Graphics Reference
In-Depth Information
Figure 12-6. All the ColorBrewer palettes
The ColorBrewer palettes can be selected by name. For example, this will use the Oranges
palette ( Figure 12-7 ):
p + scale_fill_brewer(palette = "Oranges" )
Figure 12-7. Using a named ColorBrewer palette
You can also use a palette of greys. This is useful for print when the output is in black and white.
The default is to start at 0.2 and end at 0.8, on a scale from 0 (black) to 1 (white), but you can
change the range, as shown in Figure 12-8 .
p + scale_fill_grey()
# Reverse the direction and use a different range of greys
p + scale_fill_grey(start = 0.7 , end = 0 )
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