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PyNGL ("pingle") is a Python module built on top of NCL's graphics library, which produces publication-quality, two-dimensional visualizations tailored for climate and weather data.

Interfaces exist for the display of:

  • Contour plots
  • XY plots
  • World map projections
  • Vector plots
  • Streamline plots

PyNGL is developed by the Computational and Information Systems Lab at the National Center for Atmospheric Research (NCAR).

NCAR is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.


PyNGL can be installed on Linux and MacOS systems via conda:

conda create --name pyn_env --channel conda-forge pyngl
source activate pyn_env

Documentation and support

Visit the PyNGL website for documentation, examples, support, and installation.

Bug reports and feature requests

Use the GitHub issue tracker to submit a bug or request.