is.na(.)), all_vars(. > 3))
df %>% filter_all(all_vars(is.na(.) | . > 3))
## 排序函数arrange
iris_df...-----------------------------------
df <- tibble(x = rnorm(100))
df %>%
mutate(
x_category = case_when...-----------------------------------------------------------------------
classify <- function(x) {
case_when..., 324156,
"Westeros", 314256, NA, NA, 465321,
"Narnia", 432156, NA, NA,...mean_income
)
) %>% spread(key = "year", value = "mean_income")
温馨提示:
第一步:运行一边代码,掌握相应的包和函数使用