Hi there,

spillocaster schrieb:
> Does anyone know, where the problem is and how to solve this?

I think, that's a problem of estimation in PostGIS...

AFAIK Mapnik runs this query:
select xmin(ext),ymin(ext),xmax(ext),ymax(ext) from (select 
estimated_extent('<your table>','<your selection>') as ext) as tmp

Perhaps this helps for debugging?

Best regards,
Tobias
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