MapSavage wrote:
> I need to present a map showing anywhere from 1 to 3000+ shaded US
> counties.
Look at:
www.polyarc.us/polybuilder
First select a state in order to build county polys. Click "Break" to
toggle the common boundaries between the counties.
> Is this feasible using encoded polygons, or will it take too long to
> display?
Encoded polys may help a little but 3110 polys displayed
simultaneously is too many. You will have to build a custom tile
layer and/or use a public domain OGC overlay provided by the USGS. It
has several.
> There's a famous name brand (ahem) gis web service that I'm
> currently using and it takes 40-60 seconds of their server time to
> display all the shaded counties for the lower 48.
Which web service ? I am curious how it is done.
> Our target range would be in the 10-15 seconds response time.
With a Quad Core 4.0 GHz processor with 8 Gigs of memory in a multi-
threaded browser, perhaps.
> Is it worth investigating google maps further?
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