Hi, Nigel,

What aspect of topology do you want? There are many functions describing topological characteristics listed here:

        http://postgis.refractions.net/docs/ch06.html#id2595672

For example:

ST_Dimension(geometry)
ST_IsSimple(geometry)
ST_IsClosed(geometry)
ST_NumInteriorRings(geometry)

-- Andy


On Jun 4, 2008, at 5:26 AM, Nigel de_barrio wrote:

Dear list,

at the homepage of postgis I have read that postgis has basic topology support.

Can anyone give me an example for that please?

Becaue, what I don`t understand:

I wan`t to see the coordinates of a multipolygon.
Of cource I get them with SELECT astext(the_geom) from table,
I see then all the coordinates.

But that does not say anything about topology , does it?

Can anybody help please, thank you, Nigel
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