[postgis-users] fuzzy tolerance

[Stefan Keller]

Hi,

There is at least SnapToGrid:
# select ST_SnapToGrid((ST_DumpPoints(mypoly.geom)).geom, 0.1) from mypoly;

:Stefan

2016-09-14 10:34 GMT+02:00 Willy-Bas Loos <willybas at gmail.com>:
> Hi
>
> Why is it that PostGIS has no such concept as a fuzzy tolerance?
> Tiny slivers can be a big problem.
>
> In this talk on the FOSS4G in Bonn, this became increasingly clear to me:
> http://frab.fossgis-konferenz.de/en/foss4g-2016/public/events/1172
> The speaker put a lot of emphasis on the fact that 98% of the coordinates
> would be slightly changed when retrieved to a client and saved again. This
> would result in many topology errors.
>
> Cheers,
> --
> Willy-Bas Loos
>
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