排除R調用列名中的列

假設我有一個名爲mymat的矩陣。我需要排除key和AMLM12014N-R列，並製作另一個名爲newmat的矩陣。我可以簡單地這樣做：newmat <- mymat[,-c(1,4)]，但有沒有辦法通過調用列名本身？像這樣：newmat <- mymat[,-c("key","AMLM12014N-R")]？排除R調用列名中的列

mymat <- structure(c("chr5:12111", "chr5:12111", "chr5:12113", "chr5:12114", 
"chr5:12118", "0N", "0N", "1N", "0N", "0N", "00", "00", "00", 
"11", "10", "00", "00", "1N", "0N", "00"), .Dim = c(5L, 4L), .Dimnames = list(
    c("34", "35", "36", "37", "38"), c("key", "AMLM12001KP", 
    "AMAS-11.3-Diagnostic", "AMLM12014N-R")))

來源

2015-12-23 MAPK

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我們可以使用setdiff

mymat[,setdiff(colnames(mymat), c("key","AMLM12014N-R"))]

或者%in%

mymat[,!colnames(mymat) %in% c("key","AMLM12014N-R")]

來源

2015-12-23 02:44:55 akrun

排除R調用列名中的列

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