I am wondering if there is a class for fitting data to a sine curve. I found an algorithm for it here but it would take some time to first understand and then code... Before I go down that road I am wondering if the forum knows of a class that is already created for such mathematical modeling.
C# does not have a long tradition of scientific computing libraries...
My take would be to get one of the numerous numerical computation routine packages (like on of them, or the Numerical Recipes) in C/C++, and wrap it under C#.
See also this Math.SE post.
On the commercial side, NMath library has a MultiVariableFunctionFitter class that is would be perfect for you.
Finally, see this Wikipedia list.
来源：https://stackoverflow.com/questions/6033874/sinusoidal-fitting-classes-for-c-sharp