tslumley

@tslumley@fediscience.org

statistics. computing. genetics. choral music.
product of more than one country.
may contain nuts.

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tslumley, to random

Some quantitative graphical displays from my e-bike

https://notstatschat.rbind.io/2024/04/05/intuitive-graphics/

tslumley,

@ojala I don't do hardware, but it's a Riese and Müller bike and claims 75km on the 'tour' power setting.

tslumley,

@ojala the electronics are Bosch

tslumley, to random

Strings As Factors, no. Factors as factors, yes!

https://notstatschat.rbind.io/2024/03/22/factors-as-factors/

njtierney, to random
@njtierney@aus.social avatar

Just wanted to share a talk I gave remotely at the University of Auckland - something I care about a lot: Functions!

The talk was called "Practical Functions: Practically Magic", and tries to get at what I think is important about functions and how to teach them.

You can see the slides and materials here: https://github.com/njtierney/funfun

the example repository I used to demo a data analysis refactor is here: https://github.com/njtierney/ozed

Thanks very much to @milesmcbain for his helpful feedback on the talk in development, and also to the IDEM team.

Let me know if you've got any thoughts, keen to talk more about this.

tslumley,

@njtierney Great talk, Nick!

Minor quibble: Celsius has only one 'c' and Fahrenheit has two 'h's

tslumley, to linguistics

On the Seattle light rail, when you get to a station, the disembodied voice says, as it might be, "Doors to my right".

I don't have a problem with "Doors open on the right", where "relative to the direction of travel" is assumed, but for some reason the "my" always makes me wonder which way the disembodied voice is facing.

foone, to random
@foone@digipres.club avatar

more sci-fi should deal with the fact that your average Enterprise starship has a fuel tank measured in Chicxulubs of antimatter

tslumley,

@foone if you void the warranty, the new dominant species might be extremophile bacteria

steve, to random

In two months time, there's a total eclipse across N. America. The path of the total eclipse will...
(checks notes)
...miss Toronto by about 10km. It goes straight up Lake Ontario, so I can't even just head out to the suburbs!

Time for a trip to Niagara, I think!

tslumley,

@steve There really is a massive difference between total and nearly-total eclipse, because the sun is so bright. If you just have 0.1% of the sun, that's still 400 times brighter even than a full moon.

tslumley, to random

Troll moment, on an otherwise sunny day

bbolker, to random

Just read "by comparing the output with SAS®, which is the current gold standard for statistical programming" in the abstract of a paper published in 2020 ... (Granted SAS is really good, but "gold standard"?)

tslumley,

@kjhealy @bbolker a good idea in the past but is now understood to be unable to handle the modern world

FanCityKnits, to knitting German
@FanCityKnits@troet.cafe avatar

- February

A tangled skein and what it turned into.

A friend, who dyes and sells yarn, gave me the skein as it was completely tangled and it was unsellable because of that.

While untangling it just called "leafs" to me so leafs it turned into.

And a pattern came from it.

https://www.ravelry.com/patterns/library/alnus-cowl

Or on ko-fi https://ko-fi.com/s/7f1c4c5c03

@knitting @fiberarts

Same piece, this time worn as a hat.
Again same piece, this time worn as a cowl.
Similar to first picture, but a profile view instead of from behind

tslumley,

@FanCityKnits @knitting @fiberarts made me think of kākāpō

ojala, to random
@ojala@mastodon.nz avatar

deleted_by_author

    •
    tslumley,

    @ojala but Halloween is like communism: there's actually existing Halloween, which is completely consumerist, and theoretical Halloween, which is pure and unstained

    tslumley, to random

    package for mixed models in complex surveys. It exists!

    https://notstatschat.rbind.io/2023/11/21/linear-mixed-models-with-pairwise-likelihood/

    billbennett, to random

    While most of us are aware of Betteridge’s law of headlines, I think there is a subset of cases where the right answer to the news headline written as a question is DUH!

    tslumley,

    @billbennett there's certainly a "No shit, Sherlock" style of StatsNZ release headlines, but they typically aren't phrased as questions. This was one of my favourites

    foone, to random
    @foone@digipres.club avatar

    new module idea: PAM-floppy-OTP

    tslumley,

    @foone more interesting question: can you still fill a floppy with them after compression? How high is their entropy?

    ct_bergstrom, to random

    Google Scholar is a flaming piece of shit. Why do we use it for scholarly evaluation?

    Here, it misattributes 4873 citations — a decent count for entire research career — from Keeling and Rohani's landmark book, giving them instead to the authors who wrote a book review of the book.

    Yet, there's no correction or appeal process.

    Book review to which the citations are ascribed.

    tslumley,

    @ct_bergstrom It gives me 78000 spurious citations from a series of American Heart Association reports.

    billbennett, to random

    I subscribe to the New Zealand Herald (I also freelance for the Herald) Of course I’m OK with that. Journalists deserve to be paid for their work. But I do find it annoying when certain stories appear on the Herald site require yet another paywall subscription. My pockets aren’t that deep.

    tslumley,

    @billbennett I can handle 0 subscriptions. I can handle 1 subscription. But when it gets to 2 subscriptions I start wondering how long until 3,4,5...

    ct_bergstrom, to random

    If I were to set up a wordpress blog to write about bullshit, science, big tech, large language models, and all that, what would you think I should title it?

    tslumley,

    @ct_bergstrom Melted Eggs

    ojala, to random
    @ojala@mastodon.nz avatar

    deleted_by_author

    •
    tslumley,

    @ojala don't tell Gareth Morgan

    tslumley,

    @ojala he's just become a lot quieter

    tslumley, to random

    Vote early, vote exactly once
    https://vote.nz/2023-general-election/how-to-vote/find-a-voting-place/

    tslumley,

    @billbennett only so you don't get some unexpected problem on the last day

    grrrck, to random
    @grrrck@fosstodon.org avatar

    I just discovered that quarto slides have a "shuffle" mode and now I'm contemplating presenting at posit conf in chaos mode

    tslumley,

    @grrrck
    "Clouzot: But surely you agree, M. Godard, that films should have a beginning, a middle part and an end?

    Godard: Yes, but not necessarily in that order."

    tslumley, to random

    And an announcement: The Ihaka Lectures for 2023 -- Bringing Data to Life
    https://www.auckland.ac.nz/en/science/about-the-faculty/department-of-statistics/ihaka-lecture-series.html

    28/9: Anthony Unwin, on interactive graphics for data analysis
    12/10: Danielle Navarro, on generative art in R
    19/10: Chris McDowall on maps as data visualization

    These are live at the Uni of Auckland and will also be streamed and recorded.

    tslumley,

    The second of the Ihaka lectures for this year is this Thursday evening (Auckland, UTC+13)

    Danielle Navarro will talk about making generative art using the data visualisation tools in

    noneuclideandreamer, to physics German
    @noneuclideandreamer@mathstodon.xyz avatar

    So I'm trying to solve the heat equation numerically. (Here with 2 sources)
    But why doesn't it spread in a circle?

    I basically do

    f(x,y,t+1) = f(x,y,t)+c(f(x+1,y,t)+f(x-1,y,t)-2f(x,y,t))
    +c(f(x,y+1,t)+f(x,y-1,t)-2f(x,y,t))

    which is the numerical heat equation, right? Do I just need to finetune the c? Or maybe it's not actually a problem and my coloring takes small changes too seriously, after a while it looks nice...
    (I already fixed the central horizontal distortion?)

    video/mp4

    tslumley,

    @noneuclideandreamer is it that it's the heat equation for a space where (1,1) is two units from (0,0) rather than sqrt(2) units?

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