Yes you pretty much have to limit your WFS queries if you want something 
useable...

Josh Rosenthal wrote:
> For what its worth, you may want to consider using EPA's WMS for some 
> of your visualization, especially when you either start displaying a 
> lot of points, or start to get to polygons.  (GeoXML will work, but 
> nothing seems to run at a tolerable speed when displaying 100 or so 
> assessors parcels as polygons... as images, however, its all good. 
>  Presumably wetlands files will get similarly painful).
Using WMS or TMS  in combination with WFS after you zoom in is another 
possibility I would like to do semi automated... Some WMS/WFS use the 
same values for LayerName and Type...
>
> MassGIS has a very nice and detailed tutorialwalkthrough about 
> googlemaps and WMS on their website.
> http://lyceum.massgis.state.ma.us/wiki/doku.php?id=googlemaps:home
>
> For data queries, you can use WMS GetFeatureInfo, or if you find this 
> to be too slow, start using limited  WFS queries with Lance's GeoXML 
> to load and even preload bitesized blocks of data.
>
> Josh
>
> On Wed, Nov 19, 2008 at 2:17 PM, Lara <[EMAIL PROTECTED] 
> <mailto:[EMAIL PROTECTED]>> wrote:
>
>
>     Hello, I've been searching the web for a couple of days now to find
>     examples of Google Maps sites (with viewable code) that plot WFS
>     features (points to start) and show attribute data in info windows
>     when the feature is clicked on. I've found excellent guides and sites
>     by Kyle Mulka and Lance Dyas that seem close, but don't show this
>     functionality (unless I'm overlooking something).
>
>     Does anyone know of any code or sites that I could look at that does
>     this? Specifically, I'm trying to pull EPA feature data into a Google
>     Map from URLs like
>     http://geodata.epa.gov/wfsconnector/com.esri.wfs.Esrimap/NPL_FS?
>
>     Thanks for any help in advance,
>     Lara
>
 

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