Rhino Grasshopper - Making a Parametric Spiral on New Blog Designalyze

Thanks for all your help getting me set up and for lighting a fire under my ass to do it in the first place.

I have an unrelated question to this tutorial but i am not sure where to write it so i will write it here. Let’s say i make a sine curve through a number of points in grasshopper. And then I want to array that curve a number of times, but with each array, the sine curve will shift a little bit, under the control of a slider. How can I do this? It doesnt have to be a sine curve, just any curve that you want to control the Cpoints on each successive line in the array.