直方图中的断点使用ggplot

Question

ggplot(df1, aes(x= seg.mean)) +
    geom_histogram(binwidth=.6, colour="black", fill="white") 
    geom_vline(aes(xintercept=mean(seg.mean, na.rm=T)),  
    color="red", linetype="dashed", size=0.5)   

如何增加x轴的断点，例如x轴的范围从-5到5，间隔为0.5

Answer 1

使用scale_x_continuous：+scale_x_continuous(breaks=seq(-5,5,by=0.5))