计数函数n() count()
摘要：
n()外的计数函数还包括 n_distinct(x)取x向量中unique值的个数,等同 length(unique(x))。如： tally(x, wt = NULL, sort = FALSE, name = "n") count(x, ..., wt = NULL, sort = FALSE, 阅读全文
posted @ 2021-12-20 17:06 BioinformaticsMaster 阅读(338) 评论(0) 推荐(0) 编辑
