我有一些数据，我想在上一行的前面的值中填充值。该功能类似于我们在EXCEL中所做的操作，我们拖动值，黑色行将被填充。我有类似的1000个此类带有值的行，并且在该值以下有空白列
我尝试了
rep()
R的功能，但对我不起作用！
输入
>dput(Trail)
structure(list(V1 = c("ABCD", NA, NA, NA, "EFGH", NA, NA, "IJKLS"
), V2 = c(0.5, NA, NA, NA, 1.3, NA, NA, 1.4), V3 = c(0.6, NA,
NA, NA, 0.4, NA, NA, 9.4), V4 = c(10, NA, NA, NA, 11, NA, NA,
10), V5 = c(11, NA, NA, NA, 0.5, NA, NA, 11), V6 = c("A", "B",
"C", "E", "F", "G", "H", "I")), row.names = c(NA, -8L), class = c("tbl_df",
"tbl", "data.frame"))
输出
structure(list(V1 = c("ABCD", "ABCD", "ABCD", "ABCD", "EFGH",
"EFGH", "EFGH", "IJKLS"), V2 = c(0.5, 0.5, 0.5, 0.5, 1.3, 1.3,
1.3, 1.4), V3 = c(0.6, 0.6, 0.6, 0.6, 0.4, 0.4, 0.4, 9.4), V4 = c(10,
10, 10, 10, 11, 11, 11, 10), V5 = c(11, 11, 11, 11, 0.5, 0.5,
0.5, 11), V6 = c("A", "B", "C", "E", "F", "G", "H", "I")), row.names =
c(NA,-8L), class = c("tbl_df", "tbl", "data.frame"))