Univariate Graphs

ggplot(data, mapping) +
  geom_bar()

common options

• color
• fill
• stat

Currently unpopular compared to bar charts

Can be useful for displaying part/whole relationships

see the ggpie package

http://rkabacoff.github.io/ggpie

Can display large number of categories

ggplot(plotdata,  mapping) +
  geom_treemap() + 
  geom_treemap_text()

mapping    aes(x = , area =)

ggplot(data, mapping) +
  geom_histogram()

common options

• color
• fill
• bins

ggplot(data, mapping) +
  geom_density()

common options

• color
• fill
• bw