1wxGUI.vnet(1)               GRASS GIS User's Manual              wxGUI.vnet(1)
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wxGUI Vector Network Analysis Tool

KEYWORDS

7       vector, network, vector
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DESCRIPTION

10       Vector Network Analysis Tool is graphical front-end for v.net* modules.
11       It allows perform network analysis directly in wxGUI  without  need  to
12       use command line. The tool can be launched from Layer Manager menu Vec‐
13       tor → Network analysis → Vector network analysis tool or  from  Map
14       Display toolbar Analyse map → Vector network analysis tool .
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16       Subsets for nearest centers (v.net.alloc)
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18       Vector Network Analysis Tool currently allows you to:
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20           •   perform these network analyses:
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22               •   Shortest path (v.net.path)
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24               •   Salesman (v.net.salesman)
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26               •   Flow (v.net.flow)
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28               •   Allocate subnets for nearest centers (v.net.alloc)
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30               •   Steiner   tree   for   the   network  and  given  terminals
31                   (v.net.distance)
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33               •   Splits net by cost isolines (v.net.iso)
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35           •   show and set all data needed for the analysis  (points,  attri‐
36               bute tables, compute costs)
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38           •   show analysis results (maps and it’s attribute tables)
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40           •   snapping to nodes
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42           •   browse previous analysis results
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NOTES

45       The tool is split into tabs. Every tab represents some functionality:
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47       Parameters tab
48           It  is used for setting vector map and it’s layer on which analysis
49           will be done. Also it is possible to set columns with  cost  values
50           from attribute table connected to particular layer.
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52       Points tab
53           It manages points, which are used for analysis.
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55       Output tab
56           There  is  a  output console, which shows information about running
57           analysis.
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59       Input tables tab
60           When existing vector map and it’s existing layers are set in Param‐
61           eters tab, this tab is dynamically added. It shows attribute tables
62           of node and arc layers, which were chosen for analysis. It is  also
63           possible  to  compute  cost values in this tab. This can be done by
64           right mouse button click on column label.  Then  from  pop-up  menu
65           choose Add column, where new column for cost values can be created.
66           After that by right mouse button click on the  added  column  label
67           can  be  chosen item Field calculator. This tool computes cost val‐
68           ues.
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70       Result tables tab
71           The result of vector network analysis is always a vector map.  Some
72           vector  network analysis results can also include attribute tables.
73           If such a table is connected to the result map, this tab  is  shown
74           and with it you can browse the data.
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KNOWN ISSUES

77       When some change is done in layer tree of Map Display, temporary vector
78       map representing result of analysis is not rendered  (use  Show  result
79       button in toolbar to render it again).
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SEE ALSO

82        wxGUI
83       wxGUI components
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85       See list of vector network modules.
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87       See also the user wiki page including video tutorial.
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AUTHOR

90       Stepan Turek, Google Summer of Code 2012 (mentor: Martin Landa)
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SOURCE CODE

93       Available at: wxGUI Vector Network Analysis Tool source code (history)
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95       Accessed: Saturday Jan 21 17:40:37 2023
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97       Main  index  |  Wxgui index | Topics index | Keywords index | Graphical
98       index | Full index
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100       © 2003-2023 GRASS Development Team, GRASS GIS 8.2.1 Reference Manual
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104GRASS 8.2.1                                                      wxGUI.vnet(1)
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