如何製作x-lab標籤斜體而不是y-lab標籤？ （in R）

Question

您如何製作x-lab標籤而不是y-lab標籤？我能找到的唯一的 命令（font.lab = 3）使得x-lab和y-lab標籤都以斜體顯示。我在R中創建了具有x和y軸上特定名稱的barlot。

barplot(y, main="Main Title", 
    names=c("a", "b", "c"), 
    xlab="Text that I would like to be in italics", 
    ylab="Text that I do NOT want to be in italics", 
    font.lab=3) 

Answer 1

barplot(y, main="Main Title", 
    names=c("a", "b", "c"), 
    xlab=expression(italic("Text that I would like to be in italics")), 
    ylab="Text that I do NOT want to be in italics") 

這是一個plotmath電話：

?plotmath