TH2F Contour plot with z bin in [0,1]

Dear support,

I would like to plot contours of my 2D histo, but actually nothing happens using options contz , or cont1,2,3… My histogram is the result of a division between two TH2F, and has z values between 0 and 1 (ie non integer values). It might be why contours are not plotted.
I use root 3.10/00

Note that the suf3 option shows the contours projected, exactly what I’d like to have using the contN options…

Thanks a lot,

Guillaume Blanc

May be you encountered what is described here:

It seems so: it actually works now, using h->SetEntries(1); before plotting!

Thanks a lot!
Guillaume Blanc