Spatial join issues

[Shaozhong SHI]

This is very challenging.  Take my words for it.  Try on any polygons you
created and modified.

On Wed, 29 Oct 2025 at 14:36, Greg Troxel <gdt at lexort.com> wrote:

> Shaozhong SHI <shishaozhong at gmail.com> writes:
>
> >   Visually, there appears some matching polygons.  Even if two geometries
> > represent the same shape visually, they might not be considered equal due
> > to tiny differences in precision or metadata.  Have you encountered
> > problems of failure of spatial join?  How did you overcome the problems?
> > Regards, David
>
> Could you post your example polygons, and the queries you are using?
> Your question is much too open ended.  It even sounds like it might be a
> request for help with GIS homework, but it's hard to tell :-)
>
>
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