Hi Jon,
On Oct 8, 2008, at 3:38 PM, Jon Burgess wrote: > That query could not be generated from the 'layer' definition that you > posted, the select queries are too different. Which layer > definitions do > you have which mention 'AS citylike' in the "table" parameter? My > guess > is that other layer has the wrong SRS. > Thanks, that's exactly what was happening. > The main reason for using a fixed extent is that the estimated_extent > has been observed to have significant errors. You need to perform a > 'VACUUM ANALYZE' to force the estimated extent to be updated after > loading new data and even then it is not accurate enough for Mapnik. > Calculating the true extent involves a full table scan which incurs a > considerable startup penalty. Great, that's excellent info. Cheers, Dane _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
