How can I find coefficients for a sinusoidal function?

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Zachary Fisher
Zachary Fisher 2018-4-20
回答： Star Strider 2018-4-20
The user inputs data in xy pairs separated into columns. The code is supposed to give a sinusoidal regression fit using only simple matlab functions, no toolkit or addons of any kind. I know the format is supposed to be Asin(B*X+C)+D, bud don't know what function can find these coefficients. I have very minimal experience with coding so some explanation would also be appreciated.

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Star Strider
Star Strider 2018-4-20

An oldie but a goodie: Curve fitting to a sinusoidal function (link)

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