[R] filling area under a function line
Duncan Murdoch
murdoch at stats.uwo.ca
Sun May 24 22:29:00 CEST 2009
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
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