Hello, I would like to have the y axis show dates in a 3D 'persp' plot. The following example works... x <- spot y <- as.numeric(dates) # class(dates) produces output [1] "Date" z <- t(price) persp(x, y, z, ticktype="detailed") ...however the y axes contains 'meaningless' integers (days since 1970-01-01 is not very intuitive!) Changing the commented line above to y <- dates is no good because 'persp' automatically coerces input to numeric types. I would really like the axis to be labeled with dates. A string, eg "13-Jul-2007" would be best, but ISO date integer, eg 20070713, would also be acceptable. I've checked help for 'persp' and 'par' with no luck - any ideas appreciated! Cheers, Josh.