[gdal-dev] Smoothing polygons

Stephen Woodbridge woodbri at swoodbridge.com
Mon May 12 18:38:09 EDT 2008


Have you considered using a convex hull to merge the results.

-Steve

Clay, Bruce wrote:
> 
> 
> With the help of some folks on this forum I have successfully managed to 
> create polygons that represent the coverage area of a set of geo-data 
> points.  The operation does quite smoothly and fairly fast.  I am don’t 
> to one final operation that I have searched both GDAL/OGR and GEOS API 
> and have not found.
> 
>  
> 
> Before I start coding I wanted to ask if anyone knows of an existing 
> operation that I missed that will smooth the edges and simplify the 
> resultant polygons.  The attached files show the buffered points as 
> overlapping polygons and the final merged polygon.  The merged set is a 
> result of applying a buffer to a GeometryCollection.  If the images make 
> it though the mail filters you can see that the edges of the polygons 
> have a scalloped effect.  If I can smooth the edged it should reduce the 
> stored geometry size.
> 
>  
> 
> Any thoughts would be greatly appreciated.
> 
>  
> 
> Bruce
> 
>  
> 
> This message and any enclosures are intended only for the addressee.  Please  
> notify the sender by email if you are not the intended recipient.  If you are  
> not the intended recipient, you may not use, copy, disclose, or distribute this  
> message or its contents or enclosures to any other person and any such actions  
> may be unlawful.  Ball reserves the right to monitor and review all messages  
> and enclosures sent to or from this email address.
> 
> 
> ------------------------------------------------------------------------
> 
> 
> ------------------------------------------------------------------------
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/gdal-dev



More information about the gdal-dev mailing list