scale_hue

Colours that vary continuous in hue

Details

See layer and qplot for more information on creating a complete plot from multiple components.

Examples


> (d <- qplot(carat, price, data=diamonds, colour=clarity))


> 
> # Change scale label
> d + scale_colour_discrete()


> d + scale_colour_discrete("clarity")


> d + scale_colour_discrete(expression(clarity[beta]))


> 
> # Adjust luminosity and chroma
> d + scale_colour_discrete(l=40, c=30)


> d + scale_colour_discrete(l=70, c=30)


> d + scale_colour_discrete(l=70, c=150)


> d + scale_colour_discrete(l=80, c=150)


> 
> # Change range of hues used
> d + scale_colour_discrete(h=c(0, 90))


> d + scale_colour_discrete(h=c(90, 180))


> d + scale_colour_discrete(h=c(180, 270))


> d + scale_colour_discrete(h=c(270, 360))


> 
> # Vary opacity
> # (only works with pdf, quartz and cairo devices)
> d + scale_colour_discrete(alpha = 0.9)


> d + scale_colour_discrete(alpha = 0.5)


> d + scale_colour_discrete(alpha = 0.2)