[postgis-users] exterior rings in multipolygons

[Mr. Puneet Kishor]

--
Puneet Kishor http://punkish.org
Researcher http://paleodb.org http://macrostrat.org http://carbonmodel.org
Science Fellow http://creativecommons.org
Charter Member http://osgeo.org

On Jul 26, 2011, at 2:43 AM, Sandro Santilli <strk at keybit.net> wrote:

> 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.
> 


Thanks for confirming the above. However, per my follow-up email (see http://postgis.refractions.net/pipermail/postgis-users/2011-July/030366.html), I am not getting the interior rings as polygons. They are coming out as LINESTRINGs. Shouldn't the indivdual components of the MULTIPOLYGON be POLYGONs?