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Analysis & visualization of integrated-assessment scenarios

Project description

pyam: analysis & visualization
of integrated-assessment and macro-energy scenarios

license pypi conda latest

Code style: black python pytest ReadTheDocs codecov

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Overview and scope

The open-source Python package pyam provides a suite of tools and functions for analyzing and visualizing input data (i.e., assumptions/parametrization) and results (model output) of integrated-assessment models, macro-energy scenarios, energy systems analysis, and sectoral studies.

The comprehensive documentation is hosted on Read the Docs!

Key features

  • Simple analysis of scenario timeseries data with an interface similar in feel & style to the widely used pandas.DataFrame
  • Advanced visualization and plotting functions (see the gallery)
  • Scripted validation and processing of scenario data and results

Timeseries types & data formats

Yearly data

The pyam package was initially developed to work with the IAMC template, a timeseries format for yearly data developed and used by the Integrated Assessment Modeling Consortium (IAMC).

model scenario region variable unit 2005 2010 2015
MESSAGE CD-LINKS 400 World Primary Energy EJ/y 462.5 500.7 ...
... ... ... ... ... ... ... ...

An illustration of the IAMC template using a scenario from the CD-LINKS project
via the The IAMC 1.5°C Scenario Explorer

Subannual time resolution

The package also supports timeseries data with a sub-annual time resolution:

  • Continuous-time data using the Python datetime format
  • "Representative timeslices" (e.g., "winter-night", "summer-day") using the pyam extra-columns feature

Read the docs for more information about the pyam data model or look at the data-table tutorial to see how to cast from a variety of timeseries formats to a pyam.IamDataFrame.


An introduction to the basic functions is shown in the "first-steps" notebook.

All tutorials are available in rendered format (i.e., with output) as part of the online documentation. The source code of the tutorials notebooks is available in the folder docs/tutorials of this repository.


The comprehensive documentation is hosted on Read the Docs.

The documentation pages can be built locally, refer to the instruction in docs/README.

Authors & Contributors

This package was initiated and is currently maintained by Matthew Gidden (@gidden) and Daniel Huppmann (@danielhuppmann). See the complete list of contributors.

The core maintenance of the package is done by the Scenario Services & Scientific Software research theme at the IIASA Energy, Climate, and Enviroment program. Visit for more information.

Scientific publications

The following manuscripts describe the pyam package at specific stages of development.

The source documents are available in the manuscripts folder of the GitHub repository.

Release v1.0 (June 2021)

Published to mark the first major release of the pyam package.

Daniel Huppmann, Matthew Gidden, Zebedee Nicholls, Jonas Hörsch, Robin Lamboll, Paul Natsuo Kishimoto, Thorsten Burandt, Oliver Fricko, Edward Byers, Jarmo Kikstra, Maarten Brinkerink, Maik Budzinski, Florian Maczek, Sebastian Zwickl-Bernhard, Lara Welder, Erik Francisco Alvarez Quispe, and Christopher J. Smith. pyam: Analysis and visualisation of integrated assessment and macro-energy scenarios. Open Research Europe, 2021. doi: 10.12688/openreseurope.13633.2

Release v0.1.2 (November 2018)

Published following the successful application of pyam in the IPCC SR15 and the Horizon 2020 CRESCENDO project.

Matthew Gidden and Daniel Huppmann. pyam: a Python package for the analysis and visualization of models of the interaction of climate, human, and environmental systems. Journal of Open Source Software (JOSS), 4(33):1095, 2019. doi: 10.21105/joss.01095.


Copyright 2017-2023 IIASA and the pyam developer team

The pyam package is licensed under the Apache License, Version 2.0 (the "License");
see LICENSE and NOTICE for details.


For basic instructions, please read the docs!

To install from source (including all dependencies) after cloning this repository, simply run

pip install --editable .[tests,optional_io_formats,tutorials]

To check that the package was installed correctly, run

pytest tests

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