创建以名称作为参数的R函数？

假设我有一个如下所示的数据帧：

df1 <- data.frame("long name 1"=c(rnorm(n = 100, mean = 0, sd = 1),NA),
                  treatment=sample(x = c(0,1), size = 101, replace = T))
names(df1) <- c("long name 1", "treatment")

---

有什么方法可以满足我的要求吗？

最好在选择列的函数中使用

[[

而不是

$

test.f <- function(data, vname, tname, tvalue=1, cvalue=0) {
    mean(data[[vname]][data[[tname]]==tvalue], na.rm = T)
 }

test.f(data = df1, vname = "long name 1", tname = "treatment")
#[1] 0.1397585

---

人们有时真的应该开始阅读s。这个问题每天被问一次

test.f(data = df1, vname = "long name 1", tname = "treatment")
Warning message:
  In mean.default(data$vname[data$tname == tvalue], na.rm = T) :
  argument is not numeric or logical: returning NA

test.f <- function(data, vname, tname, tvalue=1, cvalue=0) {
    mean(data[[vname]][data[[tname]]==tvalue], na.rm = T)
 }

test.f(data = df1, vname = "long name 1", tname = "treatment")
#[1] 0.1397585

mean(df1$`long name 1`[df1$treatment==1], na.rm=TRUE)
#[1] 0.1397585