ggplot2 many levels in geom_tile, specific order
134732
Order data inside a geom_tile
119977
Using `geom_line()` with X axis being factors
135230
ggplot2: Curly braces on an axis?
61885
Multiple histograms in ggplot2
40751
ggplot 0.9.3 issue with facet_wrap, free scales and coord_flip - 2nd try
144692
set only lower bound of a limit for ggplot
89370
How can a title be placed for a group of pgfplots?
112937
pgfplot: Customize the axis wide scientific notation multiplier
157826
How can I change the title of a ggplot2 legend?
106679
Create line graph with ggplot2, using time periods as x-variable
151881
Cannot make legend for several density plots in ggplot2
148331
Multiple ggplots of different sizes
16381
Include levels of zero count in result of table()
56816
Polygon label repeated for each tile
105650
Changing order of features in shapefile
60181
How to align ggplot title with window rather than plot grid?
35920
Plotting two variables as lines using ggplot2 on the same graph