WxGUI Vector Network Analysis Tool
Note: This wxGUI extension is available only for GRASS 7.
This tool has been developed within Google Summer of Code 2012, see related wiki page for details.
1. Install wx.vnet extension via
g.extension -s extension=wx.vnet
2. Go to Map Display Window and choose 'Vector network analysis' from 'Analyze' menu
If you want to follow the tutorial on your computer download GRASS 6.x: SPEARFISH data set (available there) and copy folder spearfish60<\tt> into your GIS Data Directory. After launch of GRASS choose location spearfish60<\tt> and mapset PERMANENT<\tt>.
Before you start work with Vector Network Analysis Tool you have to apply these commands in order you will be able to flow tutorial video:
v.category in=roads out=myroads opt=add cat=1 layer=3 type=line
v.db.addtable myroads layer=3 col="cat integer,label varchar(43)"
v.to.db myroads layer=3 qlayer=1 opt=query qcolumn=label columns=label
Now you have created same myroads vector map as is used in the video tutorial.