Data visualization

This repo contains materials for the 'Data Visualization - Introduction to ggplot2' Eco-Data-Science workshop on January 17, 2018 at UCSB. The objective is to introduce basics of creating and customizing graph using ggplot, including:

• The grammar of graphics
• General structure of ggplot() code
• Customizing axes labels and titles
• Customizing graph aesthetics (by variable)
• Faceting (facet_wrap)
• Types of graphs (geoms)
• Bar graphs (stacked counts, proportions, and clustered)
• Exporting graphs (ggsave)

Before the workshop, you should:

• Install the tidyverse package if you don't have it already (ggplot2 package is part of the tidyverse)
• Load the dataset np_visit.csv (a file containing visitor counts at National Parks in the United States)