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Re: GeomUnion returns a Null geometry

by Markus Schaber-7 :: Rate this Message:

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HI, Arnaud,

Arnaud Lesauvage wrote:

> I join to this message a csv of the problematic dataset.

> gid;geom
> 100013;MULTIPOLYGON((([...])))
> ;
> ;
> ;
> ;

Sounds like only the first of your five polygons was output.

Could the others be null?

Could you give us the results of

SELECT gid;geom is null;isvalid(geom) FROM yourtable;

Thanks,
Markus

--
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf. | Software Development GIS

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« Return to Thread: How to identify start node and end node in shortest_path_astar when the user click 2 points on the map?