So I have a contourf plot and I am resetting the ylims so as to only display a subset of the full contourf plot. Is there anyway to set norm and the colorbar so they take their colormapping settings using the data currently on display? By which I mean: the full dataset has a range of 260-320. The reset axes limits display a region that only has values between 280-310. I'd like the colormap to extend over this range of values automatically, without having to set vmin=280, vmax=310. Any way to do that?