摘要: set.seed(125) myMat <- matrix(rpois(20, 3), nrow = 4) myMat dim(myMat) apply(myMat, 2, max) apply(myMat, 1, min) apply(myMat, 2, range) airquality spl 阅读全文
posted @ 2021-05-17 18:01 sinEagle 阅读(47) 评论(0) 推荐(0) 编辑