[postgis-users] Is there a better way for Finding Gaps/Sliver Holes?

[Shaozhong SHI]

On Mon, 2 May 2022 at 13:39, Lars Aksel Opsahl <Lars.Opsahl at nibio.no> wrote:

> >From: postgis-users <postgis-users-bounces at lists.osgeo.org> on behalf of
> Shaozhong SHI <shishaozhong at gmail.com>
> >Sent: Monday, May 2, 2022 12:22 PM
> >To: PostGIS Users Discussion <postgis-users at lists.osgeo.org>
> >Subject: [postgis-users] Is there a better way for Finding Gaps/Sliver
> Holes?
> >
> >This solution does not appear to be well explained.
> >
> >Find Topology Error With PostGIS (khairu-aqsara.net)
> >
> >Has anyone tested it?
> >
> >Is there a better way for Finding Gaps/Sliver Holes?
> >
> >Regards,
> >
> >David
>
> Hi
>
> At https://github.com/larsop/find-overlap-and-gap
> we have code that checks for overlaps and gaps on simple feature polygons
> and creates a spatial tables with the results. We have used this code on
> tables  with millions  of rows.
>
> And yes we see gaps/overlap as polygons, lines and points .
>
> Lars
> _______________________________________________
> postgis-users mailing list
> postgis-users at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/postgis-users



Hi, Lars,

This is a mixture of codes for parallel processing and finding overlaps and
gaps.

At the moment, what I am looking for is the steps and codes just for
finding overlaps and gaps, namely the computational logic and codes.

It is very hard to find these in all these codes.

Regards,

David
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/postgis-users/attachments/20220502/6f17ad61/attachment.htm>