嗨,我对R来说是全新的.这是我第一次尝试它.我正按照年龄制作生存情节.我无法弄清楚如何为每个年龄段指定颜色并将其放在图例中.有人可以帮忙吗？
require(survival) # not loaded by default although installed by default
group <- age
kmsurvival1 <- survfit(Surv(as.numeric(time),event) ~ group)
plot(kmsurvival1, xlab="Time",ylab="Survival Probability", mark.time = F)