Name: The Great R Divide: data.table vs. tibble + The data we work with
Start: 2025-11-25T18:00:00+01:00
End: 2025-11-25T19:30:00+01:00
Location: Vester Farimagsgade 37A

*"The Great R Divide: data.table vs. tibble" presented by [Ahmet Akkoç](https://www.linkedin.com/in/ahmet-akkoc/) +*
*"The data we work with" presented by [Gregers Kjerulf Dubrow](https://www.linkedin.com/in/dubrowg/), [Rasmus Bååth](https://www.sumsar.net/), and maybe you?* :)

Want to share a story about an interesting, tricky, or inspiring data set you’ve worked with? Join this CopenhagenR meetup’s open session by emailing rasmus.baath@gmail.com to claim a 5–15 minute slot!

**When?**
25th of November, 2025, Tuesday.
\* 17:30 - Doors open
\* 18:00 - *The Great R Divide: data.table vs. tibble* presentation by Ahmet Akkoç begins.
\* 18:30 *The data we work with* session begins.
At the same time, there will be Coffee/beers/cake .
\* 19:15 More Coffee/beers/cake for those that want to hang around
\* 20:00 - No more cake

**Where?**
PROSA København, room Ada, first floor
[Vester Farimagsgade 37A, 1606 København, Denmark](https://maps.app.goo.gl/fJJ5BsMSSMotYGwS9)

**What?**

Join us for a CopenhagenR meetup, whether you're new to R or a seasoned pro! This double feature includes a presentation on *data.table* vs. *tibbles* and a session on *The Data We Work With*.

**1\. The Great R Divide: data\.table vs\. tibble**

Do you ever feel like not all R users are coding in the same language? While many use *data.table* to store their data, others rely on tidyverse’s *tibble*. So how do we decide which one to use? Let’s sit down for a brief discussion of how we got here!

This presentation will be given by [Ahmet Akkoç](https://linktr.ee/ahmet.akkoc) (rhymes with “coach”), a Data Scientist based in Copenhagen since 2021. Ahmet works as an IT Engineer and Data Scientist at ZiteLab, a Frederiksberg-based e-health consultancy. His recent projects include federated learning, OMOP-CDM integrations, and time-series forecasting.

**2\. The data we work with**

A session where we’ll hear stories about some of the data sets we work with. It will be kicked off by [Gregers Kjerulf Dubrow](https://www.linkedin.com/in/dubrowg/), who will talk about data he works with at the National Food Institute, and [Rasmus Bååth](https://www.sumsar.net/), who will discuss a data set used for calculating CO₂ emissions.

But this session is also open to **you**! Would you like to take 5–15 minutes to talk about some interesting (or horrible, weird, boring, etc.) data you work with? We’d love to hear about it! Please email the organizers at rasmus.baath@gmail.com to let us know.

\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-

We would like to thank Prosa for generously hosting CopenhagenR.
*Would you be interested in speaking at CopenhagenR or have any other suggestion, please don't hesitate to reach out to the organizers at [rasmus.baath@gmail.com](http://rasmus.baath@gmail.com/)!* **😊**

Rasmus Arnling Bååth

Ahmet Akkoć

Gregers Kjerulf Dubrow

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