在ggplot2中更改轴标签名称

Question

我已经阅读了很多关于更改标签命令的知识，但我似乎没有在我的图中正确地获取它们。

我想将y轴标签从“HeartRate”更改为“心率（节拍/分钟）”。

这是我的命令：

df <- data.frame(
    Phase = factor(c(0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9)), 
    HeartRate = c(67, 70, 70, 73, 82, 83, 104, 106, 73, 86, 74, 65, 86, 82, 94, 108, 73, 81, 67, 68), 
    group = factor(c("female", "male", "female", "male", "female", "male", "female", "male", "female", "male", "female", "male", "female", "male", "female", "male", "female", "male", "female", "male")), 
    se = c(4, 7, 4, 9, 5, 9, 8, 14, 6, 15, 3, 6, 6, 9, 4, 14, 3, 8, 4, 5) 
) 


limits <- aes(ymax = HeartRate + se, ymin=HeartRate - se)  
p <- ggplot(df, aes(fill=group, y=HeartRate, x=Phase)) 
p + geom_bar(position="dodge", stat="identity")  
limits <- aes(ymax = HeartRate + se, ymin=HeartRate - se)  
p <- ggplot(df, aes(fill=group, y=HeartRate, x=Phase, title="Gender differences in Heart Rate")) 
p + geom_bar(position="dodge", stat="identity")  
dodge <- position_dodge(width=0.9)  
p + geom_bar(position=dodge) + geom_errorbar(limits, position=dodge, width=0.25) 

我什么都试过，但我只是似乎没有得到它的权利。 :(

Answer 1

添加代码的最后一行：

scale_y_continuous("Heart Rate (beats/min)") 

这将是这样的：

p + geom_bar(position=dodge) + geom_errorbar(limits, position=dodge, width=0.25) + scale_y_continuous("Heart Rate (beats/min)")