finding slope of the graph

I need find the slope of the first cycle of this graph. If anyone has any ideas please let me kniow.

[John D'Errico]

Since a cycle is a periodic thing, the slope will vary from positive to negative. What do you mean by the slope of the cycle?

Is it the slope of the first part of that curve? If so, then just take only the first few points, and use polyfit(x,y,1).

[Viswajit Talluru]

Hey, dasically draw a line finding the avaerage of the entire curve and then find the slope of that line

Answer 1

[Kevin Holly]

I would suggest using the Curve Fitting Toolbox.