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作者 bxxl 在 PTT [ R_Language ] 看板的留言(推文), 共31則

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[問題] 重新編碼的問題

[ R_Language ]3 留言, 推噓總分: +2

作者: zephyr1983 - 發表於 2014/10/15 18:49(10年前)

2^F推bxxl: 舉些例子,輸入是什麼,輸出希望是什麼10/15 21:57

[問題] 讀取資料read.table

[ R_Language ]4 留言, 推噓總分: +2

作者: warex14 - 發表於 2014/10/12 14:21(10年前)

2^F推bxxl: setwd() 設定工作目錄10/12 15:09

3^F→bxxl: R的路徑是看工作目錄不是看source file10/12 15:10

4^F推bxxl: 你的作業，就在裡面加幾行註解,說要先setwd到檔案所在目錄10/12 15:25

[問題] 輸入錯誤格式

[ R_Language ]8 留言, 推噓總分: +1

作者: suiming - 發表於 2014/10/11 17:49(10年前)

4^F推bxxl: 我覺得不可能,因為 1 1 or 1_1 不是合法的常數值, 一開始就10/12 13:16

5^F→bxxl: 會被擋掉. 不會跑進tryCatch內部10/12 13:17

7^F→bxxl: 可以用字串傳進去,裡面再eval(parse(text=n)))把字串轉回值10/12 15:14

8^F→bxxl: 也就是在外面寫 "1 1" 這樣, 就不會被擋掉10/12 15:14

Re: [問題] 快速產生column, 和前幾個row相依

[ R_Language ]7 留言, 推噓總分: +4

作者: celestialgod - 發表於 2014/08/30 07:20(10年前)

6^F推bxxl: 你時間轉成POSIXct,不要用POSIXlt, 大概還可以降一半08/30 23:18

7^F推bxxl: 再把時間差改成difftime(v, v[i], unit='hours') < 108/30 23:37

[問題] 資料整理

[ R_Language ]5 留言, 推噓總分: +2

作者: ddtddt - 發表於 2014/07/28 11:05(10年前)

1^F推bxxl:merge07/28 11:24

2^F推bxxl:把兩個檔案讀成兩個data frame, 用merge()07/28 11:32

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