Written by Daniel Buscombe, October 2013 while at Grand Canyon Monitoring and Research Center, U.G. Geological Survey, Flagstaff, AZ please contact: [email protected] for lastest code version please visit: https://github.com/dbuscombe-usgs see also (project blog): http://dbuscombe-usgs.github.com/

This software is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of Interior. For more information, see the official USGS copyright policy at http://www.usgs.gov/visual-id/credit_usgs.html#copyright