[postgis-users] DE-9IM pattern for gaps

[Martin Davis]

You haven't specified what you mean by "gap".  The DE-9IM model is a
"global" model, in that it considers the input geometries as a whole.  You
can use the DE-9IM to determine if two geometries have a "gap" between them
via ST_Disjoint.

On Wed, Jul 6, 2022 at 8:48 AM Shaozhong SHI <shishaozhong at gmail.com> wrote:

> Is there a DE-9IM pattern for gaps?
> Regards,
> David
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