On Sun, 25 Jul 2004, Min-Han Tan wrote:
> Hi,
>
> Sorry to trouble the list - I would like to ask a question - I can't
> find the answer in the r-help archives.
>
> I am trying to plot 2 survival curves in different colors.
>
> What I have tried is this
> plot(survfit(sim.surv ~ sim.km.smpl),col="red")
>
> but both the survival curves turn red...
Well, you did ask for them to be red :^)
The solution is to supply a vector of colors. For example
library(survival)
data(ovarian)
plot(survfit(Surv(futime,fustat)~rx, data=ovarian),
col=c("goldenrod","forestgreen"))
-thomas
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