[geos-devel] OverlayNG for Testing

[Martin Davis]

On Thu, Jul 30, 2020 at 9:08 AM Sandro Santilli <strk at kbt.io> wrote:

> On Wed, Jul 29, 2020 at 02:08:59PM -0700, Martin Davis wrote:
>
> > Another behavioural change is that now overlay operations do not return
> > mixed-dimension results.  Instead, a homogeneous geometry containing only
> > the highest dimension resultants is returned.
>
> ST_MakeValid in PostGIS expects the old behavior, as the funders of it
> insisted in "not loosing any vertex" (so not throwing away anything).
>

How does ST_MakeValid use the overlay operations?
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