Scott Davis wrote: > I have a datalayer that has ~10,000 bus stops (points).
WFS is basically like GeoRSS in that it communicates XML about vector data, and that the browser must decipher the XML. Differrence 1 is that it can describe more than a point; difference 2 is that it's even more verbose and therefore XML parsing is even slower. So if you're in a circumstance (say, zoomed out to the city-wide view) where you'll want to see 1,000 points or even 500, you probably won't enjoy the effect. This has been a thorn in my side for a few years, wanting to use WFS but finding it impractical for any significant scales of use. At FRUGOS a few months back where I met you, I presented my solution when I had the same issue in Google Maps. My solution was to use a WMS layer, then have a click handler that would do the real magic: 1. Grab the data for the point, e.g. GetFeatureInfo to GeoServer 2. Draw a popup box anchored at the appropriate location on the map, containing the data. The visual effect is that they clicked and got a popup, but you get to bypass the overhead involved in true Features. I know that OL can do all of the above. For (1) there's a Freemap of the CIA Factbook demonstrating click-to-query code. Part (2) should be very easy once you have the data and have generated the HTML. -- Gregor Mosheh / Greg Allensworth System Administrator, HostGIS cartographic development & hosting services http://www.HostGIS.com/ "Remember that no one cares if you can back up, only if you can restore." - AMANDA _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
