chipx86, to random avatar

Why yes, I should use D3.js.

BUT I now have experience writing code to generate a containing a multi-segment donut with different inner and outer radiuses, uniform gaps around segments, and minimum segment sizes.

Bonus: "Maximum Donut."

metin, to animation avatar
stephane_klein, to PostgreSQL French avatar

Je viens de publier un de , un moteur de base de données orienté .

J'ai découvert Neo4j vers 2012, mais jusqu'à aujourd'hui, je n'avais jamais pris le temps de creuser le sujet.

J'ai appris à utiliser le langage de query . J'ai trouvé cela très pratique.

Prochaine étape : tester l'extension de Graph

metin, to math avatar
ziegenberg, to microsoft avatar

Does anyone have an idea on how to get details about internal server errors in the API?

The problem: We make a PATCH request on a specific resource. The request is correct (following the documentation) and successful (all changes are applied), but nevertheless we receive an internal server error in response with no details.

We've had to deal with a lot of bugs in the API, but if you can't distinguish successful requests from incorrect ones, that's very unfortunate.

Sevoris, to scifi

One of my favorite hard #scifi topics that I love to work within (even if I am terrifically starved for time to do much about this at the moment) are wormhole networks.

They have interesting geometry constraints once you add real star maps, #optimization challenges when it becomes time to figure out how many connections you need to connect what places while observing construction and shape constraints…

it is the kind of #graph computer science that tickles my brain extra being scifi nerdy

ekis, to math avatar

Soo been obsessing over matrix & theory

Thinking options for most efficient application using concept of a merkle tree for a matrix; still requiring efficient merkle verification (tree=type of graph)

Saw merkle field= each layer, merging into node

merkle tree isnt only classico binary

But low-res; so horizontal+vertical row hashing=faster & then found A sci-article; just 1 on subject & 0 libs

Goal= (+) merkle matrix library

Expanding on the Merkle Field, instead of just dealing merging horizontal rows, we merge vertical rows and then you have two routes to verification, and still few verification but still not very resolute. In order to verify a single block without the row you are required to do both verification steps. Or wait untill you have a horizontal row or vertical row and simply do one verification step.
The real magic is when you take the binary Merkle Trees to represent vertical and horizontal rows, and then merging those two trees into the root node for a single merkle matrix. Now what I think would be interesting is both using 4, resulting in 4 roots, and you only need a single 1 to validate any block quickly within the matrix. And then different members of say a network could have different trees to offer for validation. Most importantly, I want to take this and add an extra dimensions (probably more than 1), and I know about verkle trees but I don't want a simple tree, I want a sparse matrix ideally, or a 3D matrix, using at least 3 trees, combining into a single root node. This could be used for verifiable time series data. What I plan to do is store essentially a mutable torrent inside each block in the matrix. And changes are represented over time as each "stack" is added to the matrix to make it 3D (or more)

tykayn, to random French avatar

that's what i call a firm

jonny, to random avatar

thimkin bout again

decompwlj, to math
rooster, (edited ) to trans avatar

Water is a molecule with two hydrogens and an oxygen. Sometimes, instead of hydrogen it has deuterium, which has an extra neutron. This is heavy water.

It’s a kind of water because, while rare, it naturally occurs and when it’s in the mix it all acts, looks, and reacts just like “normal” water. We didn’t know what we called water was mostly “light water.” We learned there’s more than one kind, and that’s neat.

Heavy water is water.

This is a post about #trans people.

seanhoyer, avatar
joshuagrochow, (edited ) to random avatar

The Hoffman-Singleton graph can apparently be constructed as the Cayley graph of a magma:


  • isn't a quasigroup
  • has a 2-sided identity (0,0,0)
  • isn't associatve
  • isn't commutative

What is this magma?? Anyone have any ideas?

I think when the first coordinate is zero, the corresponding 25 elements are a copy of the cyclic group of order 25 (generated by (0,1,1)).

thomas, to webdev avatar

If you - like me - run an XMPP server, have a look at @guusdk 's XMPP network graph and register your server so that it is displayed.

All you need to do is install a small module for Ejabberd, Prosody and other XMPP software. :-)

WebGL version of ther graph:

More information:

suonoreale, to random German avatar

Anyone using a #zettelkasten tool like #obsidian, #joplin, #roamresearch etc) - do you really use the graph view and what does it help? How do you integrate it into your workflow?

I first thought I'd try it because I love mindmapping a lot, but I couldn't really make use of the graph so far.


secupriv, avatar

@suonoreale it can be useful to identify (unexpected) relations, but you have to put some effort in filtering and grouping, besides playing a little with the depth and toggling the neighbor links.

The thing is that it can be quite an effort. That’s why I hope next release supports saving your graph settings.


EricCarroll, to random avatar

My furnace has failed.

I get to have a bunch of people in my house shortly to replace it before the Big Ontario Freeze descends on Saturday.

I feel like - I am having a constant dialogue with my threat & risk assessment module.

I will have to treat my home as a biohazard environment for most of a day.

& HEPA & oh my.

Replacing a furnace on a pipe-busting deadline is complicated & stressful.

Doing it while in today's world is 10x more complex and 100x more stressful.

If you recall my sailing analogy, we have to have a formal family safety briefing & contingency planning before it all gets started.

Then we have to maintain safety situational awareness while working a task on a deadline.

EricCarroll, avatar

Time to break out my favourite and reports for to get the ball rolling:

Number of people in a room vs .

Last @MoriartyLab prevalence report was 1 in 13 or ~7.7% for Ontario.

That was for period ending Dec 29. Its definitely gotten worse.

I love the optimism of the early pandemic where 10% was considered top of the likely prevalence for risk assessment as shown by the chart.


funhouseradio, to Meme avatar
renwillis, to Sleeping avatar

The Chances of Me Falling Back To Sleep: A Graph by Me

coocook, to random avatar

Why we've changed our database schema 26 times until now:

  • make Coocook easier to use by simplifying required input
  • add new features like organizations (groups of users)
  • add missing metadata like creation timestamps

Longer gaps are difficult changes that took long to prepare:

  1. add database versioning in the first place
  2. drop infamous table "quantities" that connected units that can be converted, like "masses" with lb and kg, etc.🙈
claras_universe, to ComputerScience avatar

I worked with python to practice graph theory which can be very bland when only studied theoretically xD Does anyone have any ideas what else I could add? Maybe even some potential use cases so that those graphs become a meaning? I'm a bit lost now but it was so fun to do and I wanna continue to do more stuff with it c:

gflewell, to python

So I typically use #python for scripting. Data processing, plotting, and even a few small ML models for work. I just got a new computer, and thought I would survey ways to manage my environment. Spent some time with direct venvs, then looked at Poetry, and ended up right back where I always do: conda/mamba (mamba is so fast now). Conda, though super powerful, was slow. But now with mamba it feels lightning fast. Venvs/Poetry worked well, but if I needed to revert, modify, and not just add more packages, it seemed like more work.


@gflewell @diazona

In a #nutshell, what you're #locking is your #dependency #graph. i.e. your project says you need the requests package v.1.2.3 or later, plus the pandas package version 2 (not 3, you haven't upgraded your code yet).

Those each drag in a bunch of other dependencies, each with their own #version #requirements. One of them might say "I need pandas > 2.3.4". Multiple ones might all need requests as well, but specify different version constraints.


underdarkGIS, (edited ) to random avatar
totetmatt, to random French avatar

So the Bluesky plugin is released ! You can fetch it directly from the plugin manager inside the software. It allows you to explore the followers / followings relationships of the network. Here is a Fast Tutorial

metin, to Creativity avatar
underdarkGIS, (edited ) to random avatar

Exploring a hierarchical -based model for representation and analysis

Today's post is a first quick dive into (really just getting my toes wet). It's based on a publicly available Neo4J dump containing data, ship trajectories to be specific.

LabPlot, to foss avatar

We've reached 600 subscribers on our YouTube channel. Thank you! ❤️🤩

Let's get it to at least 700 subscribers 🚀🙂


#FOSS #FLOSS #OpenSource #FreeSoftware #LibreSoftware #GNU #KDE #Software #Graph #Plotting #Education #Tutorial #Statistics #STEM #LabPlot

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