[postgis-devel] topology : finding if the ring is an inner ring or outer ring

[Stephen Woodbridge]

On 2/19/2015 1:04 PM, Rémi Cura wrote:
> Hello,
> somebody knows how to find the information?
>
> I can't find something that will reliabily work with flat ring.

In postgis terms you might be able to use st_contains() or 
st_containsProperly()

-Steve