stuffmatic

5 ms·

1. 1.▲
   by stuffmatic 2y ago

   Yes, that is a bug, good catch. The app should show an error if the function is not defined in all chebyshev nodes. Like you have already discovered, it's easy to work around this issue for now.
2. 2.▲
   by stuffmatic 2y ago

   You could look into using the ChebyshevExpansion class directly. It takes as one of its arguments a callback that returns f(x) for a given x. In your case, f(x) would be your sensor values with some suitable interpolation. A more ambitious
3. 3.▲
   by stuffmatic 2y ago

   Thanks for the kind words. I also found it surprisingly hard to find working Chebyshev approximation code. Hopefully this project will change that :)
4. 4.▲
   by stuffmatic 2y ago

   Or, since the function expression is just JavaScript, singularities can also be avoided like this: x == 0 ? 1 : Math.sin(x) / x
5. 5.▲
   by stuffmatic 2y ago

   Thank you! Yes it does feel a bit magical, both the mathematical aspects and the fact that it all boils down to a few lines of code in practice.
6. 6.▲
   Show HN: Chebyshev approximation calculator(stuffmatic.com)

   278 points by stuffmatic 2y ago|51 comments
7. 7.▲
   by stuffmatic 6y ago

   Yeah, I don't currently have any plans to release the code unfortunately. But in short it's a scenegraph library written in typescript plus a sprawling collection of algorithms in various states of completion. The scenegraph can b
8. 8.▲
   by stuffmatic 6y ago

   By popular demand, I've added Atom feeds for blog posts and projects: https://stuffmatic.com/feed.xml https://stuffmatic.com/feed/projects.xml
9. 9.▲
   by stuffmatic 6y ago

   I love pendantic notes! Steiner chains, Thurston's notion of circle packing and circle packing as an optimization problem are quite different from a theoretical point of view. However, they all have one thing in common, and that is tha
10. 10.▲
    by stuffmatic 6y ago

    Thanks for the kind words! I'm using a custom built javascript framework that runs in a web browser. Should probably have mentioned this in the post :) Others have requested RSS too, by the way. I'll look into it.
11. 11.▲
    Parametric lamp design using circle packings(stuffmatic.com)

    206 points by stuffmatic 6y ago|31 comments
12. 12.▲
    Making a Pentagonal Tiling Puzzle(stuffmatic.com)

    1 points by stuffmatic 6y ago|0 comments
13. 13.▲
    by stuffmatic 7y ago

    The tools are written in typescript and run in a web browser. I use vue.js to build interactive GUIs.
14. 14.▲
    by stuffmatic 7y ago

    Thanks for the kind words!
15. 15.▲
    by stuffmatic 7y ago

    I've been asking myself the same question :) There's just something irresistibly tacky about cigarettes as a design element.
16. 16.▲
    Adventures in parametric textile pattern design(stuffmatic.com)

    41 points by stuffmatic 7y ago|12 comments