options("repos" = c(CRAN="https://mirrors.tuna.tsinghua.edu.cn/CRAN/"))
options(BioC_mirror="https://mirrors.ustc.edu.cn/bioc/")
install.packages("dplyr")
library(dplyr)
mutate(test, new = Sepal.Length * Sepal.Width)
select(test,1)
select(X1,X2,X3,X4)
filter(test,Species =='setosa')
arrange(test, Seapal.length)
summarise(test, mean(Sepal.Length), sd(Sepal.Length))# 计算Sepal.Length的平均值和标准差
test %>%
count(test,X1)
inner_join(test1, test2, by = "x")
##2. 左连left_join
left_join(test1, test2, by = 'x')
full_join( test1, test2, by = 'x')
semi_join(x = test1, y = test2, by = 'x')
anti_join(x = test2, y = test1, by = 'x')
bind_rows(test1, test2)
bind_cols(test1, test3)
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原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。