pyitm: Longley-Rice Irregular Terrain Model

This is a pure python implementation of the NTIA Longley-Rice Irregular Terrain Model. This model is a port from the C++ [1] model which itself was a port from the original FORTRAN implementation. pyitm only supports the area-prediction mode of the original model and has been validated against the example data sets from NTIA report 82-100 [2].


pyitm is available on PyPI and can be installed using pip:

pip install pyitm

Original NTIA Disclaimer:

The ITM software was developed by NTIA. NTIA does not make any warranty of any kind, express, implied or statutory, including, without limitation, the implied warranty of merchantability, fitness for a particular purpose, non-infringement and data accuracy. NTIA does not warrant or make any representations regarding the use of the software or the results thereof, including but not limited to the correctness, accuracy, reliability or usefulness of the software or the results. You can use, copy, modify, and redistribute the NTIA-developed software upon your acceptance of these terms and conditions and upon your express agreement to provide appropriate acknowledgments of NTIA’s ownership of and development of the software by keeping this exact text present in any copied or derivative works. By clicking the links on this page to download the software, you acknowledge that you have read this disclaimer.