摘要: rm(x) > mean(x=1:10) #[1] 5.5 > x #Error: object 'x' not found Here x is declared within the function’s scope of the function, so it doesn’t exist in the user workspace. Now, let... 阅读全文
posted @ 2016-05-14 20:06 旅鼠 阅读(4929) 评论(0) 推荐(0) 编辑