Y 轴值无法在 R 中的 gap.boxplot 上正确显示

Question

This is my script and the graph produced. I have made a gap between 7-29.8. But How can I display the y-axis values at 7 and 30? The axis only shows 1-6, instead of 0-7 , 30 as intended.

gap.boxplot(Km, gap=list(top=c(7,30), bottom=c(NA,NA), axis(side=2, at=c(0,29.8), labels= F)), 
            ylim=c(0,30), axis.labels=T, ylab="Km (mM)", plot=T, axe=T,
            col=c("red","blue","black"))

abline(h=seq(6.99,7.157,.001), col="white")
axis.break(2, 7.1,style="slash")   

Answer 1

You can call the axis function again to plot the marks at c(0:7,30)

axis(2,c(0:7,30)

But because you have a gap between 7 and 30 , anything beyond 7 will have to be shifted in the plot. In general, a mark at position y will have to be moved downwards to y-gap.width , or y-(30-7) in your case.

So you can do this to plot your marks:

axis(2, labels=c(0:7,30), at=c(0:7,30-(30-7)))

Answer 2

It's hard to replicate the plot without example data. But I think this worth a try and should work.

axis(2,labels=c(0:7), at=c(0:7)) # build first gap marker '7'

then separately add the second gap marker

axis(2, labels=c(30), at=7*(1+0.01)) # the interval (0.01) could be different, test to find the best one to fit your plot