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Creator for Analysis Ready Data (ARD)

Project description

cedar - Create Earth engine Data cubes of Analytical Readiness

cedar is a library and application to help download and preprocess satellite data to be “analysis ready data” (ARD) “data cube” as quickly as possible. cedar has been designed primarily to preprocess Landsat data, and can help acquire data from the Google Earth Engine (GEE). It is based on tools within the Python ecosystem for geospatial data processing (rasterio), saving and working with N-dimensional data (netCDF4 and xarray), and parallelization (dask and distributed).






Continuous integration test status

Test coverage


Change Log

All notable changes will appear in this log. Changes are categorized into “Added”, “Changed”, “Fixed”, and “Removed”. To see a comparison between releases on Github, click or follow the release version number URL.

For information on the style of this change log, see


  • BREAKING CHANGE - Require image collection filters to be specified in the configuration file according to the image collection. This change has been made to prepare for using image collections that do not have the same filters (e.g., more than just LANDSAT/*/C01/T1_SR data)

  • Add a check to make sure that Order.name_template creates unique names for pre-ARD before continuing. If there are duplicate names, raises ValueError

  • Fix warning when calculating mean/std runtime of tasks that haven’t been updated (RuntimeWarning: Mean of empty slice…)

  • Provide better info in cedar status list when nothing is tracked because the tracking folder doesn’t exist

  • Fix bug when ordering but not using filters that resulted in 0 images being found

  • Validate image collection names using click argument callback in cedar submit CLI

  • Improve error propagation inside cedar.ordering.Order and cedar.tracker.Tracker. Order.add no longer catches and swallows EmptyCollectionError, which now is handled in Tracker.submit


  • Fix bug in jsonschema validation by allowing tuples & lists to count as ‘array’

  • Added cedar status cancel command to cancel orders

  • Refactor internals to use TrackingMetadata model


  • Fix packaging issue (missing package data)


  • Fix packaging issue


  • First public release

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