#pyqt — Public Fediverse posts on home.social

I'm on this project where we want to do #realtime #radar but are sort of starting with nothing (apart from world-class radar transmitters, receivers and expertise...)

One very smart but non-#software person wrote a bunch of good #signalprocessing #code and some "gets the job done" #gui code

Or it did until we went higher bandwidth

Last week I rewrote all the non-sigproc parts into #pyqt and #pyqtgraph. Today I benchmarked both.

Exactly the same speed....except pyqtgraph is

THREE ORDERS OF MAGNITUDE

faster than #matplotlib

#python peeps, please hear me. mpl has its place and uses. High data rate animated displays is not that place.

#realtime #radar #software #signalprocessing #code #gui

dr 🛠️🛰️📡🎧:blobfoxcomputer: @[email protected] · 2026-01-28 · 12:45 UTC

It's one of THOSE days

I overslept by an hour. The tuxedo #cat had to use his little paws to roll me out of bed. (He was hungry but worse I was not On Schedule, something he cares about a LOT)

But also I only had to get up early because #IT made some change on my laptop that prevents me from logging in to #wfh

When I got here, I found that a request I put in to unlock an unrelated account on a different network had ALSO not been done. But at least the ticket is closed!

And the thing I have to work on is annoying. A project I definitely want to be on needed a display. I made one in #python #pyqt #pyqtgraph.

Oh, they meant a #web #app. OK, so I redesigned the backend to both would work.

Everyone likes THAT except for some external guy who AFAICT hasn't done any actual work on this project. The only reason his opinion matters is that he's the one actually deploying the app...?

And instead of modifying the code to be how he wants it he wrote a sample app for ME to follow?

And I don't think that's even going to work. #plotly needs a session ID to get persistent zoom and some other things right. This guy's design means everyone has to share a session ID. I explained this to him.

So the outcome of starting from his code is either that I'll be proved wrong or I'll have wasted a day proving HIM wrong. Two wonderful possibilities.

#cat #it #wfh #python #pyqt #pyqtgraph

Habr @[email protected] · 2025-08-24 · 09:52 UTC

Иконки прямо в коде: как мы избавились от assets, портируя приложение на Linux и macOS

Привет, Хабр! Мы в ChameleonLab разрабатываем тулкит для стеганографии, который уже работает на Windows и macOS . Сейчас мы портируем его на Linux, и, как это часто бывает, именно на этом этапе классические проблемы с ресурсами (иконками, картинками) проявили себя во всей красе. После релиза пользователи увидели наше решение и стали спрашивать, как оно устроено и почему приложение не тащит за собой папку с картинками. Раз уж сообществу это интересно, мы решили дать развёрнутый ответ. Расскажем, как встроили все иконки прямо в код с помощью SVG, и как внутренние итерации и поиски идеального решения привели нас к финальному варианту.

https://habr.com/ru/articles/940180/

#python #PyQt #PySide #Qt #SVG #векторная_графика #ui #PyInstaller #hidpi #кроссплатформенная_разработка

#кроссплатформенная_разработка #hidpi #pyinstaller #ui #векторная_графика #svg

dr 🛠️🛰️📡🎧:blobfoxcomputer: @[email protected] · 2025-06-06 · 14:59 UTC

#dataviz is critical, but I don't think in pictures, I think in spatial relations and movement (is this an #adhd thing?)

Movement happens in time and you usually want to viz the time axis all at once, so I've trained myself to turn "$variable vs t" into mental motion

Other times you need an interactive #ux and that usually means 3D

I love love love #pyqtgraph for #python plotting but they will be the first to tell you the 3D needs some love

My punfully-named work project has proved to be a hit[1] and I managed to get an 30y-experienced #software #developer *with an #astronomy degree* assigned to it. (This is a #space application)

She agreed that the 3D portion was neat but hard to use. She found #vtk, which seems to be the perfect partner because it does 3D really well, stays out of 2D and has a #pyqt connector.

I just worked through a tutorial and, yeah, this could be a huge breakthrough in my viz apps.

[1]They think they want to change the pun name but they are wrong. An unforgettable name is money in the bank.

#dataviz #adhd #ux #pyqtgraph #python #software

Grant_H @[email protected] · 2025-03-25 · 15:28 UTC

Achievement get: I have #Python code that can algebraically create #hypergraphs - graphs with n-ary edges.
Now to be able to do that in a graphical editor!
Trying to unravel #PyQt scenes!

#python #hypergraphs #pyqt

Eric Mesa @[email protected] · 2024-04-28 · 19:04 UTC

Programming Jan-April 2024

This year started off pretty light when it came to programming because I’ve been addicted to the video game Against the Storm since last winter. But I eventually started working again on various projects – some old and some new. I didn’t do any programming in January, so we’ll start in February.

February and March

Over these two months I worked on my replacement for web access to my Taskwarrior TODO list because Inthe.am had shut down. In February I got the podman containers set up – one to run the taskd server and one to run the website I’d coded up in Flask. In March I had to write some rudimentary Javascript to get the website to highlight the selected tab (Overdue, Today, This Month, etc). The rest of the interactivity on the site works using HTMX, letting me focus on Python instead of Javascript, but I just wasn’t able to get that part of the site to work without a tiny bit of Javascript. I also added some fixes because the date/time widget assumes UTC. Of course, now that I have it all working correctly and get lots of use for it (especially when I’m at work and I want to quickly get something out of my brain’s short-term buffer), Taskwarrior went to 3.0 which completely changes the way the program works, the API, and the way syncing works. I think in the end it’ll be for the best, but it’s annoying that I need to figure this out. That may involve finally learning how to use PyO3 to interact with Rust or re-writing part of my backend in Rust. We’ll have to see where that goes.

April

Things really picked up in April, programming-wise. First off, I had to upgrade the dependencies in my Amortization program. This will segue into the next topic in a second, but essentially every time I upgrade Fedora, I get a new version of Python. This means I have to redo my virtual environment. So when I tried to run this program again, I had to pip install my requirements and since some of the packages were no longer available on PyPi as wheels, it tried to compile. When that failed, I upgraded the dependencies.

As I’ve mentioned before, because of the virtual environment annoyances, I’ve decided to rewrite all my cron utilities in a compiled language. If it’s a utility I have running via cron, it’s something I want to work all the time. I don’t want to have to run around recreating virtual environments (something I don’t mind for a program I’m going to run occasionally – see previous paragraph). So I rewrote my NASA background downloading program in Go. This was a real breeze. It truly is a pretty easy language to work with – a hybrid of C and Python in my humble opinion. I also used the opportunity to learn how to use Go’s new(ish) SLOG package.

I also took a few days to update the one project I know for a fact is used by other people besides myself, Extra Life Donation Tracker, to use PyQt6. It was an annoying couple days figuring out what has changed since PyQt5. Or rather, to be more specific, the Qt devs did a great job documenting what had changed, but seeing how that translated to what I needed to fix for pyinstaller to make an exe for my Windows users took a few days.

As I mentioned a couple days ago, I’ve started learning Rust. Just as I did with Python when I first learned it, I started with a project-based book: Command-Line Rust. However, while I was getting a good feel for the language, the author wasn’t quite explaining some concepts early enough (to my mind) like when to use a double colon vs a dot to access a function/method. So I started also reading The Rust Programming Language (2018 version) (link is to the newer 2021 edition). There I learned that (using Python terms) double colon is a static method (would belong to the class as a whole) while dot is a method on an instance of the “class”. While I probably could say the same thing about modern C++ or C, I think Rust is actually a good stepping-stone on the path that goes Python->Go->Hard Systems language. As a newer language with less baggage, it seems to be a child of Haskell and C, with functional programming being a first class way of programming in Rust. (I may be speaking out of my butt since I’m only a week or so into learning the language, but that’s my first impression).

Going back to what I said about rewriting my cron utilities in compiled languages, I may end up rewriting Snap-In-Time, my btrfs snapshot project in Rust. Based on what I did in the first project of Command-Line Rust, it seems like it would be pretty trivial (compared to Go) to retrieve and use the output of system commands (like btrfs sub snap, btrfs sub del, etc). If this happens, it’s probably a few months away.

Speaking of future projects, over at my personal Mastodon account (started before WordPress joined the Fediverse or I might have only used this account as my Fediverse presence) @djotaku I post my top scrobbled artists every week. (Here’s an example) This is another cron utility that I would prefer not to have to be mindful of when I upgrade Python (although, in comparison to the other utilities, it’s also the most trivial). I’m thinking of redoing this one in Go as (as of this point) interacting with a JSON API seems easier than in Rust. I’m basing that from looking on crates.io at the last.fm crates on there. Most of them are older (makes sense since a lot fewer of us still scrobble to last.fm than in its heyday) and none of them covered the endpoints I needed so I’d have to write my own. One last thing – even though many folks aren’t scrobbling anymore, they must be getting information from somewhere (I thought CBS either sold last.fm to Spotify or did a partnership) because this article mentions the researchers using it to analyze song lyrics.

#Amortization #eldonationtracker #ExtraLife #Flask #Go #Golang #HTMX #Javascript #lastFm #NASA #Podman #PyQT #python #QT #rust #Taskwarrior

https://wp.me/p5cs3g-4I3

#amortization #eldonationtracker #extralife #flask #go #golang

PyQtGraph @pyqtgraph · 2024-04-21 · 13:39 UTC

#PyQtGraph 0.13.5 is out! While not our largest release, it has something for everyone! Note, this release is the last to support #Python
3.9 and #NumPy 1.22.

First, ImageItem got another substantial performance boost, especially if you're using #numba but there is a significant boost for #NumPy users as well.

A ColorMapMenu was added to ColorBarItem, allowing for users to be able to change color maps interactively instead of programmatically.

#DataViz #PyQt #Qt

#pyqtgraph #python #numpy #numba #dataviz #pyqt