1wxGUI.rlisetup(1) GRASS GIS User's Manual wxGUI.rlisetup(1)
2
7 The g.gui.rlisetup is a wxGUI component which allows the user to create
8 a configuration file for the analytical r.li modules. For a general
9 introduction, see the r.li overview.
10 The configurations are raster map independent, it means that you can
11 use a file created on a raster map for analyze any other you have.
12 The program is completely interactive and uses a GUI to help you in
13 your choices.
14 Analysis methods
16 Definition of creation of sampling area:
17 · Whole map layer: use entire area selected above,
19 · Regions: select one to many subareas via mouse,
21 · Sample units: automated selection of sampling area (for details
23 see below)
24 · Random nonoverlapping,
26 · Systematic contiguous,
28 · Systematic noncontiguous,
30 · Stratified random,
32 · Centered over sites (vector points).
34 · Moving window: rectangular or circular with size
36 Definition of region for analysis:
38 · Whole map layer: entire map (current region),
40 · Keyboard setting: based on keyboard selection for region defi‐
42 nition,
43 · Draw the sampling frame: based on interactive region selection
45 via mouse.
46 Usage details
48 The startup window shows your configuration files, you can:
49 TODO: description below needs further updates
51 1 View/Edit (Load a file) from the shown list: the configuration
53 is shown in a small text editor window. Configuration files are
54 saved in the folder C:\Users\userxy\AppData\Roaming\GRASS7\r.li\
55 (MS-Windows) or $HOME/.r.li/ (GNU/Linux) (the file name can be
56 defined by the user). The output or an analysis can either be a
57 new raster map (in case of using a "moving window" analysis) or
58 be an ASCII text file (when not performing a "moving window"
59 analysis) containing the result. Such text file will be saved
60 in the folder C:\Users\userxy\AppData\Roaming\GRASS7\r.li\out‐
61 put\ (MS-Windows) or $HOME/.grass7/r.li/output/ (GNU/Linux).
62 All dimensions are percentages of raster rows or columns.
63 2 Create a new configuration file: used for creating a new config‐
65 uration file in an interactive way, in three steps:
66 2.1 Choose file name and maps to use for setting:
68 · Name for new configuration file(required): the name of new con‐
70 figuration file
71 · Raster map name to use to select areas (required): the name of
73 raster map used for selecting sampling areas
74 · Vector map to overlay (optional): name of a vector map used for
76 selecting sampling areas
77 2.2 Set the sampling frame. The sample frame is a rectangular area
79 which contains all the areas to analyze. It can be defined in
80 three ways:
81 · Whole map layer: the sample frame is the whole map
83 · Keyboard setting: the user enters the coordinates in cells of
85 upper left corner of sampling frame and its length in rows and
86 columns.
87 · Draw the sample frame: the user draws the sample frame on map
89 using mouse.
90 2.3 Set the sample areas. The sample areas are simply the areas to
92 analyze. They can be defined in five ways (see the picture
93 below):
94 · Whole map layer: the sample area is the whole sample frame
96 · Regions: the user enters the number of areas and then draws
98 them using mouse.
99 · Sample units: they are areas of rectangular or circular shape.
101 The user can define them using keyboard or mouse.
102 · keyboard: the user define the shape of sample unists and
104 their disposition:
105 · Random non overlapping: the user specifies the number
107 of sample units and they are placed in a random way at
108 runtime. It is guaranteed that the areas do not inter‐
109 sect themselves.
110 · Systematic contiguous: the defined sample is placed
112 covering the sample frame, side by side across rows.
113 · Systematic non contiguous: the same as above, but here
115 ever rectangle is spaced from another by a specified
116 number of cells.
117 · Stratified random: the sample frame is divided in n
119 strats of rows and m strats of columns (n and m are
120 given by user), then the specified number of sample
121 areas are placed in a random way, one for every m*n
122 areas defined by strats.
123 · Centered over sites: the sample areas are placed into
125 sample frame centering them on points in site file.
126 · mouse: the user chooses the shape and then draws the speci‐
128 fied number of sample areas on map.
129 · Moving Window: the user defines a rectangular or circular area,
131 it is moved over all the raster increasing only of a cell for
132 every move(in columns if possible, if not in rows). It pro‐
133 duces a new raster containing the result of all analysis.
134 · Select areas from the overlaid vector map: the sample areas are
136 defined by the vector map selected above. For every cat in
137 vector map, the procedure prompts the user if they want to
138 include it as sample area. The resulting configuration file
139 can be used only with the specified raster map, and the proce‐
140 dure can be used only if whole map layer is selected as sam‐
141 pling frame.
142 3 Remove a file the selected file is deleted from the available
144 configuration files.
145 4 Help: open this help text.
147 5 Close module window.
149
151 Configuration files are raster map independent because areas are saved
152 using relative coordinates.
153 Screenshots of the wizard window frames:
155  g.gui.rlisetup: First frame of wizard for selecting  g.gui.rlisetup: Frame for selecting maps
157 existing configuration files or creating a new one
158  g.gui.rlisetup: Frame for inserting sampling areas  g.gui.rlisetup: Frame for defining rectangular moving
160 window
161  g.gui.rlisetup: Frame for defining circular moving window  g.gui.rlisetup: Frame for choosing the sampling frame
163 with keyboard
164  g.gui.rlisetup: Frame for drawing the sampling frame  g.gui.rlisetup: Summary frame before saving
166
169 Moving window analysis on full region
170 TODO: update examples to new g.gui.rlisetup dialog:
171 Example for a 7x7 moving window analysis on full region, the output is
173 a raster map:
174 Click on "New", then:
176 · Configuration file name: "movwindow7"
178 · Raster map name to use to select areas: "forests"
180 1. Setup sampling frame:
181 · Define a sampling frame (region for analysis): "Whole map
183 layer", then "OK"
184 2. Setup sampling frame
185 · Define sampling areas: "Moving window", then "OK"
187 · Then click on "Use keyboard to define moving window dimension"
189 Select type of shape:
190 · [x] Rectangular
192 · Width size (in cells)?: "7"
194 · Height size (in cells)?: "7"
196 · Then "Save settings"
198 3. Save settings: click on button
199 (4.) Close
200 Now an anaysis can be performed using one of the analytical modules,
202 e.g.
203 g.region raster=forests -p
204 r.li.patchdensity input=forests conf=movwindow7 output=forests_p_dens7
205 r.univar forests_p_dens7
206 The result is the new raster map "forests_p_dens7" which shows (in this
207 example) the patch density of the forest areas.
208 See the respective modules for further examples.
209 Whole region analysis
211 Example for a whole region analysis, the output is a text file: Click
212 on "New", then:
213 · Configuration file name: "whole_region"
215 · Raster map name to use to select areas: "lsat7_2000_40"
217 1. Setup sampling frame:
218 · Define a sampling frame (region for analysis): "Whole map
220 layer", then "OK"
221 2. Setup sampling frame
222 · Define sampling areas: "Whole map layer", then "OK"
224 3. Save settings: click on button
225 (4.) Close
226 Now an anaysis can be performed using one of the analytical modules,
228 e.g.
229 g.region raster=lsat7_2002_40 -p
230 r.li.shannon input=lsat7_2000_40 conf=whole_region output=lsat7_2000_40_shannon
231 The result is the new text file "forests_p_dens7" (stored in folder
232 $HOME/.r.li/output/.
233 See the respective modules for further examples.
234
236 r.li - package overview
237 r.li.daemon
238 Old r.le suite manual [4m(1992)
240 wxGUI
242 wxGUI components
243
245 McGarigal, K., and B. J. Marks. 1995. FRAGSTATS: spatial pattern analy‐
246 sis program for quantifying landscape structure. USDA For. Serv. Gen.
247 Tech. Rep. PNW-351. (PDF)
248
250 Luca Delucchi
251 Rewritten from r.li.setup by Claudio Porta and Lucio Davide Spano
252
254 Available at: wxGUI RLi Setup source code (history)
255 Main index | GUI index | Topics index | Keywords index | Graphical
257 index | Full index
258 © 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual
260GRASS 7.8.5 wxGUI.rlisetup(1)