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Altair Change Log

Version 2.4.0 (Unreleased)

Enhancements

Backward-incompatible Changes

Maintenance

Bug Fixes

Version 2.3.0 (Released December 7, 2018)

Includes many reworked examples in the example gallery.

Enhancements

  • Better errors for non-string column names, as well as automatic conversion of pandas.RangeIndex columns to strings (#1107)

  • Renderers now have set_embed_options() method (#1203)

  • Added kaggle renderer & more HTML output options (#1123)

Backward-incompatible changes

Maintenance

  • fix typing requirement in Python 3.6+ (#1185)

  • Added support & CI testing for Python 3.7 (#1008)

Bug fixes

  • Selection predicates now recognize all valid entries (#1143)
  • Python 2 support for chart.save() (#1134)

Version 2.2.2 (Released August 17, 2018)

Bug Fixes

  • fix missing JSON resource in altair.vega.v4 (#1097)

Version 2.2.1 (Released August 15, 2018)

Bug Fixes

  • appropriate handling of InlineData in dataset consolidation (#1092)

  • fix admonition formatting in documentation page (#1094)

Version 2.2.0 (Released August 14, 2018):

Enhancements

  • better handling of datetimes and timezones (#1053)

  • all inline datasets are now converted to named datasets and stored at the top level of the chart. This behavior can be disabled by setting alt.data_transformers.consolidate_datasets = False (#951 & #1046)

  • more streamlined shorthand syntax for window transforms (#957)

Maintenance

Backward-incompatible changes

  • alt.SortField renamed to alt.EncodingSortField and alt.WindowSortField renamed to alt.SortField (#3741)

Bug Fixes

  • Fixed serialization of logical operands on selections within transform_filter(): (#1075)

  • Fixed sphinx issue which embedded chart specs twice (#1088)

  • Avoid Selenium import until it is actually needed (#982)

Version 2.1.0 (Released June 6, 2018):

Enhancements

  • add a scale_factor argument to chart.save() to allow the size/resolution of saved figures to be adjusted. (#918)

  • add an add_selection() method to add selections to charts (#832)

  • add chart.serve() and chart.display() methods for more flexibility in displaying charts (#831)

  • allow multiple fields to be passed to encodings such as tooltip and detail (#830)

  • make timeUnit specifications more succinct, by parsing them in a manner similar to aggregates (#866)

  • make to_json() and to_csv() have deterministic filenames, so in json mode a single datasets will lead to a single on-disk serialization (#862)

Breaking Changes

  • make data the first argument for all compound chart types to match the semantics of alt.Chart (this includes alt.FacetChart, alt.LayerChart, alt.RepeatChart, alt.VConcatChart, and alt.HConcatChart) (#895).

  • update vega-lite to version 2.4.3 (#836)

    • Only API change is internal: alt.MarkProperties is now alt.MarkConfig

Maintenance

  • update vega to v3.3 & vega-embed to v3.11 in html output & colab renderer (#838)

Version 2.0.0: May 2, 2018

  • Complete rewrite of Altair, focused on supporting Vega-Lite 2.X

Version 1.2.1: October 29, 2017

This version of Altair is based on Vega-Lite 1.2.1.

Major additions

  • Support for JupyterLab/nteract through MIME based rendering. Enable this by calling enable_mime_rendering() before rendering visualizations (#216).

  • Change default import in all code and docs to import altair as alt

  • Check for missing and misspelled column names upon exporting or rendering, and raise FieldError (#399) if any problems are found. This can be disabled by setting Chart.validated_columns=False.

  • Raise MaxRowsExceeded if the number of rows in the dataset is larger than Chart.max_rows to guard against sending large datasets to the browser.

  • Move the Vega-Lite 1.x api into altair.v1 to make it easier for us to migrate to Vega-Lite 2.x and continue to support 1.x. No import change are needed as altair.v1 is aliased to altair in this releasealtair.v1 (#377).

  • Moved the example notebooks into a separate repository (https://github.com/altair-viz/altair_notebooks) that has Binder support (#391).

  • Add $schema to top-level JSON spec (#370).

  • Minor documentation revisions.

Bug fixes

  • Make sure default mark is a point (#344).

Version 1.2: Nov 7, 2016

Major additions

Bug fixes

  • Countless minor bug fixes

maintenance:

  • Update to Vega-Lite 1.2.1 and add its supported features

  • Create website: http://altair-viz.github.io/

  • Set up Travis to run conda & pip; and to build documentation

Version 1.0: July 11, 2016

  • Initial release of Altair