[Qgis-user] CenterLines fom a Polygon?

[Jukka Rahkonen]

Andreas Neumann <a.neumann at ...> writes:

> 
> 
>     Hi Mike,
>     No - QGIS does not have such functionality, and I also think that
>     GRASS does not have such an algorithm. If you have a fairly new
>     Postgis, you may want to try ST_StraightSkeleton(geometry) - see
>     http://postgis.net/docs/ST_StraightSkeleton.html - which uses CGAL.
>     Seems like OpenJump has a module to do skeletonization (google for
>     skeletonizer).

Some screen captures of the OJ skeletonizer in this gis.stackexchange answer
http://gis.stackexchange.com/questions/114541/extracting-centerline-of-a-complex-polygon-in-postgis-python/114623#114623

-Jukka Rahkonen-