WxGUI Vector Network Analysis Tool: Difference between revisions
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== Video tutorial == | == Video tutorial == | ||
If you want to follow the tutorial on your computer download | If you want to follow the tutorial on your computer download [http://grass.osgeo.org/download/data6.php SPEARFISH] data set and copy directory <tt>spearfish60</tt> into your GIS Data Directory. When launching GRASS choose location <tt>spearfish60</tt> and mapset <tt>user1</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: | 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.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.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 | v.to.db myroads layer=3 qlayer=1 opt=query qcolumn=label columns=label | ||
Revision as of 18:11, 19 August 2012
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.
Installation
1. Install wx.vnet extension via g.extension
g.extension -s extension=wx.vnet
2. Go to Map Display Window and choose 'Vector network analysis' from 'Analyze' menu
Video tutorial
If you want to follow the tutorial on your computer download SPEARFISH data set and copy directory spearfish60 into your GIS Data Directory. When launching GRASS choose location spearfish60 and mapset user1.
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.