摘要: 创建数据框,然后根据给定ID提取对应行的信息,特别是给定的ID比较多的时候,其实很简单! > patientID <- c("A","B","C","D") > age <- c(25,34,44,52) > DB <- c("T1","T2","T1","T1") > status <- c("P 阅读全文
posted @ 2021-01-26 15:40 月光边境Eric 阅读(1125) 评论(0) 推荐(0) 编辑