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stust_rstudio_practice's Introduction

R語言課程的學習筆記

  • 課堂筆記,歡迎下載程式碼查看,詳細內容皆放在註解

2018.03.22課程重點如下

  • 產生DataFrame
  • 解決windows亂碼問題
  • 讀取外部xlsx等檔案
  • 輸出xlsx等檔案
  • 合併xlsx
  • 資料篩選判斷
  • 資料轉換與分類
  • 查看是否有空資料

2018.03.15課程重點如下

  • 產生不重複的向量seq
  • 產生重複的向量req
  • 向量加法,若某一個向量的長度不足,會自動循環補足
  • 相加/乘上去
  • 條件判斷
  • 字串結合
  • 排序方式
  • 查看幾行幾列
  • 列出不重複的因子
  • 創建list

2018.03.08課程重點如下

  • 查看與安裝套件
  • 讀取本地端原本就含有的資料集
  • 查看前幾筆資料head
  • 查看後幾筆資料tail
  • 設定與取得工作目錄
  • 查看目前存在記憶體存在的物件
  • 清除記憶體資料
  • 簡單運算round取小數到第幾位等...

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