[R] How to set default plotting colors by treatment?

[Polwart Calum (County Durham and Darlington NHS Foundation Trust)]

>
> # I tried defining a function like this
> myplot <- function(...)plot(..., pch=19, col=c("blue","red")[treatment])
>
> # So i can call it like this:
> with(mydfr, myplot(Xmeas, Ymeas))
>
> # but:
> Error in plot.xy(xy, type, ...) : object 'treatment' not found
>
basically that is something like calling:

myplot( mydfr$Xmeas, mydfr$Ymeas )

So plot doesn't know that treatment is within mydfr...

changing your function to:

myplot <- function(...) {
plot(...,
       pch=19,
       col=c("blue","red")mydfr$[treatment]
      )
}

should work?

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