Mattias Petter Johansson (MPJ)'s Avatar

Mattias Petter Johansson (MPJ)

@mpj.fff.dev

Data Engineer πŸ’› Creator of the YouTube show Fun Fun Function, writes weekly data development chronicle: funfun.email 🦁Previously @ Spotify & parity.io

209 Followers  |  468 Following  |  90 Posts  |  Joined: 30.07.2023  |  2.5321

Latest posts by mpj.fff.dev on Bluesky

Swede here, 1-2 is actually not long enough to be an actual vacation.

Seriously, 2 weeks is barely a meditation retreat.

04.07.2025 04:36 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Apologies - I mean what is the β€œmanual” part here? I don’t understand that part of the sentence structure in the OP. If this is an automated system test, what is the manual part of it?

14.06.2025 12:48 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

But wasn’t the car manually driven at the point of the test? I.e. not full auto pilot which is the system that would have school bus training. I’m kind of confused about the parameters of the test

14.06.2025 11:41 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Biggest commitment to a 3 second joke I've ever seen

09.04.2025 06:33 β€” πŸ‘ 88662    πŸ” 27474    πŸ’¬ 880    πŸ“Œ 1257
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I am reading Daniel Levintins excellent book ”The Organized Mind” and this part perfectly explains why I sometimes get stuck in multi-hour obsessive TypeScript rabbit holes to create the perfectly (unnecessary) typed expression for a problem.

31.05.2025 12:36 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
code with me for 1 hour (cozy, soft typing)
YouTube video by bashbunni code with me for 1 hour (cozy, soft typing)

I love this format with @bashbunni.dev and I hereby promise publicly to try doing this. Also I so love the aesthetics and idea @charm.sh, makes me feel super great for some reason
www.youtube.com/watch?v=Qpz0...

26.05.2025 23:18 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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πŸ’› d3.interpolate (Number) | Dirty D3 - Episode 4
πŸ“Ό Full video: youtu.be/6Vn1TWyOsYo

#dataviz #d3js #fffn

26.05.2025 15:51 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

As such, if we can make things like clocks but that FEEL more like time (and I suspect that the sun must be heavily involved here) and find a more visceral standard we can help a lot of people

24.05.2025 08:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Oh my god this is amazing!! I have been obsessed with increasing the β€œviscerality” of time since I learned that a core contributor to the ADHD symptom cluster is having a neurology with a malfunctioning internal clock (an actual measurable part), massive amounts of other problems arise from that

24.05.2025 08:33 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

hmm should I make a Rough Regex course after my Dirty D3 series ends (in 2054)

23.05.2025 21:40 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

πŸ’›πŸŒ»πŸŽ‰ #dataviz

23.05.2025 21:38 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Day

also loved this one @pjpscriv.com pjpscriv.com/day/ been getting into visualising time lately

22.05.2025 22:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

God I love force directed graphs

22.05.2025 21:57 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

thank you soooo much for this, Nicole! πŸ’›I have never thought about the pull to open up the black boxes to be related to ADHD before (and when I think about it maybe I think it's rather more my less dominant autistic flair - but hey I'm not a neuroscientist, and it's an interesting thought πŸ˜ƒ

22.05.2025 21:47 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

πŸ’›It’s seldom one gets shoutouts for commercial partnerships, but @augmentcode.com really is that good - it’s really an incredible thing that a platform targeting large legacy codebases is free for OSS thx @adrienjoly.com

21.05.2025 15:12 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
What is interpolation, really? | Dirty D3 - Episode 3 (and "default interpolator"?)
YouTube video by Fun Fun Function What is interpolation, really? | Dirty D3 - Episode 3 (and "default interpolator"?)

New episode! πŸ“½οΈπŸ’›

What is interpolation, really? | Dirty D3 - Episode 3 youtu.be/LOaqG--VWas #dataviz #d3js

19.05.2025 22:09 β€” πŸ‘ 8    πŸ” 0    πŸ’¬ 1    πŸ“Œ 1
screenshot from the Mystical project. a visual representation of a PostScript file as several magical circles.

screenshot from the Mystical project. a visual representation of a PostScript file as several magical circles.

I'm obsessed with this:
Mystical, a visual representation of PostScript as magical symbols. What if software departments were catacombs of hooded figures scratching arcane circles into the dirt
github.com/denismm/myst...

(via @piterpasma.nl)

19.05.2025 11:57 β€” πŸ‘ 17    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

I love love love this example, really visceral way of unstanding variance

15.05.2025 20:29 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Great thread on dataviz animation ❀️

15.05.2025 18:01 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Aren’t this a weeeeee bit … I dunno. Are you genuinely interested in having a discussion about this and and find nuance or do you just want to state your opinion and aren’t actually open to there being something interesting here? Cool if not, just want to know before I engage further.

09.05.2025 20:59 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Prediction market - Wikipedia

I understand why one would be sceptical of a claim like this, but having watched West Wing I’m not sure why you’d have THAT high opinion of polls that a mere β€œlol” is sufficient. Prediction markets is a very old concept and isn’t tooooo shitty at predicting en.m.wikipedia.org/wiki/Predict...

09.05.2025 10:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Also it’s not quite clear to me to what extent this is a critique of prediction markets in general or polymarket (the crypto degen comment implies this, but not sure)? If it is the latter, did PM deviate significantly from other prediction markets?

09.05.2025 10:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Sorry, that was a bit facetious. I understand the critique, and maybe it’s warranted, but critiquing predictions is somewhat problematic if one does not do predictions themselves - thus my question implied what the OP used for prediction themselves (and how that went)

09.05.2025 10:36 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

What source did you cite?

08.05.2025 19:44 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
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Humanity may never be able to find a counter-example to Collatz conjecture if this package gets removed from npm.

01.05.2025 23:41 β€” πŸ‘ 135    πŸ” 3    πŸ’¬ 7    πŸ“Œ 0

Sorry for the radio silence. I was finding myself overextended and I had to do an abrupt refocus on getting videos out, and the newsletters naturally fell out of the rotation. I’m not gone, big things coming

01.05.2025 09:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I found this post today, years later (after searching for Vinge mentions on Bluesky and worries that he was a TESCREAL), and was very delighted (and amused) to read this as it suggests that he has multivalence. Thank you πŸ˜‚

16.03.2025 12:48 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Was sent this golden thing from 3 months ago written by @peck.phd

11.03.2025 13:30 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

mundus sine caesaribus

11.03.2025 13:07 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Are you sure you want to hide the ads in your editor

11.03.2025 10:51 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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