时遇到命名标题，直方图X和Y轴，收到错误消息

Question

我无法把标签贴在我的数据的这个子集的直方图：

hist(Familiar$letterCount, main = "Letter count of Familiar Words", xlab = "Letter Count", ylab = "Frequency", abline(v = mean(Familiar$letterCount), col = "black")) 

，我得到的错误信息：

invalid breakpoints produced by 'breaks(x)' null r 

我很抱歉，如果这没有正确格式化堆栈溢出，但我在这里犯了什么错误？

Answer 1

你在'hist'函数中包含'abline'函数。请尝试以下操作：

hist(Familiar$letterCount, main = "Letter count of Familiar Words", 
    xlab = "Letter Count", ylab = "Frequency") 

abline(v = mean(Familiar$letterCount), col = "black")