wxGUI Vector Network Analysis Tool
Vector Network Analysis Tool
is graphical front-end
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
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:
- 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
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
- 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.
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 list of vector network modules.
See also the
page including video tutorial.
Summer of Code 2012
(mentor: Martin Landa)
wxGUI Vector Network Analysis Tool source code
Latest change: Thursday May 18 09:47:05 2023 in commit: 97e33d78c95dc2721b357ecf0a2c65294bf57527
Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
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