Dear All,

I'm working with raster data in Postgis using Django models as the 
connector.

I've found that the lookups for raster are not efficient (uses ST_Polygon 
for making the intersection).

Also, I need to aggregate some data or extract the value in a x,y, 
coordinate. 

Do you have any ideas for improving these features. I have some code 
(Aggregates) that may be useful for you.

Thank you for reading

Best wishes,

Juan.

p.s. I'm working with the stable branch in github    
'1.11.dev20160704203858'


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