📅  最后修改于: 2022-03-11 14:52:00.008000             🧑  作者: Mango
col_order <- c("Species", "Petal.Width", "Sepal.Length",
"Sepal.Width", "Petal.Length")
my_data2 <- my_data[, col_order]
my_data2
# or
my_data2 <- my_data[, c(5, 4, 1, 2, 3)]