On Oct 8, 3:30 pm, Matthew <[EMAIL PROTECTED]> wrote:
> I, too, am looking to add a simple overlay including all county
> boundaries on my API application, and came across this thread. I
> found the link above:
>
> http://ims.cr.usgs.gov/wmsconnector/com.esri.wms.Esrimap/USGS_EDC_Nat...
>
> As something I am looking for. Question is, how do I go about adding
> this as an overlay?
>
> My current code and map can be found
> here:http://webcams.mhartman-wx.com/test_nation_full.html
>
> Thanks for any help!
An example using static maps:
www.polyarc.us/usgs
I use:
http://mcmcwebmap.usgs.gov/OGCConnector/servlet/OGCConnector?request=GetMap&ServiceName=national_atlas_data&layers=County+Boundaries
because it is a bit more reliable than the other USGS server.
Either way, you will have to compensate for different projections.
EPSG:4326 is not identical to Google's Metcator projection. I faked
it by cutting the WMS images into strips. Tiling accomplishes the
same thing.
For selectivity by color & by place, something similar to the
following:
www.polyarc.us/sparsetile
could be done using US Census Department cartographic boundary files.
Building KML or KMZ files for 3110 counties in eight different colors
will require over a GIG of file space which exceeds the googlepages
quota. If someone is willing to host the files, I will be happy to
generate one for each county in one color. The other colors can be
easily cloned by changing a single line of each file. Concatenating
separate "colors" & "shapes" files into a single complete file works
well. Too bad the standard does not support indirect file references.
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