r - 在R中创建一个名为 "paste"的变量？

Question

见下文:

paste("perf.a", "1", sep="")
# [1] "perf.a1"

如果我想给 perf.a1 赋值怎么办？

我尝试了as.name、as.symbol等，但没有效果:

as.name(paste("perf.a", "1", sep="")) = 5
# Error in as.name(paste("perf.a", "1", sep = "")) = 5 : 
#   target of assignment expands to non-language object
as.symbol(paste("perf.a", "1", sep="")) = 5
# Error in as.symbol(paste("perf.a", "1", sep = "")) = 5 : 
#   target of assignment expands to non-language object
noquote(paste("perf.a", "1", sep="")) = 5
# Error in noquote(paste("perf.a", "1", sep = "")) = 5 : 
#   target of assignment expands to non-language object

Answer 1

您可以使用assign ( doc ) 来更改 perf.a1 的值:

> assign(paste("perf.a", "1", sep=""),5)
> perf.a1
[1] 5