[gdal-dev] OSGeo.OGR.Geometry: Union the mutiple geometries at a time

[jratike80]

Hi,

Please explain what do you mean by "Concave Hull-based union geometry".
Union is union as it is defined in the OpenGIS Simple Features
Implementation Specification for SQL 1.1 standard. There is only one
possible correct result from union. The source code is available if you are
interested in how it is implemented. Also this blog post is good reading.
Unfortunately the images do not show directly on browser, probably because
the links use http instead of https.

-Jukka Rahkonen-


MRRAJESH wrote
> Thanks Even. 
> 
> Whether this algorithm internally use Convex Hull or Concave Hull?
> How to get Concave Hull-based union geometry using GDAL?
> 
> Are these functionalities (ogr.CreateGeometryFromWkt..) available with C#
> bindings?
> 
> Regards,
> Rajesh
> 
> 
> 
> --
> Sent from: http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html
> _______________________________________________
> gdal-dev mailing list

> gdal-dev at .osgeo

> https://lists.osgeo.org/mailman/listinfo/gdal-dev





--
Sent from: http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html