One R Tip A Day uses R basic graphics to visualise migration to the United States during 1820-2006. Again, as usual, let’s reproduce this in ggplot2. First, load ggplot2 and dataset > library(ggplot2) > df <- structure(c(106487, 495681, 1597442, 2452577, 2065141, 2271925, 4735484, 3555352, 8056040, 4321887, 2463194, 347566, 621147, 1325727, 1123492, 800368, 761550, 1359737, 1073726, 36, 53, 141, 4