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I have a table of xy data which needs to be modelled using a damped sine wave. What Windows program (preferably free or trial) can do that for me?

There are over 600 data points per model.


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If you're going to fit a "damped" wave (what is your definition of a damped wave, anyway?) to your points, know that fitting oscillatory functions can be a difficult problem. You might want to post a scatter plot of your points here... – J. M. Apr 30 '11 at 4:51

I happen to think that R is a great, free piece of software for plotting pretty much any set of data points you want. To be fair, I haven't used it in about a year, but I expect that it will suit your needs. You can find more about it .

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