Part III: ggplot2 introduction, faceting examples

part3.r

## Title: ggplot2 Introduction: Part 3
## Description: This line by line analysis, provides an introduction to ggplot2. About faceting.
## Created by: Brandon Bertelsen: Research Manager, Credo Consulting Inc.

# Still working with the same dataset, let's revisit some of our earlier plots.
ggplot(d, aes(price)) + geom_histogram()

# Apply a basic facet to view more of your data
ggplot(d, aes(price)) + geom_histogram() + facet_grid(~cut)

# This can be extended further, depending on the number of dimensions you provide to facet
ggplot(d, aes(price)) + geom_histogram() + facet_grid(clarity~cut)

# More complicated graphics are much similar
ggplot(d, aes(carat, price)) + geom_point() + geom_smooth() + facet_grid(~cut)

# Facet grid, doesn't always automatically provide the scale necessary for analysis. 
ggplot(d, aes(carat, price)) + geom_point() + facet_wrap(clarity~cut)

# Consider using color to add extra seperation, it works out better than additional facetting
ggplot(d, aes(price, carat, color=clarity)) + geom_point() + facet_grid(~cut)