我有一個csv文件,正在讀取我的程序。有人可以解釋爲什麼讀取csv文件並更改爲字符的語法
kfreq1=as.character(read.csv("set1.csv",header=FALSE,sep=","))
產生輸出
[1] "c(35, 116, 103, 43, 76, 94, 102, 11, 108, 106, 80, 84, 1, 107, 21, 46, 50, 31, 19, 39, 30, 92, 88, 36, 22, 118, 38, 101, 12, 63, 60, 33, 91, 112, 9, 105, 52, 41, 18, 66, 56, 7, 69, 89, 74, 96, 3, 53, 57, 71, 100, 29, 113, 111, 58, 104, 62, 25, 59, 40, 83, 44, 110, 61, 68, 65, 67, 51, 85, 28, 13, 75, 17, 42, 115, 6, 8, 15, 78, 55, 73, 114, 47, 90, 34, 82, 95, 72, 97, 70, 4, 86, 117, 119, 45, 109, 26, 20, 81, 27, 2, 48, 98, 54, 64, 49, 87, 79, 120, 99, 10, 24, 23, 5, 37, 93, 14, 77, 32, 16)"
[2] "c(7, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1)"
但
kfreq1=as.character(read.csv("set1.csv",header=FALSE,sep=",")$V1)
生產作爲參考文件的格式是這樣輸出
[1] "environmental" "using" "software" "experience" "policy"
[6] "research" "skills" "candidate" "support" "statistical"
...
environmental,7
using,5
software,4
如果您需要將列轉換爲字符類。你可以用'colClasses'指定read.csv,或者在讀取它後指定'df1 < - read.csv(「set1.csv」,header = FALSE,sep =「,」); df1 $ v1 < - as.character(df1 $ v1)' – akrun
什麼是最簡單的方法來讀取文件並大寫第一列中的單詞? – rdevn00b
嘗試'toupper(df1 $ v1)''as.character'在'vectors'上工作 – akrun