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)

       Accessed: Saturday Jun 24 10:01:41 2023

       Main index | Wxgui index | Topics index | Keywords index | Graphical index | Full index

       © 2003-2023 GRASS Development Team, GRASS GIS 8.3.0 Reference Manual