Altair Change Log

Version 2.0.0:

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

Update to Vega-Lite 1.2 and make all its enhancements available to Altair
Add Chart.serve method (#197)
Add altair.expr machinery to specify transformations and filterings (#215)
Add Chart.savechart method, which can output JSON, HTML, and (if Node is installed) PNG and SVG. See https://altair-viz.github.io/documentation/displaying.html (#213)

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