Applied Data Visualization with R and ggplot2

Using or Setting Your Own Theme Globally

In this section, we'll set our own theme for an individual (or global) plot. Let's begin by implementing the following steps:

1. Set up your theme, as follows:
   • Change the legend title and position.
   • Change the axes titles' colors and relative size (1.5). Using  text changes the colors of the axes titles and the legend text, but not the label text.
   • Change the axes labels' text sizes; use axis.text: (Note that if you want to change the x and y axes separately, you should use axis.text.x and axis.text.y.)

mytheme <- theme(text = element_text(color="Blue"), axis.text = element_text(size=12),axis.title = element_text(size = rel(1.5)))

2. Use your theme with an individual plot:

p2 <- p1+mytheme

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