What is the global color map in R language data map?

R language data map in the global color map is like, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can get something.

Today's introduction is the map of the United States, the same methods and techniques, different objects.

The whole process and the code are not very different, as long as you get the world map material and modify the parameters and indicator names and reference paths according to the previous code, you can do it (although you may not necessarily understand the meaning of each code).

R language environment:

R x64 3.31/Rstudio 0.99.903/ggplot2 2.1.0

Code process:

Toolkits required to load features:

Library (ggplot2)

Library (plyr)

Library ("maptools")

Import and organize world map geographic information data:

World_map