X axis in Barplot in R

Question

I want to ask a question about barplot\'s axes:

first please see my data.

SerNo   DOY Rain
1   350 0
2   351 0
3   352 0
4   353 0
5   354 0
6   355 0
7         


        

Answer 1

Try this instead:

mp <- barplot(rainbar$Rain,axes=F,ylim=c(0,15))
axis(1,at=mp,labels=rainbar$DOY)
axis(2,seq(0,15,3),c(0,3,6,9,12,15))

Read ?barplot to see that the value returned from the function call is a vector of midpoints in the plot coordinate system.