Thanks for your answer! Correct me when I'm wrong, but I understood that the "pre-generalized feature" extension was made to improve the performance when displaying vector data.
If you use the WMS Service, you only get rasterdata and no vectordata. When I display my data via the WMS, the layer gets drawn very fast, because the WMS returns only an image and not the single objects with their attributes and coordinates. When doing this, I get no clue in the log-file, that the pregeneralized feature is used. Do you have any other idea? Paul -----Ursprüngliche Nachricht----- Von: christian.muel...@nvoe.at [mailto:christian.muel...@nvoe.at] Gesendet: Donnerstag, 14. Juni 2012 15:30 An: Biskup, Paul Cc: geoserver-users@lists.sourceforge.net Betreff: Re: [Geoserver-users] GeoServer pregeneralized features extension with OpenLayers AFAIK, the pre-generalized feature works only with the WMS service. Please can you check your log file when using a WMS request. If my assumption is correct, we can take further steps. Christian Zitat von PBI <paul.bis...@fit.fichtner.de>: > Hi there, > > currently I'm working on an OpenSource WebGIS, in which a large amount > of line-objects (about 15 000) have to be displayed over the map of Germany. > The data is distributed via GeoServer 2.1.3 WFS and is displayed in an > OpenLayers Client (Version 2.11). The data is stored in a PostGIS-database. > Because of the huge data and the high grade of detail of the > lineobjects, the application takes much time to display the vectordata > in small scales > (>1:1 000 000). > > To deal with this problem I would like to use the "GeoServer > pregeneralized features"-extension. > > I've already generalized the data and followed this tutorial > (http://www.mail-archive.com/geoserver-devel@lists.sourceforge.net/msg > 10382.html) to create a "generalized datastore" in GeoServer. > > The configuration part went well. But when I try to view the > generalized layer in OpenLayers, I get the following message in the > GeoServer-Log: > ?WARN [org.geotools.data.gen] - No hint for geometry distance in > query, fallback to base feature? > > This means, the layer is displayed correctly, but always with the base > geometry. > > I get the same message when following the tutorial from the GeoServer > website > (http://docs.geoserver.org/stable/en/user/tutorials/feature-pregeneral > ized/feature-pregeneralized_tutorial.html) > and generating a generalized data store from a shape file, so it's not > a problem with the PostGIS-database. > > I've read in the Geotools-documentation > (http://docs.geotools.org/latest/userguide/library/data/pregeneralized > .html) that the additional hint "GEOMETRY_DISTANCE" has to be passed > to the WFS-query. > > Does anybody know how to configure the OpenLayers-client to be > compatible with the GeoServer pregeneralized features extension? > > Thanks alot. > > Paul > > > > -- > View this message in context: > http://osgeo-org.1560.n6.nabble.com/GeoServer-pregeneralized-features- > extension-with-OpenLayers-tp4981400.html > Sent from the GeoServer - User mailing list archive at Nabble.com. > > ---------------------------------------------------------------------- > -------- > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. > Discussions will include endpoint security, mobile security and the > latest in malware threats. > http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Geoserver-users mailing list > Geoserver-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geoserver-users > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Geoserver-users mailing list Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
