[postgis-users] raster regions

[Joao Cordeiro]

Hi there,

I am not actually a POSTGIS user, or developer, although I am doing some 
research of integration of vector -raster in a dbms context. My main 
question s about identifying regions represented in a domain like the 
"hybrid raster" so that they can be referred to in a query. For example, 
I would like to write something like "/*select d from districts where 
d.geometry touches flooding*/", where "flooding" indicates an expression 
intended to decide on the pertinence of locations to a flooding ​​risk 
area described, for instance through map algebra.

Thanks for any hints or suggestions.

Att.

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