The best solution to this will be to implement UTFGrid output from GeoServer. See OpenLayers example at http://tschaub.net/openlayers/examples/utfgrid.html
Will take a decent bit of development effort, as it gets in to core rendering stuff. But will be awesome if we build it right. On Tue, Feb 28, 2012 at 4:51 PM, Andrea Aime <andrea.a...@geo-solutions.it> wrote: > On Tue, Feb 28, 2012 at 3:01 AM, Phil Scadden <p.scad...@gns.cri.nz> wrote: >> Wanting to implement some "on hover" function on a map and whether best >> to issue WMS or WFS requests? > > Hmm... probably neither? At least, not if you are issuing a new > request each time > the user moves the mouse. > > Ideas: > - use GetFeatureInfo, but issue the request only if the user position > changed enough > from the last position (2-3 pixels?) > - use GetFeature, but load a larger area in the client and then hit > that one until the > mouse position gets out of the previously loaded area. The tricky > part si balancing > the area size with the need to keep the amount of features loaded small > > Cheers > Andrea > > -- > ------------------------------------------------------- > Ing. Andrea Aime > GeoSolutions S.A.S. > Tech lead > > Via Poggio alle Viti 1187 > 55054 Massarosa (LU) > Italy > > phone: +39 0584 962313 > fax: +39 0584 962313 > mob: +39 339 8844549 > > http://www.geo-solutions.it > http://geo-solutions.blogspot.com/ > http://www.youtube.com/user/GeoSolutionsIT > http://www.linkedin.com/in/andreaaime > http://twitter.com/geowolf > > ------------------------------------------------------- > > ------------------------------------------------------------------------------ > Keep Your Developer Skills Current with LearnDevNow! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-d2d > _______________________________________________ > Geoserver-users mailing list > Geoserver-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geoserver-users ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Geoserver-users mailing list Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
