COPYING

GeoTrellis is made available by Azavea (www.azavea.com) under GNU General Public License, version 3 (GPLv3) (http://www.opensource.org/licenses/gpl-3.0.html).  

  GeoTrellis is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  GeoTrellis is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with GeoTrellis.  If not, see <http://www.gnu.org/licenses/>.