How can I use faceting in ggplot2?

How can I use faceting in ggplot2?

Faceting in ggplot2 allows you to create multiple plots based on a factor variable. You can use the facet_wrap() or facet_grid() functions.

Can you show me an example of using facet_wrap?

Sure! Here's a simple example:

library(ggplot2)

# Sample data
mpg <- ggplot2::mpg

# Create a faceted plot
ggplot(mpg, aes(x=displ, y=hwy)) + 
  geom_point() + 
  facet_wrap(~ class)

What does facet_grid do differently?

facet_grid() allows you to create a grid of plots based on two factor variables, one for rows and one for columns. It provides a more structured layout.

Can I customize the appearance of the facets?

Yes, you can customize facets using themes, labels, and scales. For example, you can change the strip text with strip.text in theme().