r-获取错误(下标)逻辑下标太长

Question

我正在尝试运行以下代码，但我遇到了这个错误松开(x([i时出错，drop=FALSE]：(下标(逻辑下标太长

library ( survival ) 
library(KMsurv)
data("tongue")
tongue
Weibull.1<-survreg(Surv(times,censor)~1, data=tongue, subset=(group==1),scale=1,dist="weibull")
Weibull.2<-survreg(Surv(times,censor)~1, data=tongue, subset=(group==2),scale=1,dist="weibull")

如何避免此错误？

Answer 1

我真的不确定你在做什么。数据集中不存在您指定的所有变量。Tongue只有3个变量，即type、time和delta。如果你改正了这些，你就会得到答案。

survreg(Surv(time, delta) ~ 1,
data = tongue,
subset = ( type == 1),
scale = 1,
dist = "weibull")
Call:
survreg(formula = Surv(time, delta) ~ 1, data = tongue, subset = (type == 
1), dist = "weibull", scale = 1)
Coefficients:
(Intercept) 
4.911231 
Scale fixed at 1 
Loglik(model)= -183.2   Loglik(intercept only)= -183.2
n= 52