hie
when i use plot.survfit to plot more than one graph why I only see the last
graph how do i see the other graphs.for example
n=20
n1=n/2
n2=n/4
a11=4;a12=4 ;a21=4 ;a22=4
t1<-array(1,c(n1))
t2<-array(2,c(n1))
treatgrp=matrix(c(t1,t2))
st11<-array(1,c(n2))
st12<-array(2,c(n2))
st21<-array(1,c(n2))
st22<-array(2,c(n2))
strata=matrix(c(st11,st12,st21,st22))
time11=array(rweibull(n2,a11,1))
time12=array(rweibull(n2,a11,1))
time21=array(rweibull(n2,a21,1))
time22=array(rweibull(n2,a22,1))
time=matrix(c(time11, time12, time21, time22))
censorTime=runif(n,0,3)
m=cbind(treatgrp,strata,time,censorTime)
colnames(m)=c(treat,strata,time,censorTime)
act.surv.time<-pmin(m[,"time"],m[,"censorTime"])
m<-cbind(m,act.surv.time)
m<-cbind(m,0)
m[m[,3]<m[,4],6]<-1
colnames(m)[6]<-"censoring"
m
b=data.frame(m)
d2=survfit(Surv(act.surv.time,censoring)~treatgrp,data=b,type=c("fleming-harrington"),
)
plot(d2, lty=2:3, fun="cumhaz",
xlab="Months", ylab="Cumulative Hazard")
d1=survfit(Surv(act.surv.time,censoring)~treatgrp,data=b,)
plot(d1, lty=2:3,
xlab="Months", ylab="survival curves")
I only see the plot of d1 what happens to d2 and how do l view it.
thanks
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