我有一個.txt數據集，其中所述第一12行文本接着用2個空行，然後將數據fread爲什麼不接受skip命令？

DATE   HEIGHT INPUT  OUTPUT TESTMEASURE 
01/01/1933 NO RECORD NO RECORD MISSING  MISSING 
01/02/1933 NO RECORD NO RECORD MISSING  MISSING

但是，當我做

dat <- fread('data.txt'),

它將跳過15行，和用途第一條數據行作爲導入數據集的列名稱。它忽略標題行。

01/01/1933 NO RECORD NO RECORD MISSING  MISSING

跳躍參數沒有影響我在導入所有。我如何提到需要用作列名的行號？或者我可以重命名列名，但不應該忽略第一行數據。

診斷

Input contains no \n. Taking this to be a filename to open 
File opened, filesize is 0.001319 GB. 
Memory mapping ... ok 
Detected eol as \r\n (CRLF) in that order, the Windows standard. 
Positioned on line 1 after skip or autostart 
This line is the autostart and not blank so searching up for the last non-blank ... line 1 
Detecting sep ... '\t' 
Detected 5 columns. Longest stretch was from line 15 to line 30 
Starting data input on line 15 (either column names or first row of data). First 10 characters: 01/01/1933 
The line before starting line 15 is non-empty and will be ignored (it has too few or too many items to be column names or data): DATE   HEIGHT INPUT OUTPUT TESTMEASURE the fields on line 15 are character fields. Treating as the column names.

來源

2017-06-16 maximusdooku

它應該是'dat < - fread（'data.txt'，skip = 15）'？ – CPak

@ChiPak我需要跳過12 + 2 = 14行。但是，下面的任何內容，15，和數據集不受影響。 – maximusdooku

無論我跳過什麼，導入的第一行都是01/02/1933。 – maximusdooku

你有12行文字，2號線的空間，然後你的數據。但是我注意到DATE和HEIGHT之間有額外的空白。所以作出這樣，你的數據是製表符分隔的文本文件，並添加2標籤DATE和HEIGHT代替fread(data)之間1片

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DATE  HEIGHT INPUT OUTPUT TESTMEASURE 
01/01/1933 NO RECORD NO RECORD MISSING MISSING 
01/02/1933 NO RECORD NO RECORD MISSING MISSING

做給我：

fread(data) 
    01/01/1933 NO RECORD NO RECORD MISSING MISSING 
1: 01/02/1933 NO RECORD NO RECORD MISSING MISSING

刪除DATE和HEIGHT之間的額外選項卡給我：

  DATE HEIGHT  INPUT OUTPUT TESTMEASURE 
1: 01/01/1933 NO RECORD NO RECORD MISSING  MISSING 
2: 01/02/1933 NO RECORD NO RECORD MISSING  MISSING

來源

2017-06-16 19:52:58 CPak

fread爲什麼不接受skip命令？

診斷

回答

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