Hello R-sters Is there a way to force e.g. the y-axis of a persp()-plot to show not equaly spaced labels but the ones you can give in the "y="-command? I tried persp(....,y=c(0.1,0.5,0.7,1),...) but the labels were 0.0:1 by 0.2 I'm looking forward to your help Andy --