantile,
208 r.stats.zonal, r.statistics, r.univar
209
211 Michael Shapiro, U.S. Army Construction Engineering Research Laboratory
212 Sort option by Martin Landa, Czech Technical University in Prague, 2013
213 Last changed: $Date: 2014-12-12 00:12:46 +0100 (Fri, 12 Dec 2014) $
215
217 Available at: r.stats source code (history)
218 Main index | Raster index | Topics index | Keywords index | Graphical
220 index | Full index
221 © 2003-2019 GRASS Development Team, GRASS GIS 7.6.0 Reference Manual
223GRASS 7.6.0 r.stats(1)