Question

I want to use barplot() to plot a time series xts object. However, the date format shown up in x axis is in numeric values instead of date format. How can I change the numeric values to date format like “2012-06-12”? Here is an example code:

x<-rnorm(100);
y <- xts(x, Sys.Date()+1:100);
barplot(y);

Answer 1

The generic solution is to use the names.arg argument, but as I said in my comment, I can’t reproduce your problem with the code you provided.

barplot(y, names.arg=format(index(y), "%Y-%m-%d"))