Q:

How to get rid or alter default axis labels and/or titles in density plot? 

I would like to know, how can I alter "default" x label (or subtitle) in density plot in R.
For example, I do not wand this text "N = ..., bandwidth = ..." to be on the plot (I do not know if it is x-label or subtitle, but it usually appears under x-axis).  

A:

You should just use the standard plotting arguments to change the labels:
plot(density(rnorm(10)), 
     xlab="X", #Change the x-axis label
     ylab="Density", #y-axis label
     main="A nice title")#Main title

See the plotting help page: ? plot and the documentation. 

A:

To get rib of them, simply specify them as NA
plot(density(rnorm(10)), 
xlab=NA, #Change the x-axis label
ylab=NA, #y-axis label
main=NA) #Main title

