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Show HN: An easy-to-use online curve fitting tool (byx2000.github.io)

35 points by byx ↗ HN
This is a powerful online curve fitting tool that supports fitting dozens of commonly used functions and implicit functions. It features a clean interface and simple operation. If you need to perform curve fitting but don't want to learn professional software like Matlab or Origin, you can try this tool.

8 comments

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okramcivokram
It'd be nice if there was some demo data because I might want to play with it to see how it works, but don't have any data to use it on.
cb321
The fit diagnostics at the top of the plot are inadequate. This needs at a minimum error estimates on the estimated parameters (probably bootstrap) and ideally some kind of "error envelope" on the plot.
iSpiderman
Very nice. I will use this at school to quickly produce fits. File import does not seem to work though...
byx
Thanks for the feedback, this bug has been fixed.
monkeydust
Pretty sure this could replace one of my junior quants!
abdullahkhalids
Would be very nice if I could copy-paste data straight from a spreadsheet software.
murphyslab
Not to cast shade, but it looks like you've essentially built a front-end for Desmos. It definitely makes things faster than trying to do it directly in Desmos.

Suggestion: Most of the fits that you've done assume that the errors are normally distributed. It would be worthwhile adding some graphical or numerical checks on that, rather than having goodness of fit or visual inspection be the only indication if this is a faulty assumption.

It gave made for a good quick check testing some data I had.

doppelgunner
Hey,

I really like your tool and thought you might enjoy sharing it on NextGen Tools, a Product Hunt alternative: https://nxgntools.com

I’d appreciate any feedback and would love to hear your thoughts.