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Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions [message #89630 is a reply to message #89615]

Sun, 02 November 2014 20:49

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Friday, October 31, 2014 11:12:03 PM UTC-4, siumt...@gmail.com wrote:
> My question is not resolved yet.
>
> Craig: Why you did not suggest me to use your MPFIT code for fitting my model.

You can use MPFIT if you want. As you mentioned in the original post, you knew about MPFIT already, so why did I need to suggest it again?

In any case, since an FFT does produce a least squares set of fourier coefficients, using MPFIT is kind of overkill.

You said this,

> I have attempted to used multiple linear regression to solve the problem .
> However, when I plot the original data with fitted line, I did not find good
> result.

So - given your model - how do you know there is a better result?

Craig

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[Message index]

		Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Fri, 24 October 2014 22:47
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Yngvar Larsen on Sat, 25 October 2014 08:59
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Sat, 25 October 2014 10:33
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Sat, 25 October 2014 10:51
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Yngvar Larsen on Sat, 25 October 2014 12:34
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Sat, 25 October 2014 16:00
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Yngvar Larsen on Sun, 26 October 2014 11:05
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Craig Markwardt on Mon, 27 October 2014 08:52
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Mon, 27 October 2014 19:16
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Sun, 26 October 2014 18:45
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Yngvar Larsen on Mon, 27 October 2014 06:03
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Fri, 31 October 2014 20:12
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Yngvar Larsen on Sat, 01 November 2014 07:57
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Yngvar Larsen on Sat, 01 November 2014 12:05
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: Craig Markwardt on Sun, 02 November 2014 20:49
		Re: Curve Fitting to timeseries using a set of 8 sine and cosine functions By: siumtesfai on Tue, 04 November 2014 15:14

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