Unless otherwise noted, this software is multi licensed.
The source code in this project is in the public domain in the United States 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 https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits#copyright
Additionally, we waive copyright and related rights in the work worldwide through the CC0 1.0 Universal public domain dedication.
Since the CC0 1.0 license does not state whether a user can re-distribute the material, we also release the source code under the BSD-3 license.
This software also uses external libraries released under the GPLv2 license. As such this work as a whole is also released under the GPLv2 license.
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