It should be very easy I guess but I did not find an answer anywhere.
I have boxplots where I want the categories to consist of two lines (category name and the sample size):
names(cArea) = c("Category 1\n(n=20)","Category 2\n(n=156)","Category 3\n(n=100)")
boxplot(cArea, col="grey", lty=1, lwd=2, main="Test", xlab="Categories", ylab="Value")
box(lwd=2)
How can I make it such that it is displayed correctly (without the text overlaying the x-axis)?
In basic R graphics you can control such placement with the 'par' function. Your issue can be solved with the 'mgp' argument, which controls "The margin line (in mex units) for the axis title, axis labels and axis line. Note that mgp[1] affects title whereas mgp[2:3] affect axis. The default is c(3, 1, 0)." (cite from the help page).
Hey Martin !
The R graph gallery proposes a complete answer to this question, with R code and illustration :
Another way to represent the quantity of data for each box is to make their width proportional to their quantity :
http://www.r-graph-gallery.com/70-boxplot-with-categories-on-multiple-lines/
http://www.r-graph-gallery.com/24-boxplot-with-variable-width/
Yan, the links you have provided are not working.
I think the new website is:
http://rgraphgallery.blogspot.com/
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