[英]Passing a string as function argument
我想使用字符串作為函數的參數,以便將該字符串用於結果的繪制,但是R繪制參數變量名而不是其字符串值。 我嘗試了其他解決方案(稀疏,as.character ...),但仍然沒有解決方案。 你有什么主意嗎?
mcnemar_test <- function (c1,c2,class1, class2)
{
name1=label(class1)
name2=deparse(substitute(class2))
v1 = c1$encerts
v2 = c2$encerts
e00 = sum(ifelse(v1+v2==0,1,0)) #bad classification for both
e01 = sum(ifelse(v1<v2,1,0)) #bad classification for 1
e10 = sum(ifelse(v1>v2,1,0)) #bad classification for 2
e11 = sum(ifelse(v1+v2==2,1,0)) #good classification for both
matriu <- matrix(c(e00,e01,e10,e11),nrow = 2,
dimnames = list(name1 = c("Disapprove", "Approve"),
name2 = c("Disapprove", "Approve")))
print (matriu)
t <- mcnemar.test(matriu)
return (t)
}
mcnemar_test(classifiers.NaiveBayes,classifiers.CART,"aa","bb")
我想看到“ aa”和“ bb”,但看到“ name1和name2”
R認為您希望名稱為“ name1”和“ name2”,就像我要創建名稱為“ a”和“ b”的列表一樣:
my.list <- list(a=1, b=2)
嘗試使用structure
並將名稱作為字符向量傳遞:
matriu <- matrix(c(e00,e01,e10,e11),nrow = 2,
dimnames = structure(list(c("Disapprove", "Approve"),
c("Disapprove", "Approve")),
names=c(class1, class2)))
或在創建列表后設置元素的名稱:
matriu <- matrix(c(e00,e01,e10,e11),nrow = 2,
dimnames = list(c("Disapprove", "Approve"),
c("Disapprove", "Approve")))
names(dimnames(matriu)) <- c(class1, class2)
編輯:在您的功能代碼內刪除label(。)和deparse(substitute(。))嘗試,並使用以下方法:
dimnames = setNames( list( c("Disapprove", "Approve"),
c("Disapprove", "Approve")),
c(class1, class2) )
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