Kotlin Dataframe Files

We just released v0.13.1!

Documentation/Readme might not be up-to-date yet. However, feel free to test it in your project and let us know if something does not work as expected!

To sum up the most significant changes: - We finally merged the new ColumnsSelection DSL (documentation will come too). This comes with KDocs everywhere, previously missing overloads, and clearer function names. - We're continuously improving support for Kotlin Notebook by creating and improving a native table component for DataFrames, by @ermolenkodev - (Nested) table output now looks better for notebooks on Github (for example) - Improvements to Arrow reading (thanks, @fb64 and @Kopilov!) - Many other fixes and version bumps, see below!

Check it out on Maven Central

Features

• ColumnsSelection DSL overhaul by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/372
• Add static rendering for GitHub by @ileasile in https://github.com/Kotlin/dataframe/pull/480
• Static notebook fixes and examples by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/511
• Better static tables by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/519
• Added ! to DataColumnArithmetics by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/531
• Add read of Arrow TimeStamp without timezone as LocalDatetime [#515] by @fb64 in https://github.com/Kotlin/dataframe/pull/516
• Add readArrowReader method to allow loading a dataframe from an ArrowReader by @fb64 in https://github.com/Kotlin/dataframe/pull/529
• Excel add new sheet without overwriting the file by @LeandroC89 in https://github.com/Kotlin/dataframe/pull/157
• make forEach inline to enable composable and suspend calls in lambda by @koperagen in https://github.com/Kotlin/dataframe/pull/572
• Add option to prevent Gradle plugin from adding dependency on KSP by @koperagen in https://github.com/Kotlin/dataframe/pull/571
• add infer types parameter in DSL functions by @koperagen in https://github.com/Kotlin/dataframe/pull/579
• Reading Arrow NullVector by @Kopilov in https://github.com/Kotlin/dataframe/pull/550

Fixes

• Fix performance problem in rename implementation by @nikitinas in https://github.com/Kotlin/dataframe/pull/532
• Ported the fix for JDBC integration from the 0.12.1 branch by @zaleslaw in https://github.com/Kotlin/dataframe/pull/538
• Fix reading Excel file that has cells with formulas that return string by @jmrsnt in https://github.com/Kotlin/dataframe/pull/484
• Catching Error too in isOpenApiStr by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/490
• Turning off the feedback widget in documentation as it's non-functional by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/491
• Fixes related to Kotlin Notebook plugin integration by @ermolenkodev in https://github.com/Kotlin/dataframe/pull/501
• remove klaxon usage outside json.kt by @koperagen in https://github.com/Kotlin/dataframe/pull/506
• use range indexing to get rows subset by @koperagen in https://github.com/Kotlin/dataframe/pull/514
• Linter for all modules by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/521
• add analytics initialization script by @koperagen in https://github.com/Kotlin/dataframe/pull/524
• Fix toDataFrame for value classes by @koperagen in https://github.com/Kotlin/dataframe/pull/542
• make sure to adjust nullability in order to fix platform types by @koperagen in https://github.com/Kotlin/dataframe/pull/552
• Fixes Api Guru examples by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/559
• generate "nullable properties" only where needed by @koperagen in https://github.com/Kotlin/dataframe/pull/597
• Updating maven publication developers list by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/611
• Fix for [#573]: Change serialization format for rendering in IntelliJ IDEA by @ermolenkodev in https://github.com/Kotlin/dataframe/pull/574
• Fix for mac-os permissions pre-commit by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/616
• prevent Klaxon from using default reflective serializer by @koperagen in https://github.com/Kotlin/dataframe/pull/621

Docs and Examples

• update groupBy documentation by @koperagen in https://github.com/Kotlin/dataframe/pull/465
• Docs updates by @koperagen in https://github.com/Kotlin/dataframe/pull/545
• Update of the documentation for the 0.12.1 release by @zaleslaw in https://github.com/Kotlin/dataframe/pull/556
• Documentation updates by @koperagen in https://github.com/Kotlin/dataframe/pull/560
• migrate Titanic.ipynb to Kandy by @koperagen in https://github.com/Kotlin/dataframe/pull/548
• fix broken links by @koperagen in https://github.com/Kotlin/dataframe/pull/626
• Checking notebooks for 0.13.1 by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/625
• Fixes in resize-iframes.js by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/618

Version Updates

• Update simple-git version to 2.0.3 by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/535
• Updating docProcessor to 0.3.3 by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/600
• Ksp fix by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/592
• Version bumps by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/590
• Version bumping Dokka to 1.9.10 by @Jolanrensen in https://github.com/Kotlin/dataframe/pull/599
• Updated MySQL and PostgreSQL versions in build config by @zaleslaw in https://github.com/Kotlin/dataframe/pull/609

New Contributors

• @jmrsnt made their first contribution in https://github.com/Kotlin/dataframe/pull/484
• @fb64 made their first contribution in https://github.com/Kotlin/dataframe/pull/516
• @LeandroC89 made their first contribution in https://github.com/Kotlin/dataframe/pull/157

Known Issues

• KDoc rendering looks odd on 2024 Nightly IntelliJ by @Jolanrensen in https://github.com/Kotlin/dataframe/issues/585
• This is being worked on in IntelliJ, JetBrains Markdown, and here.

Full Changelog: https://github.com/Kotlin/dataframe/compare/v0.12.1...v0.13.1