pgr_alphashape is returning a geometry collection?

[Regina Obe]

Can you give us an example you are getting this for?  It should be returning a polygon.

 

From: Alexandre Neto <senhor.neto at gmail.com> 
Sent: Monday, February 5, 2024 7:14 AM
To: PostGIS Users Discussion <postgis-users at lists.osgeo.org>
Subject: pgr_alphashape is returning a geometry collection?

 

I am trying to use pgr_alphashape to convert a set of nodes into a polygon. The documentation description says:

 

Returns the polygon part of an alpha shape.

 

But instead I am getting a geometry_collection instead. I can solve it with st_CollectionExtract, but I m wondering if this is the expected behaviour.

 

Alexandre Neto

 

Sent with  <https://www.shortwave.com?utm_medium=email&utm_content=signature&utm_source=c2VuaG9yLm5ldG9AZ21haWwuY29t> Shortwave 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/postgis-users/attachments/20240205/12bafd22/attachment.htm>