filling area under a function line
On 24/05/2009 2:50 PM, Tom H wrote:
On Sun, 2009-05-24 at 19:32 +0100, Tom H wrote:
polygon( c(from, x, to), c(min(y),y,min(y)), col=areacol, lty=0 )
I guess my question should have been, I don't seem to be able to query or "reflect" a plot object to get at its attributes to fill in the polygon call, without actually modifying the curve/plot function.
There isn't an easy way to get what you want. Modifying curve() to return the x and y vectors seems like a reasonable thing to do; I'll take a look at that. Then your areacurve() wouldn't need to reproduce all of curve(). Duncan Murdoch