[R] Dates in 'persp' plots
josh.quigley at tibra.com.au
Mon Jul 16 05:49:42 CEST 2007
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  "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
I've checked help for 'persp' and 'par' with no luck - any ideas
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