North American Butterfly Association
Map A Count Circle
Google Maps is a very powerful online mapping program that has many features itself and is capable of being extended by third parties. One very useful extension for our purposes is one developed by Barry Hunter, a geographer in the UK, that generates a circle centered on a specific latitude and longitude.
To use this extension, first get the latitude and longitude of a count center. Please see the NABA count center link for tips on how to do this for a new count. After firing up Google Maps, insert the following text in the Google Maps search window:
http://www.nearby.org.uk/google/circle.kml.php?radius=7.5miles&lat=36.1234&long=-92.1234
where the numbers following lat= and long= are in decimal degrees and are specific for your count center. You can print this map to send to NABA when preregistering a new count.
Please let me know if you have any questions or suggestions.