Version 0.10.0

This minor release brings a number of enhancements and bugfixes, checkout the release blog post for a visual summary of the most important enhancements.

• 🧰 Improving the contributor experience: moving away from pyctdev to a more usual and easier approach, and adopt ruff as a linter and formatter
• 📦 Modernizing hvPlot's packaging: migrating to pyproject.toml
• 📖 Improving the documentation: adding a user guide on large time-series and improving the geographic user guide
• 📈 Enhancing the plotting API: in part to support the NumFocus SDG project that aims to modernize the HoloViz Examples
• 🐛 Fixing bugs!

Many thanks to @ahuang11, @droumis, @hoxbro, @jsignell, and @maximlt for their contributions.

Governance:

• Andrew (@ahuang11) promoted as Maintainer! (#1267)

Enhancements:

• Add bgcolor parameter to set the background color (#1308)
• Add robust parameter, similarly to Xarray (#1291)
• Add tiles_opts parameter to customize the tiles (#1299)
• Add support to xyzservices tiles (#1307)
• Allow to set the downsample algorithm as string input (#1314)
• Allow crs as Cartopy class name to match projection (#1332)

Bug Fixes:

• Fix saving Panel objects with hvplot.save (#1297)
• Fix setting group_label when plotting a histogram (#1310)
• Fix the support of HoloViews ImageStack support and usage of aggregator and by (#1316)
• Fix handling of EPSG codes (#1330)
• Explorer: fix handling of Xarray objects that have dims without coords (#1334)

Compatibility:

• Minor changes in preparation of the HoloViews Pandas index refactor (#1281)

Documentation:

• Add user guide for working with large time-series datasets (#1302)
• Clarify the geographic user guide (#1269, #1299)
• Misc (#1266, #1268, #1319)

Infrastructure / Tests:

• Migrate to pyproject.toml and improve the contributor experience (#1296, #1322)
• Format and lint the code base with ruff (#1320)
• Pin intake to version 2.0.0 (#1275)
• Fix the test suite after the latest Dask release (#1298)
• Remove the examples folder (#1287)
• Install the tests dependencies primarily with pip (#1276)
• Misc (#1317, #1321, #1323, #1324, #1327)

Full Changelog

Version 0.9.2

The 0.9.2 release is a patch release that brings a few bugfixes and documentation improvements, improving Polars support and documentation. Many thanks to @kevinheavey (first contribution!), @MarcoGorelli, @hoxbro, and @maximlt for their contributions.

Bug fixes:

• Correctly fall back to all numeric Polars columns when y is not specified (#1247)

Documentation:

• Better expose Polars support (#1262)
• Rename the Pandas reference section to Tabular (#1260)
• Add roadmap for 2024 (#1253)
• Various small changes (#1255 and #1261)

Infrastructure / Tests:

• Add downstream Polars test (#1243)
• Compatibility with Pandas 2.2 (#1257)
• Dynamically generate the unit test matrix and add a cache option (#1235)

Full Changelog

Version 0.9.1

The 0.9.1 release brings a number of enhancements, bugfixes and documentation improvements. Many thanks to @iuryt (first contribution!), @MarcoGorelli (first contribution!), @ahuang11, @hoxbro and @maximlt for their contributions.

Enhancements:

• Explorer: give more space to the plot and various UI tweaks (#1197, #1198, #1199, #1225)
• Explorer: disable the geographic controls when geoviews is not installed (#1223)
• Explorer: change the default plot type from line to scatter (#1228)
• Support polars objects in the hvplot.plot entrypoint (#1219, #1222)

Bug fixes:

• Fix ignoring hover_cols in OHLC plots (#1216)
• Fix considering datashaded plots with one y variable as categorical (#1231)
• Fix displaying Panel objects returned by hvPlot with show (#1230)

Documentation:

• Replace Google Analytics with GoatCounter (#1224)
• Indicate that Stamen tiles require a Stadia account (#1226)
• Reintroduce colorbars in the Matplotlib guide (#1229)
• Misc (#1186, #1195)

Maintenance:

• Bump the minimum Param version to 1.12.0 (#1227)

Full changelog

Version 0.9.0

The 0.9.0 release is a minor release with some exciting new features and a large number of bug fixes and enhancements. Many thanks to @rdesai9 (first contribution!), @dogbunny (first contribution!), @bikegeek (first contribution!), @ahuang11, @droumis, @hoxbro, @MarcSkovMadsen, @maximlt and @philippjfr for their contributions. A special thanks to @ahuang11 and @hoxbro without who these release notes would be much shorter!

New features:

• The Explorer has been extended with the following features:
  • Support for Xarray data, enhanced geographic support and add a live update checkbox (#1141)
  • Display the code snippet within a tab (#1156)
  • Allow defining options passed to plot.opts() (#1171)
• Add experimental Fugue integration (#1102)
• Add basic Polars integration (#1129)

Enhancements:

• Add .hvplot.explorer() as an alternate entry point to create an explorer (#1154)
• Add the resample_when option to dynamically enable datashade/rasterize/downsample (#1103)
• Expose the HoloViews timeseries downsampling algorithm (LTTB) with the downsample option (#1127, #1157)
• Expose the HoloViews autorange option (#1128, #1158, #1174)
• Allow string formatting for labels plots (#1140)
• Support plots that use by with rasterize with HoloViews ImageStack (#1132, #1144)
• Update show to return the configured Server or StoppableThread (#1121)

Bug fixes:

• Do not force geo=True if tiles are provided (#1083, #1113)
• Fix x-limit, y-limit, and rasterize support for geo features (#1135, #1163)
• Fix handling WKT strings and add pyproj.CRS support (#1092, #1139)
• Underlay land and ocean features (#1151)
• Fix .hist for the Ibis data source (#997)
• No longer suggest installing datashader and geoviews from the pyviz channel (#1130)
• Silence GDAL exceptions warning (#1142)

Documentation:

• Various docs improvements and addition of an Integrations guide (#1084, #1173, #1177)
• Extending the reference gallery (#999)
• Added extra size parameter to scatter plot example (#1118)

Compatibility:

• Preparations before the release of Param 2.0 (#1146, #1164)
• Pin Param to <3.0 (#1175)
• Drop Python 3.6 and 3.7 (#1077)

Infrastructure / Tests:

• Add Dask DataFrame plot test (#1131)
• Add codespell to pre-commit (#1172)
• Add OpenCollective sponsor link on the repo page (#1123)

Full changelog

Version 0.8.4

The 0.8.4 release brings a number of bugfixes and documentation improvements. Many thanks to @kthyng (first contribution!), @raybellwaves, @jsignell , @hoxbro, @maximlt and @philippjfr for contributing.

Bug fixes:

• Fix .interactive layout compatibility with Bokeh 3 (1076)
• Fix usage with intake (1052)
• Fix deprecated usage of Param 2.0 (1064)
• Fix projection when xlim/ylim provided (1053)
• Fix interpretation of positional arg with geopandas, now used as color (1056)
• Fix import error messages for geo dependencies (1054)
• Fix usage of hover for geometries - make it less likely to fail (1055)

Documentation:

• Update to latest nbsite & pydata-sphinx-theme (1070)
• Update to Google Analytics4 (1075)

Maintenance:

• Add ipywidgets to the examples deps (1048)

Version 0.8.3

The 0.8.3 release brings a number of bugfixes and documentation improvements. This release is also marked by the adoption of a formal project governance, ensuring hvPlot's future as a healthy open-source project! Many thanks to @raybellwaves, @jsignell (welcome back!), @droumis, @hoxbro, @maximlt, @philippjfr and @MarcSkovMadsen for contributing!

Please note that hvPlot is not yet compatible with Bokeh 3.

Bug fixes:

• Allow .hvplot to execute the ibis backend (#990)
• Improve package name in error message (#1005)
• Let process_crs try a few approaches before raising error (#1026)
• Fix label on unnamed data array (#1025)
• Only use xarray long_name metadata if it is a string (#1031)
• Replace deprecated Param methods (#1030)
• Ensure interactive pipeline is not re-executed needlessly (#1029)
• Fixes subplots=True for geo=True and by (#761)
• Force column names to string (#1042)

Documentation:

• Docstring fixes (#985)
• Improve the hist reference guide (#1002)
• Improve the bar reference guide (#1032)

Project governance:

• Create initial project gov docs (#1016)

Maintenance:

• Rename master branch to main (#1011)
• Add Python 3.11 to the test matrix (#1015)
• Run examples with nbval instead of nbsmoke (#1044)
• Fix the build by better defining the package extras (#1046)

Version 0.8.2

November 24, 2022

The 0.8.2 release brings a number of bugfixes and documentation improvements. @MarcSkovMadsen has kept improving the docstrings and we congratulate @sophiamyang for her first contribution that made the landing page nicer! Many thanks to @droumis, @hoxbro, @maximlt, @philippjfr and @MarcSkovMadsen for contributing!

Please note that hvPlot is not yet compatible with Bokeh 3.

• Dependencies:
  • Add Panel lower pin to ensure Bokeh 3 is not installed (#974)
• Interactive:
  • Support slice (#776)
• Plot:
  • Convert DataFrame columns with type RangeIndex to strings to ensure compatibility with HoloViews (#932)
  • Ensure that xarray dataset metadata propagates to NdOverlays (#930)
  • Support rioxarray (#905)
  • Improve error message mentionning pyproj (#950)
• Explorer:
  • Don't error on datetime-like axis (#968)
  • Don't use xlim/ylim slider if start and end values are identical (#966)
• Documentation:
  • New and updated docstrings (#892, #863)
  • Improve the landing page (#874, #903, #876)
  • Change http to https (#873)
  • Add intended rolling_window param into pipeline (#944)
  • Updates the README (#817)
  • Miscellaneous documentation improvements (#866, #887, #910)
• Development:
  • Add pre-commit to format and lint the code on commits (#967)
• CI:
  • Miscellaneous fixes and improvements (#867, #922, #947, #948, #949, #960, #977)

Version 0.8.1

August 26, 2022

The 0.8.1 release is a bug fix release, focusing mostly on improving .interactive and the explorer. The documentation has seen some improvements too; @MarcSkovMadsen has been improving the docstrings so make sure to check them out. Many thanks to @jlstevens, @hoxbro, @maximlt, @philippjfr and @MarcSkovMadsen for contributing!

• Interactive:
  • Set interactive function to lazy to avoid calling it twice (772)
  • Add support for hvplot kind accessor (781, 858)
  • Add more tests to Interactive and some comments (812)
  • Fixes to the operators implemented by Interactive (814)
  • Propagate max_rows (815)
  • Only register the function parameters watchers once (818)
  • Do not re-execute transform on copied clones (833)
  • Internal callback made dependent only when parameters are found (857)
• Explorer:
  • Make the explorer easier to use (799)
  • Enhancement to Fields tab in explorer (811)
  • Remove the marker styling option of the explorer (809)
• Plot:
  • Make rescale_discrete_levels a plot option (758)
  • Ensure that dataframes with multiple columns are categorically shaded (759)
  • Display a color bar when rasterize is enabled (782)
  • Update the expected DataSet plot title after xarray 2022.6.0 (795)
  • Set categorically shaded when there's more than one variable (843)
  • Clone GeoViews' features (850)
• Documentation:
  • Add new and improve existing docstrings (793, 826, 827, 822)
  • Update developer install instructions (794)
  • Rework the landing page and add a Getting started guide (838)
• Misc:
  • No longer use basestring from holoviews.core.util (757)
  • Ensure that repr is initialized on hvplot backend import (774)
  • Add RGB test data (779)
  • Add flatten utility function (798)

Version 0.8.0

The 0.8.0 release is a minor release with some exciting new features and a large number of bug fixes and enhancements. Many thanks to @FabianHofmann, @jomey, @ablythed, @jlstevens, @hoxbro, @michaelaye, @MridulS, @ppwadhwa, @maximlt, @philippjfr for contributing!

Main new features:

• Add ability to call interactive on bound functions (#720)
• Add support to the Matplotlib and Plotly backends (#653)
• Add the hvPlotExplorer, a Panel UI component designed to explore data (#638, #639, #651, #710, #726)

Enhancements:

• Interactive:
  • Allow using getitem on an accessor in interactive (#633)
  • Allow attribute access on ufunc on interactive (#635)
  • Enhancements for interactive API (#640)
  • Flatten op_args to be able to find nested widgets (#699)
• Allow dynspread to be used with rasterize (#637)
• Add a title to xarray plots with scalar coords (#659)
• Adding datashade and rasterize options to scatter_matrix (#495)
• Update the default internal value of clim to support Matplotlib (#679)
• Ensure bokeh/panel extension is loaded only once (#686)
• Add support for planar layout from Networkx (#700)
• Wrap color in hv.dim when it matches a dimension/column (#717)
• Expose datashader line_width and rescale_discrete_levels options (#731)
• Improve array-like handling for x and y inputs (#714)

Fixes:

• Interactive:
  • Interactive fixes (#630)
  • Fix for interactive transform (#632)
  • Fix issue with accessors on interactive (#641)
  • Consistently dereference attribute access (#642)
• State that the data cannot be symmetric if it's empty (#680)
• Disable hover on errorbars plot (#721)
• Fix application of the scale argument for geoviews features (#725)

Documentation:

• Add scatter matrix reference (#689)
• Plotting user guide enhancement (#694)
• Download a tutorial file with the right filename (#711)
• Add more imports to try/except import check (#693)
• Various minor documentation enhancements and fixes (#625, #643, #644, #663, #678, #722)

Maintenance:

• Drop support for py2.7, min supported version is py3.6 now (#702)
• Switch to Pytest and run the CI on Python 3.6, 3.8 and 3.9 (#703)
• Changed to packaging.version (#708)
• Fix a broken test due to PROJ unexpectedly matching a normal string (#660)
• Various improvements to the CI (#690, #691. #709, #712, #715, #719, #724, #727, #730, #732, #733, #734, #735)

Version 0.7.3

This is a minor release focusing on greatly improving the .interactive() API for flexibly building simple apps using widget controls. Thanks to @jbednar and @jlstevens for a few small fixes and many thanks to @philippjfr for all the rest!

Features:

• Improved .interactive Dataframe support: max_rows display, column access (#640)
• Improved accessor and attribute behavior for .interactive (#633, #635, #641, #642)
• Add .holoviews() terminal method to .interactive pipelines
• Add support for kwargs to .interactive.layout
• Misc fixes to .interactive API (#630, #632)
• Allow dynspread=True to be used with rasterize=True (now that Datashader supports it)