[postgis-users] exterior rings in multipolygons

[Sandro Santilli]

On Mon, Jul 25, 2011 at 04:16:02PM -0500, Mr. Puneet Kishor wrote:

> Thanks. The above works. So, does this mean that given "MULTIPOLYGON(((1),(2),(3),(4)))", 1 indeed is an exterior ring, and 2-4 are interior rings, and the "entity" does have 4 rings kinda like below?
> 
> +-------------------+
> |                   |
> |  +-----+   +---+  |
> |  |     |   | 3 |  |
> |  |  2  |   +---+  |
> |  +-----+          |
> |       +--------+  |
> |       |        |  |
> |   1   |   4    |  |
> |       |        |  |
> |       +--------+  |
> +-------------------+

Yes.

--strk; 

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