How to smoothen a plot in MATLAB?

Question

I have some 9000 points that are plotted on a graph:

[Full resolution]

Actually, the plot is n

Answer 1

I'd first try to display the running average over a number of points, like 5 or 10. This way, a single discrepancy in the values only have a little impact on the graph. Of course, it depends on how accurate you need the graph to be.