Multiple piecewise linear fitting equation extraction
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Hello,
I am trying to obtain a linear curve fitting equation at every falling edge (or rising edge if fliped) of a long sorted (descending/ascending if fliped) power duration curve. From some research, piecewise linear fitting seems to be one solution, however, I couldn't find any tool in Matlab to get equations for severla chunks of a curve.
Is there an easier way to obtain these equation other than manully doing it using the curve fitting toolbox in the matlab?
PS: With reference to the attached image, whats needed is an equation for the curve between falling edges (chunks).
Thanks,
回答（1 个）
Sulaymon Eshkabilov
2021-8-4
0 个投票
Yes, it is viable. There are a few discussions in MATLAB community how to do such regressions. Here is one of them: https://www.mathworks.com/matlabcentral/answers/264701-piecewise-non-linear-curve-fitting-for-a-specific-type-of-data
And here is a code in published in MATLAB Central on piecewise linear fit: https://www.mathworks.com/matlabcentral/fileexchange/40913-piecewise-linear-least-square-fit
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2021-8-4
2021-8-4
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