plotly 4.9.0

v4.9.0 - Kaleido for static image export, Hexbin Tile Maps, and Timelines

on Python PyPI

See the full announcement at https://community.plotly.com/t/announcing-plotly-py-4-9-kaleido-for-static-image-export-hexbin-tile-maps-and-timelines/42524

Added

• Added image export support using Kaleido. The image export backend can be configured using the new engine argument to plotly.io.to_image and plotly.io.write_image. The engine argument may be set to "kaleido", "orca", or "auto". The default is engine="auto", in which case the Kaleido backend is enabled if the kaleido package from PyPI is installed, otherwise Orca is used. (#2613).
• plotly.express.timeline() added as an official alternative to plotly.figure_factories.create_gantt() (#2626)
• create_hexbin_mapbox() added to Figure Factories, with thanks to @RenaudLN for the impressive contribution!
• facet_row_spacing and facet_col_spacing added to Plotly Express cartesian 2d functions (#2614)
• base added to Plotly Express bar and bar_polar functions (#2626)
• px.NO_COLOR constant to override wide-form color assignment in Plotly Express (#2614)

Fixed

• trendline traces are now of type scattergl when render_mode="webgl" in Plotly Express (#2614)
• regression from 4.8.1 whereby "parent" was not accepted as part of path for px.sunburst() and px.treemap() (#2640)
• create_dendrogram() figure factory now works correctly with scipy 1.5.1 (#2627)

Updated

• Updated Plotly.js to version 1.54.6. See the plotly.js CHANGELOG for more information.
• Added all cartesian-2d Plotly Express functions, plus imshow, to Pandas backend with kind option (#2541)
• plotly.express.imshow now uses data frame index and columns names and values to populate axis parameters by default (#2539)
• Javascript extensions are now build using Node 12, and have an updated package-lock.json with many fewer security warnings (#2636)