wxGUI Vector Network Analysis Tool

KEYWORDS

       vector, network, vector

DESCRIPTION

       Vector  Network  Analysis  Tool  is  graphical  front-end  for  v.net* modules. It allows perform network
       analysis directly in wxGUI without need to use command line. The tool can be launched from Layer  Manager
       menu  Vector  → Network analysis → Vector network analysis tool or from Map Display toolbar Analyse map →
       Vector network analysis tool .

       Subsets for nearest centers (v.net.alloc)

       Vector Network Analysis Tool currently allows you to:

           •   perform these network analyses:

               •   Shortest path (v.net.path)

               •   Salesman (v.net.salesman)

               •   Flow (v.net.flow)

               •   Allocate subnets for nearest centers (v.net.alloc)

               •   Steiner tree for the network and given terminals (v.net.distance)

               •   Splits net by cost isolines (v.net.iso)

           •   show and set all data needed for the analysis (points, attribute tables, compute costs)

           •   show analysis results (maps and it’s attribute tables)

           •   snapping to nodes

           •   browse previous analysis results

NOTES

       The tool is split into tabs. Every tab represents some functionality:

       Parameters tab
           It is used for setting vector map and it’s layer on which analysis will be done. Also it is  possible
           to set columns with cost values from attribute table connected to particular layer.

       Points tab
           It manages points, which are used for analysis.

       Output tab
           There is a output console, which shows information about running analysis.

       Input tables tab
           When  existing vector map and it’s existing layers are set in Parameters tab, this tab is dynamically
           added. It shows attribute tables of node and arc layers, which were chosen for analysis. It  is  also
           possible  to  compute cost values in this tab. This can be done by right mouse button click on column
           label. Then from pop-up menu choose Add column, where new column for  cost  values  can  be  created.
           After that by right mouse button click on the added column label can be chosen item Field calculator.
           This tool computes cost values.

       Result tables tab
           The result of vector network analysis is always a vector map. Some vector  network  analysis  results
           can  also include attribute tables. If such a table is connected to the result map, this tab is shown
           and with it you can browse the data.

KNOWN ISSUES

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

SEE ALSO

        wxGUI
       wxGUI components

       See list of vector network modules.

       See also the user wiki page including video tutorial.

AUTHOR

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

SOURCE CODE

       Available at: wxGUI Vector Network Analysis Tool source code (history)

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