[postgis-devel] Coverage Functions

[Martin Davis]

On Fri, Apr 28, 2023 at 7:18 AM Sandro Santilli <strk at kbt.io> wrote:

>
> As mentioned in chat, I'm thinking having a GEOSCoverage
> datatype would be advisible here, with one constructor
> taking a vector of Geometry pointer for now but eventually
> getting more constructors.
>

Sandro, are you suggesting a GEOSCoverage type containing a *topological*
structure, or one containing a set of Polygons/MultiPolygons?

For a topological structure, that may be useful, but that is a fair bit of
work and is NOT required by the recent coverage functions.  If and when
this is done, I suggest it is called GEOSTopology to be totally clear.

For a coverage type that simply contains a list of polygonal geometries,
that is what I have called a Simple Features Coverage.  GEOSCoverage would
be a fine name for this.  This is actually what I considered at the start
of developing the various coverage operations.  I backed away from this in
order to keep things simple.  But it does have some advantages for
understanding and documenting the concept of a simple coverage.
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