ggplot2 is not only the R language’s most popular data visualization package, it is also an ecosystem. Numerous add-on packages give ggplot added power to do everything from more easily changing ...

Basic scatter plot with ggplot2. However, it’s currently impossible to know which points represent what counties. ggplot’s geom_text() function adds labels to all the points: ma_graph + geom ...

A scatterplot from ggplot2 using the qplot() function. The qplot default starts the y axis at a value that makes sense to R. However, you might want your y axis to start at 0 so you can better see ...