A modernized fork of ZunZunSite3

[Kilo]

I want to start by thanking James R. Phillips for creating zunzun.com, ZunZunSite3, and pyeq3. This whole corner of the curve-fitting world exists because of his work. I also appreciate Ross Moffett for keeping findcurves.com running and for creating this group after zunzun.com went offline. Everything that follows is thanks to both of them.

Here's what I got up to: I wanted to run ZunZun on my own computer for more performance, but setting it up proved challenging. I had to track down the right versions of each dependency and patch some files by hand. It ran in the end, but it was fiddly enough that I figured it was worth doing properly. So I set out to get it running with the latest versions of Django, NumPy, SciPy, and the rest, made it cross-platform, and refreshed the interface a bit.

Now the project runs on Python 3.14 and Django 6.0, works on Linux, macOS, and Windows, and has an updated interface. I kept the dropdown menus, so it should still feel familiar. Some technical changes, like replacing the old scipy.odr with odrpack, also went back upstream into pyeq3, so the shared library benefits as well.

If you want to see it in action, you can try a demo at https://zunzun-ng.com. This is just a test preview, and I don't plan to host it permanently. It's not meant to compete with findcurves. The source code is available on GitHub at https://github.com/kiloscheffer/zunzun-ng under the same BSD-2 license as the original, so anyone can use, explore, or build on it.

I wanted to share this with people who might find it useful. I'd be glad to hear your feedback.

Thanks again,
Kilo

[Pat Fitzpatrick]

I'm a professort, and have used findcurves.com in my class when teaching empirical methods, but the website no longer works. I appreciate the new backup called zunzun-ng.com. However, I've had trouble using it, with typical errors about not specifying weights (even though I don't use the weight option), or when I do get it running, I get the following: ""Error: Your fit has finished, but there are no results to display - they may be already shown in another tab, or an error prevented the results page from being created..." etc.

I've tried a few other times....and waited a day for any any cache issues to clear....but the problems persist.

[Kilo]

If you provide the input data and the steps you take, I can try and see if I can find the issue. I have tested most of the functionality successfully with the default inputs.

Kilo

[Ross Moffett]

Kilo, it's my greatest regret I have not vibe coded the site up, I like what you've done with it outside some UI/UX issues I experienced.

A very specific walkthrough of the process that gets to an error is needed, data is helpful.  Then we can assess whether a fix is a short or long term effort. 

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