2023年9月8日
Three ways to conditionally remove variables in a dataset
摘要： # Method 1: ``` proc contents data=cars short out=outds00; run; data outds(keep=name); set outds00; vnam=substr(name, 1, 1); if vnam ne "M" then outpu 阅读全文
posted @ 2023-09-08 13:24 helloyuen 阅读(2) 评论(0) 推荐(0) 编辑