KotlinForData

These lovely PieCharts 🥧📈

New level of our ecosystem integration!

📖 Docs worth checking out: Migration guide → kotlin.github.io/dataframe/migr… Compiler Plugin → kotlin.github.io/dataframe/comp… Guide for backend SQL devs → kotlin.github.io/dataframe/guid…

🗄️ Better backend & SQL workflows ⭐️New documentation for reading Parquet files into DataFrames ⭐️JDBC module now supports DataSource directly, not only Connection ⭐️More control when defining custom SQL databases — you can override more, including fetchSize for batch reads

🚀 Kotlin DataFrame 1.0.0-Beta4 is out! Better SQL integration (DataSource support), new Parquet docs, Compiler Plugin updates, more control over custom databases, plus lots of quality-of-life improvements & bug fixes. A solid step toward stable 1.0 💪github.com/Kotlin/datafra…

When AI gets finance wrong, Kotlin keeps it real! In this KotlinConf talk, Enrique López Mañas shows how Kotlin notebooks and DataFrames help verify AI-generated portfolio models – catching errors that even LLMs can miss. 🎥 Watch it here: kotl.in/psc0vh

What does it look like when you take ✨ Kotlin Notebooks ✨ and solve #AdventOfCode Day 3? Well, it looks like this! @volebamor created this viz live on our stream that just finished. 🎨 Nothing even comes close to @Kotlin Notebooks when doing this stuff.

And will be improved in the nearest Beta4 release!

If you're planning to attend #KotlinDevDay in Amsterdam tomorrow, don't miss the talk "Exploring and Analyzing Data as a Kotlin Developer" by @jolanrensen 👉Upperdeck Thu 12:30 - 13:00

@gaplo917 shared an impressive collection of Kotlin Notebooks github.com/gaplo917/aweso… #Koog (Kotlin native AI Agent framework by JetBrains) #SpringAI #Ollama #Neo4j #Bedrock #Gemini #langchain4j

Curious how to build beautiful charts like in the Kotlin powerlifting case study? Check out the Kandy DSL for easy, elegant data visualization! 🎨👇 kotlin.github.io/kandy/examples… #Kotlin #DataViz #Kandy #DataScience

Thanks Adele Carpenter for very interesting use-case!

New on the Kotlin Blog: 🏋️‍♂️ Exploring Data Science with Kotlin using a 3.3M+ row powerlifting dataset. 🔍 Dive into Kotlin DataFrame, Kandy, PostgreSQL for insights on competition outcomes. Check it out! 👉 blog.jetbrains.com/kotlin/2025/08… #Kotlin #DataScience #Powerlifting #DataAnalysis

@djleeds shows a use-case with Kotlin DataFrame and Kandy plotting library in the video youtu.be/3em_mmL8F3g?t=…

@djleeds observed new Kotlin Notebook functionality in the video youtu.be/3em_mmL8F3g?t=…

Hey Spring developers! Want to know how @Kotlin notebooks can boost your productivity? Watch @ignatberesnev ’s talk from #IntelliJIDEAConf 👉 youtu.be/rDFrh3ctN4

Bitcoin Daily Trend Visualization (2024) nbviewer.org/github/JetBrai…

Full Guide to work with Time and Date nbviewer.org/github/JetBrai…

Lets-Plot Kotlin API 4.11 was released on the previous week: Imrpovements in the Time Series Plotting: - Support temporal data types from kotlinx.datetime, java.time, and java.util. - Support for timezone-aware java.time.ZonedDateTime and java.time.OffsetDateTime objects.