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Functional UNcertainty Constrained by Law and Experiment
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Functional Uncertainty Constrained by Law and Experiment

travis CI build status readthedocs status


To run the tests, certain software must be installed.

The minimum required python packages to run F_UNCLE are shown in the file /pip_req.txt. These packages can either be installed manually or the conda package manager can be used to create an environment containing all the required packages. In the root F_UNCLE folder run the following commands:

conda create -n funcle python=3.5 --file pip_req.txt
source activate funcle

The conda environment will now be active and provide all the packages needed to run F_UNCLE

To run the tests, several other packages are needed, they are given in pip_test_req.txt. These packages can either be installed manually or added to the conda environment with the following commands from the root F_UNCLE directory:

source activate funcle
conda install --file pip_test_req.txt

To build the documentation, further packages are needed, they are given in pip_doc_req.txt and can be installed as above


From the root directory of F_UNCLE run:

pytest F_UNCLE

This will discover, run and report on all test in the F_UNCLE module


Documentation is available on readthedocs

Los Alamos National Laboratory (LANL) Release Information

The initial version of this code was written at LANL. It was released in 2016 with Los Alamos Computer Code index LA-CC-16-034 and the following description:

The F_UNCLE project is for quantitatively characterizing uncertainty about functions and how physical laws and experiments constrain that uncertainty. The project is an evolving platform consisting of program and text files that numerically demonstrate and explore quantitative characterizations of uncertainty about functions and how either historical or proposed experiments have or could constrain that uncertainty. No actual physical measurements are distributed as part of the software.


  • Stephen Andrews
  • Andrew Fraser


F_UNCLE: Tools for understanding functional uncertainty Copyright (C) 2016 Andrew M. Fraser and Stephen A. Andrews

This program 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 2 of the License, or (at your option) any later version.

This program 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 this program. If not, see <>.

Files and Directories

The root project directory has the following files and sub-directories:

Files for making the documentation
Code described in this documentation
Latex source for papers and presentations based on F_UNCLE

The F_UNCLE directory has the following sub-directories:

Scripts that make figures for documents in root/reports
Code to simulate toy experiments such as: Cylinder, Gun, Sphere and Stick with classes that are sub-classes of classes defined in the Models and Utils directories
Scripts that define particular "Physics Models" that inherit from Utils/
Code for optimizing a posteriori probability and reporting Fisher information
Scripts with base classes for Experiments and Models
File that enables importing directory as module and contains text for documentation
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