jtablesaw/tablesaw
View on GitHub ↗ ★ 3,769 Java
Java dataframe and visualization library
16 mentions on Hacker News by 7 people: 6 stories, 10 comments · first 2016-03-22 · latest 2026-02-28
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Tablesaw: Java Dataframe and Visualization Librarystory by saikatsg · 2026-02-28 · 0 comments
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Tablesaw – Java dataframe and visualization librarystory by otobrglez · 2026-02-12 · 0 comments
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…to make working with data frames easier. Here are some similar data frame libraries for Java: https://github.com/jtablesaw/tablesaw https://github.com/dflib/dflib My preferred way is just use duckdb java API. I didn't see anything better…
comment by uwemaurer · 2025-05-17 · in Show HN: Fahmatrix – A Lightweight, Pandas-Like DataFrame Library for Java -
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Tablesaw: Java Dataframe and Visualization Librarystory by gardenfelder · 2023-02-06 · 0 comments
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…some scenarios? And when blazing in memory speed is useful, why can't you use something like this: https://github.com/jtablesaw/tablesaw Is XSV faster? Is it the command line convenience (although surely it was not that convenient to write…
comment by rookwood102 · 2018-09-08 · in XSV: A fast CSV command-line toolkit written in Rust -
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Ask HN: How do you talk to your GitHub community?story by ljw1001 · 2018-04-07 · 66 comments
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The core looks close enough to dataframes that I'd be curious to know how you compare to tablesaw: https://github.com/jtablesaw/tablesaw This looks neat but I'm not sure why I would care about this. There's a ton of solutions out there in…
comment by agibsonccc · 2018-01-17 · in Show HN: Bistro – A light-weight column-oriented data processing engine -
…you use it in Java, Tablesaw is a data-frame-like data-munging framework that works well with it. https://github.com/lwhite1/tablesaw
comment by ljw1001 · 2017-03-30 · in Smile – Statistical Machine Intelligence and Learning Engine -
…vector languages like Q. The code translates into Java, where it executes tablesaw code. Tablesaw ( https://github.com/lwhite1/tablesaw ) is a very fast dataframe for java, with pretensions. I'm mostly doing it for fun, but also to make it…
comment by ljw1001 · 2017-03-07 · in Ask HN: Have you created a programming language and why? -
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Ask HN: Best way to support community for small open source projects?story by ljw1001 · 2017-03-07 · 2 comments
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Tablesaw ( https://github.com/lwhite1/tablesaw ) Tablesaw is a high-performance dataframe in Java, with hooks into plotting and machine-learning routines. Open-sourced under Apache2. Would be happy to have help with: - Integrating more…
comment by ljw1001 · 2016-11-01 · in Ask HN: Who needs contributors? (November 2016) -
As someone who has (comparatively) recently started an open-source java project https://github.com/lwhite1/tablesaw , I loved this post. I know the both the pleasure and desire to just quit. It's a bit frightening to think I could put 10…
comment by ljw1001 · 2016-08-09 · in How my open source hobby project became my job: 10 years of OptaPlanner -
…got just 6 points for a high performance java dataframe. Today had 30 unique visitors on github: https://github.com/lwhite1/tablesaw . Good thing i have a day job :)
comment by ljw1001 · 2016-07-04 · in Ask HN: What did your 'Show HN' project turn into? -
…developer. Main side project is Tablesaw, a dataframe for "large" data (100M to 1B rows) in Java ( https://github.com/lwhite1/tablesaw ). Although, it might be better described as a personal, in-memory, column-oriented, data warehouse. :)
comment by ljw1001 · 2016-06-13 · in Ask HN: What is your job role and what are the side projects you are working on? -
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Show HN: Tablesaw: A Java data-frame for 500M-row tablesstory by ljw1001 · 2016-06-12 · 1 comment
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I'm working on a dataframe for Java for large datasets: https://github.com/lwhite1/tablesaw . It's not ready for prime time, but: Time to sum 1,000,000,000 floats: 1.5 seconds Time to sort 1,000,000,000 floats: 30.5 seconds The code to…
comment by ljw1001 · 2016-03-22 · in Sorting a Billion Numbers with Julia