A GeoTess model is comprised of 2D triangular tessellations of a unit sphere with 1D radial arrays of nodes associated with each vertex of the 2D tessellations. Variable spatial resolution in both geographic and radial dimensions is supported. Users have considerable flexibility in how to define the data stored on the grid.

The GeoTess library is provided in Java and C++, with a C interface to the C++ library. The most recent release has been tested on Linux, with Mac and Windows versions coming soon. Source code and pre-compiled binaries are provided.

A model parameterization and software support system that implements the construction, population, storage and interrogation of data stored in 3D Earth models.

Version 2.6.1 Software Downloads

C++ / C

Makefiles are included so that any downloaded package can be recompiled for another platform. See the documentation for more information.

Online Documentation

User’s Manual – A PDF file describing the software

Detailed interface documentation – Java     C++     C

Example Applications

The following links display html representations of source code for several example applications that use the GeoTess library to accomplish common tasks. The software downloads described above include the source code and compiled binaries for these sample applications.


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Software License

Copyright 2009 Sandia Corporation. Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains certain rights in this software.  BSD Open Source License. All rights reserved.  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:     * Redistributions of source code must retain the above copyright notice,      this list of conditions and the following disclaimer.    * Redistributions in binary form must reproduce the above copyright      notice, this list of conditions and the following disclaimer in the      documentation and/or other materials provided with the distribution.    * Neither the name of Sandia National Laboratories nor the names of its      contributors may be used to endorse or promote products derived from      this software without specific prior written permission.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.