Why is this needed:
I have data that cyclically changes (e.g temperature of a heated room) and would like to use the regression Transformation on it. The problem is that if I select the highest order possible (quintical), it can only have a finite number of minima and maxima.

What would you like to be added:
I would like to have the function types f(x)=a*sin(b*(x-c))+d and f(x)=a*cos(b*(x-c))+d added to the Regression Transformation.

Who is this feature for?
It is for everyone who has data that changes like a sine function (e.g has a fixed amplitude and period.