Legends - R Graphics - page 296

Figure 10-6. Left: modified order with a grey palette; right: with a palette from RColorBrewer
All the previous examples were for fill . If you use scales for other aesthetics, such as colour
(for lines and points) or shape (for points), you must use the appropriate scale. Commonly used
scales include:
▪ scale_fill_discrete()
▪ scale_fill_hue()
▪ scale_fill_manual()
▪ scale_fill_grey()
▪ scale_fill_brewer()
▪ scale_colour_discrete()
▪ scale_colour_hue()
▪ scale_colour_manual()
▪ scale_colour_grey()
▪ scale_colour_brewer()
▪ scale_shape_manual()
▪ scale_linetype()
By default, using scale_fill_discrete() is equivalent to using scale_fill_hue() ; the
same is true for color scales.