Applied Data Visualization with R and ggplot2

Using Scales to Analyze a Dataset

In this section, we'll explore some of the options available in scale_x_continuous and scale_x_discrete.

Let's begin by implementing the following steps:

1. Use the same dataset from the previous exercise, and plot the gdp_per_capita as a histogram.

2. Plot p1, as follows:

3. Can you tell where the maximum occurs? No; it's too approximate. We need a finer method of labeling.
4. Study and view the options in scale_x_continuous. (Use the ?scale_x_continuous command on the command line in order to see the options.)
5. Add the scale_x_continuous layer:

breaks=seq (0,40000,4000)) 

This command defines a range from 0-40,000, ...