[Qgis-user] CenterLines fom a Polygon?

[Andreas Neumann]

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).

Here is also an interesting article on the topic: 
http://ageoguy.blogspot.fi/2010/12/squelettisation.html

Neither one is totally easy and straightforward.

Andreas

On 17.03.2015 16:51, Elstermann, Mike wrote:
>
> Is in QGIS or in a plugin a function to create centerlines in polygons 
> like http://www.ian-ko.com/ET_GeoWizards/UserGuide/createCenterlines.htm?
>
> mikeE.
>
>
>
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> Qgis-user at lists.osgeo.org
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