One of the best all-around plotting packages for R (in my opinion) is Hadley Wickham's ggplot2 . Take a look at the following pages: http://had.co.nz/ggplot2/s

One of the best all-around plotting packages for R (in my opinion) is Hadley Wickham's ggplot2 . Take a look at the following pages: http://had.co.nz/ggplot2/scale_datetime.html http://had.co.nz/ggplot2/scale_datetime.html http://had.co.nz/ggplot2/geom_line.html http://had.co.nz/ggplot2/geom_line.html While not specifically inentended as a 'time-series' package, ggplot2's facilities handle time-series data well. Ggplot2 is available on CRAN (i.e. install.packages('ggplot2'); ). In truth, you don't even have to use a special package if the 'prettiness isn't important.' df <- data.frame( day7 = start + round(runif(100, max = 7 * 86400)), hour10 = start + round(runif(100, max = 10 * 3600)), y = runif(100) ); plot(df$day7, df$y); plot(df$hour10, df$y);