No, you don’t understand. What you see are not markers, they are bin contents. To see them bigger you have to zoom, or to decrease the bin numbers. Simply try with 50 bins in x and y, you’ll see what I mean…
Hi @bellenot, I see What you mean, but is it just for COLZ typology or for all TH2F plots?
It’s for TH2 in general
thank you @bellenot !