sin and cos Regression
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If I have an x and y data set and I want to make a sin and cos regression out of them how would I do that. I just want Matlab to plot it out, give me a best fit line, and an equation for the functions. Also I would like an R^2 for the best fit line. How would I do this? note:(I only have the college student version.)
回答（2 个）
Image Analyst
2013-10-19
0 个投票
Can't you just take the FFT and look for the dominant frequency? I'm not sure what a line means when you are trying to fit a sine wave to some data. Don't you want to find the best sine wave that goes through the data?
2 个评论
nicholas m.
2013-10-19
Image Analyst
2013-10-19
If you want something with more precision, then perhaps he is referring to SSA. See the wikipedia page at http://en.wikipedia.org/wiki/Singular_spectrum_analysis.
abraj ali
2018-9-29
0 个投票
In a single Matlab script, plot a sine wave and cosine wave over one period (0 to 2π). Checkpoints of the requirements: a. Generate your independent variable first; the step size should be no larger than 0.1 so that it has enough samples to get smooth lines. Plot the two waves on the same graph.
1 个评论
Image Analyst
2018-9-29
I think you meant to start a new question with a "tag" of "homework" because this is not an Answer to nicholas's 5 year old question up at the top.
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2013-10-19
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