1wxGUI.vnet(1) GRASS GIS User's Manual wxGUI.vnet(1)
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7 vector, network, vector
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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 â Network analysis â Vector network analysis tool or from Map
14 Display toolbar Analyse map â 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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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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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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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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90 Stepan Turek, Google Summer of Code 2012 (mentor: Martin Landa)
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93 Available at: wxGUI Vector Network Analysis Tool source code (history)
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95 Accessed: Fri Jun 3 13:27:06 2022
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97 Main index | Wxgui index | Topics index | Keywords index | Graphical
98 index | Full index
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100 © 2003-2022 GRASS Development Team, GRASS GIS 8.2.0 Reference Manual
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104GRASS 8.2.0 wxGUI.vnet(1)