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County Borders of US states RRS feed

  • Question

  • I notice at the right zoom level the county borders are on the VEMap in dotted lines.  Is there a way to access this data:  A method that allows you to display the counties in random colored polygons maybe?  And is there reverse geo's available to click in the county and recieve the county name? (basic data of the point clicked).

    Thanks, Jeff

    Thursday, February 22, 2007 2:51 AM

Answers

  • If you're interested, there is U.S. census data available with all the Lat Long coordinates of county borders available:

    http://www.census.gov/geo/www/cob/co2000.html#ascii

    You'll have to parse the ascii file into results you can work with, but its very precise.  Only downside is that the results can be quite large.  For instance, Lake of the Woods County in Minnesota had well over 400 Lat Long coordinates that would consume a lot of bandwidth sending to the client.
    Friday, March 2, 2007 10:50 PM
  • GeoPioneer, if you ever need to send lots of lat long values to the client take a look at this:

    http://www.soulsolutions.com.au/Articles/Encodingforperformance/tabid/96/Default.aspx

    I have found great bandwidth savings.

    John.

    Saturday, March 3, 2007 4:43 AM
    Moderator

All replies

  • Jeff,

    Those county borders are part of the image tiles and so there is no way to access this data apart from overlaying your own tiles.  You can however do what you want by drawing on your own clickable polygons that do what you want
    Thursday, February 22, 2007 3:45 PM
  • If you're interested, there is U.S. census data available with all the Lat Long coordinates of county borders available:

    http://www.census.gov/geo/www/cob/co2000.html#ascii

    You'll have to parse the ascii file into results you can work with, but its very precise.  Only downside is that the results can be quite large.  For instance, Lake of the Woods County in Minnesota had well over 400 Lat Long coordinates that would consume a lot of bandwidth sending to the client.
    Friday, March 2, 2007 10:50 PM
  • GeoPioneer, if you ever need to send lots of lat long values to the client take a look at this:

    http://www.soulsolutions.com.au/Articles/Encodingforperformance/tabid/96/Default.aspx

    I have found great bandwidth savings.

    John.

    Saturday, March 3, 2007 4:43 AM
    Moderator