[R] plot survival points

[Thomas Lumley]

On Thu, 2 May 2002, Ronaldo Reis Jr. wrote:
>
> Hi Thomas
> I try it, but the graphic make is not a point graphic, is a ?scale? plot,
> like this:
>
> |_
> | |_
> |   |
> |   |__
> |      |_
> |        |_
> |_____________
>
> I need the same graphic, but with point like this:
>
> |
> | *
> |   *
> |   *
> |       *
> |         *
> |____________
>

Here's an example of superimposing points on lines for two groups

library(survival)
data(aml)
#fitted exponential models
curve(1-pexp(x,rate=0.04314),col="green",from=0,to=150)
curve(1-pexp(x,rate=0.01655),col="blue",from=0,to=150,add=TRUE)
 fit <- survfit(Surv(time, status) ~ x, data = aml)
 points(fit[1],col="blue")
 points(fit[2],col="green")


	-thomas



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