## Make some data for varmint life
set.seed(1); l1 <- rnorm(120, 2.5, 1)
gerbils <- data.frame(life = l1[l1>0])
set.seed(3); l2 <- rnorm(120, 3, 1)
hamsters <- data.frame(life = l2[l2>0])
## Load required packages
require('survival'); require('GGally')
## Generate fits for survival curves
## (Note that Surv(x) creates a Survival Object)
sf.gerbils <- survfit(Surv(life) ~ 1, data = gerbils)
sf.hamsters <- survfit(Surv(life) ~ 1, data = hamsters)
ggsurv(sf.gerbils) #Survival plot for gerbils
ggsurv(sf.hamsters) #Survival plot for hamsters
## Combine gerbils and hamsters while adding column for identification
varmints <- rbind((cbind(gerbils, type = 'gerbil')),
(cbind(hamsters, type = 'hamster')))
## Generate survival for fit for all varmints as a function of type
sf.varmints <- survfit(Surv(life) ~ type, data = varmints)
## Plot the survival curves on one chart
ggsurv(sf.varmints)
1 回答
为了仓鼠和沙鼠的生命,我在下面生成了一些数据 . 您可以使用类似于其他曲线拟合函数的survfit()函数,并定义一个分割总体的数据框列 . 当您使用ggsurv()创建绘图时,我认为它将显示您要查找的内容 .