centre line of road polygon
Posted 17 May 2011 - 11:52 PM
Posted 18 May 2011 - 12:19 AM
i am new in GIS, as i have road polygons and i want to make the centre line of each polygons. i dont know what i would do?could you help me
The CenterLineReplacer in FME does that, though it might get confused at complex intersections.
Email: firstname.lastname@example.org / Twitter: @redgeographics
Posted 18 May 2011 - 01:38 PM
Posted 25 May 2011 - 05:51 PM
I would suggest converting lines to points and then generate Thiessen polygons (ArcInfo license required). The resulting triangle form a line that is the center of the polygons.
Here is an example from a river, but it is the same technique.
cl.jpg 209.16KB 66 downloads
Posted 27 May 2011 - 12:37 PM
If you are using ArcGIS try "Feature to Line" in the Data Management-->Features Toolbox.
This used to work at version 9.X, but it doesn't with 'improved' functionality at version 10.
Posted 27 May 2011 - 05:51 PM
If you are looking for a pushbutton solution I would get Ianko's ET-GeoWizards.
co-cartographic creator of boringmaps.com
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