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0316notes #21

@shiaoyi

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@shiaoyi

0316

R語言

認識c、factor、plot、seq、rep、matrix、array、list、dataframe,看起來很像,但都有其特別定義。也學會怎麼讀取、寫入、存取外部資料,像是csv、Rdata,還有一些內建function像是aggregate、apply、proc.time,想顯示東西的話用show,還有基本的if、for、install.packages,使用外部好用的function

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