Credits

freud Developers

The following people contributed to the development of freud:

  • Alain Kadar, University of Michigan

  • Alex Dutton, University of Michigan

  • Andrew Karas, University of Michigan

  • Andrew Kerr, University of Michigan

  • Antonio Osorio, University of Michigan

  • Ben Swerdlow, University of Michigan

  • Benjamin Schultz, University of Michigan

  • Bradley Dice, University of Michigan

  • Brandon Butler, University of Michigan

  • Bryan VanSaders, University of Michigan

  • Carl Simon Adorf, University of Michigan

  • Carolyn Phillips, University of Michigan

  • Charlotte Zhao, University of Michigan

  • Chrisy Du, University of Michigan

  • Domagoj Fijan, University of Michigan

  • Dylan Marx, University of Michigan

  • Emily Siew, University of Michigan

  • Eric Harper, University of Michigan

  • Erin Teich, University of Michigan

  • Fabian Prandl, University of Tübingen

  • Gabby Jones, University of Michigan

  • Greg van Anders, University of Michigan

  • James Antonaglia, University of Michigan

  • James Proctor, University of Michigan

  • Jen Bradley, University of Michigan

  • Jens Glaser, University of Michigan

  • Joseph Burkhart, University of Michigan

  • Jin Soo Ihm, University of Michigan

  • Joshua A. Anderson, University of Michigan

  • Kate Jensen, University of Michigan

  • Kelly Wang, University of Michigan

  • Kody Takada, University of Michigan

    1. Eric Irrgang, University of Michigan

  • Matthew Palathingal, University of Michigan

  • Matthew Spellings, University of Michigan

  • Maya Martirossyan, Cornell

  • Mayank Agrawal, University of Michigan

  • Melody Zhang, University of Michigan

  • Michael Stryk, University of Michigan

  • Mike Henry, Boise State

  • Paul Dodd, University of Michigan

  • Pavel Buslaev

  • Philipp Schönhöfer, University of Michigan

  • Richmond Newman, University of Michigan

  • Rose Cersonsky, University of Michigan

  • Rubén Chaves

  • Ryan Marson, University of Michigan

  • Suraj Kannur, University of Michigan

  • Tim Moore, University of Michigan

  • Tommy Waltmann, University of Michigan

  • Trevor Teague, University of Michigan

  • Vyas Ramasubramani, University of Michigan

  • Wenbo Shen, University of Michigan

  • William Zygmunt, University of Michigan

  • Yezhi Jin, University of Michigan

  • Yina Geng, University of Michigan

  • Yvonne Amaria, University of Michigan

Source code

Eigen (http://eigen.tuxfamily.org) is included as a git submodule in freud. Eigen is made available under the Mozilla Public License v2.0 (http://mozilla.org/MPL/2.0/). Its linear algebra routines are used for various tasks including the computation of eigenvalues and eigenvectors.

fsph (https://github.com/glotzerlab/fsph) is included as a git submodule in freud. It is used for the calculation of spherical harmonics. fsph is made available under the MIT license:

Copyright (c) 2016 The Regents of the University of Michigan

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

HOOMD-blue (https://github.com/glotzerlab/hoomd-blue) is the original source of some algorithms and tools for vector math implemented in freud. HOOMD-blue is made available under the BSD 3-Clause license:

BSD 3-Clause License for HOOMD-blue

Copyright (c) 2009-2019 The Regents of the University of Michigan All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

2. 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.

3. Neither the name of the copyright holder 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.

voro++ (https://github.com/chr1shr/voro) is included as a git submodule in freud. It is used for computing Voronoi diagrams. voro++ is made available under the following license:

Voro++ Copyright (c) 2008, The Regents of the University of California, through
Lawrence Berkeley National Laboratory (subject to receipt of any required
approvals from the U.S. Dept. of Energy). All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

(1) Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.

(2) 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.

(3) Neither the name of the University of California, Lawrence Berkeley
National Laboratory, U.S. Dept. of Energy 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 OWNER 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.

You are under no obligation whatsoever to provide any bug fixes, patches, or
upgrades to the features, functionality or performance of the source code
("Enhancements") to anyone; however, if you choose to make your Enhancements
available either publicly, or directly to Lawrence Berkeley National
Laboratory, without imposing a separate written license agreement for such
Enhancements, then you hereby grant the following license: a non-exclusive,
royalty-free perpetual license to install, use, modify, prepare derivative
works, incorporate into other computer software, distribute, and sublicense
such enhancements or derivative works thereof, in binary and source code form.

bessel-library (https://github.com/jodesarro/bessel-library) is a single header file which implements the cylindrical bessel functions used by freud to compute 2D static structure factors. It is made available under the MIT license:

Copyright (c) 2022 Jhonas Olivati de Sarro

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.