Yan Holtz

Software engineer who ❤️ #dataviz.

Creator of and the R, Python, D3 and React graph galleries.

➡️ 🌊 🍺

[Yan Holtz @R_Graph_Gallery]

So glad!! 🔥☀️

Less than a week back at work,
and 72 people have already joined my data visualization course.

https://t.co/TNFMbMFrVT

Thank you for the trust! 🙏

[Yan Holtz @R_Graph_Gallery]

@Renan_7_7 @WeiseFranklin Well ppl will still be needed. But they will use AI to build the visuals, not limited tools like powerBI and Tableau!

[Yan Holtz @R_Graph_Gallery]

New feature on https://t.co/eymII9fe3s

You can now share a _specific_ project.

Example:
https://t.co/a4JWvy2Rr3

No idea why I didn't build it first thing but 🤷

[Yan Holtz @R_Graph_Gallery]

https://t.co/eymII9eGdU is growing!

Just pushed a few new projects definitely worth checking!

[Yan Holtz @R_Graph_Gallery]

Currently working on https://t.co/NFTV2Cme9s

Can't believe this whole bunch of posters have been shipped all over the world!! 🤓

[Yan Holtz @R_Graph_Gallery]

@KevinJMartinez_ Do u mean you will print them?

[Yan Holtz @R_Graph_Gallery]

Brand new #dataviz project! 🍾🚀☀️🤗

After teaching dataviz to 2000+ ppl I realised it's always the same issues that come back again and again.

So I built a set of 60+ flashcards that summarise them!
https://t.co/PTpULvr7ss

WDYT?

[Yan Holtz @R_Graph_Gallery]

Too much color
Too much grid
Too many graphs
Too many explanations
Too many buttons
Too many tabs
Too many options
Too many labels
Too much animation

Ai builds everything for us

So the work now is not to add
But to cut through the noise!

https://t.co/PTpULvqzCU

[Yan Holtz @R_Graph_Gallery]

@McQInteractive I would love that :)

[Yan Holtz @R_Graph_Gallery]

I work between 2 worlds, and the gap is massive:

Software engineering: ppl stopped writing code a while ago.

Data analysis, ppl don’t use AI or a chatbot to code a bit faster.

I think it's important to realize how the future looks like: natural language to build everything

[Yan Holtz @R_Graph_Gallery]

@afifnandya should be good now!

[Yan Holtz @R_Graph_Gallery]

Just pushed a 100% new version of https://t.co/NFTV2Cme9s

Thx to all the contributors who opened issues and PRs in the last 6 years

Now that a proper tech stack is in use, I have many many new features to build!

[Yan Holtz @R_Graph_Gallery]

@jeremytraff thx Jeremy!
A lot of cool updates are coming!

[Yan Holtz @R_Graph_Gallery]

@Qiao_biostat Should be fixed now @Qiao_biostat ! Sorry for the inconvenience!

[Yan Holtz @R_Graph_Gallery]

@BiochemistTomas thx for the bug report!
The redirection does work on my side.. Can you confirm it's broken on yours?

[Yan Holtz @R_Graph_Gallery]

@enjalot omg you're so so right!

[Yan Holtz @R_Graph_Gallery]

The dual Y axis chart lets you compare 2 series on the same plot.

It's one of the easiest ways to _lie_ with data.

So I made a little playground to highlight why it's problematic!

https://t.co/HFUSSeaVXA

[Yan Holtz @R_Graph_Gallery]

@PlayUnlabeled Just discovered your game, love it!

[Yan Holtz @R_Graph_Gallery]

Reviewed 40+ #dataviz projects for the Pacific Dataviz Challenge. Top caveats:

💀 Claude default look
📚 40 charts, no story
➖ Useless buttons
🥸 Text nobody reads
😮 Wrong chart type
🐣 Long lines
📽️ Endless animations
📍 Legends, not labels
Details 👇
https://t.co/xkb1lBfWHr

[Yan Holtz @R_Graph_Gallery]

Love #data?
Love when it looks beautiful?

Marthe Viallet nailed it one more time! ❤️

Check the data art exhibition she organised for the ENSAI.
It's open for 2 more weeks in Rennes, France.

Follow her for more details on it.
Soon to be added in https://t.co/FxaHnI2rc9

[Yan Holtz @R_Graph_Gallery]

Want to have a good laugh?

Ask "roast me" to your AI and read it loud to your friends!!!

I hope it will be as tough for you than it's been for me :)