R:I'；我试图将rollmean（zoo）应用于列表中几个数据帧中的特定列

重述：

循环？也没有成功

lapply(list_of_df), function(x) rollmean(list_of_df, 2))

---

For（i in list_of_df）{roll_mean 1问题在一点上说它只想在Y上执行rollmean，而在另一点上说这是有效的
roll_mean你是指使用
lappy
？
lappy（list_of_df，function（x）rollmean（x，2））
roll_mean <- rollmean(list_of_df$A, 2)
roll_mean

roll_mean1 <- rollmean(list_of_df, 2)
roll_mean1

Sub1 <- lapply(list_of_df, "[", 2)
roll_mean1 <- rollmean(Sub1, 2)
roll_mean1

lapply(list_of_df), function(x) rollmean(list_of_df, 2))

For (i in list_of_df) {roll_mean1 <- rollmean(Sub1, 2)
    Exp 
}

lapply(list_of_df, rollmean, 2)

for(i in seq_along(list_of_df)) list_of_df[[i]] <- rollmean(list_of_df[[i]], 2)

lapply(list_of_df, transform, Y = rollmean(Y, 2, fill = NA))

for(i in seq_along(list_of_df)) {
  list_of_df[[i]]$Y <- rollmean(list_of_df[[i]]$Y, 2, fill = NA)
}