11.18 Bar Chart Stacked
%>% ds ggplot(aes(x=wind_dir_3pm, fill=rain_tomorrow)) + geom_bar() + scale_y_continuous(labels=comma) + labs(x=vnames["wind_dir_3pm"], y="Count") + scale_fill_brewer(palette="Set2")
A stacked bar chart shows a breakdown of the values in the bars based
on another variable. It is achieved by adding
the basic bar chart of Section 11.5.
An issue with stacked bar charts is that whilst the bottom bars are easy to compare bar by bar, the tops are difficult to compare since they all start from a different baseline. A good alternative is to have both bars in a column but side-by-side, as in Section 11.7.
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