Hi Folks!

I have a question regarding an issue on which I´ve read a few threads but
can´t resolve --> Labelling every other tick mark on the x-axis using
factors. Here´s an example:

db<-data.frame(date=as.factor(c(1:50)),var=rnorm(50))
barplot(db$var,names.arg=levels(db$date),las=2,cex.axis=0.8,cex=0.8)

This labels all the tickmarks in my barplot, which is the default behavior.
I would like to label every other tick mark in the barplot -->
1,3,5,7 and so on.

Thank you very much for your help!


All the best,

A

-- 
Alfredo Tello (http://alfredotello.com)
Sustainable Aquaculture Group
Institute of Aquaculture
University of Stirling
Scotland, UK.

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