| scale_colour_hue {ggplot2} | R Documentation |
Qualitative colour scale with evenly spaced hues.
scale_colour_hue(..., h = c(0, 360) + 15, c = 100, l = 65, h.start = 0, direction = 1, na.value = "grey50") scale_fill_hue(..., h = c(0, 360) + 15, c = 100, l = 65, h.start = 0, direction = 1, na.value = "grey50") scale_colour_discrete(..., h = c(0, 360) + 15, c = 100, l = 65, h.start = 0, direction = 1, na.value = "grey50") scale_fill_discrete(..., h = c(0, 360) + 15, c = 100, l = 65, h.start = 0, direction = 1, na.value = "grey50") scale_color_discrete(..., h = c(0, 360) + 15, c = 100, l = 65, h.start = 0, direction = 1, na.value = "grey50") scale_color_hue(..., h = c(0, 360) + 15, c = 100, l = 65, h.start = 0, direction = 1, na.value = "grey50")
... |
Other arguments passed on to |
h |
range of hues to use, in [0, 360] |
c |
chroma (intensity of colour), maximum value varies depending on |
l |
luminance (lightness), in [0, 100] |
h.start |
hue to start at |
direction |
direction to travel around the colour wheel, 1 = clockwise, -1 = counter-clockwise |
na.value |
Colour to use for missing values |
Other colour scales: scale_color_brewer,
scale_color_distiller,
scale_colour_brewer,
scale_colour_distiller,
scale_fill_brewer,
scale_fill_distiller;
scale_color_continuous,
scale_color_gradient,
scale_colour_continuous,
scale_colour_gradient,
scale_fill_continuous,
scale_fill_gradient;
scale_color_gradient2,
scale_colour_gradient2,
scale_fill_gradient2;
scale_color_gradientn,
scale_colour_gradientn,
scale_fill_gradientn;
scale_color_grey,
scale_colour_grey,
scale_fill_grey
dsamp <- diamonds[sample(nrow(diamonds), 1000), ]
(d <- qplot(carat, price, data=dsamp, colour=clarity))
# Change scale label
d + scale_colour_hue()
d + scale_colour_hue("clarity")
d + scale_colour_hue(expression(clarity[beta]))
# Adjust luminosity and chroma
d + scale_colour_hue(l=40, c=30)
d + scale_colour_hue(l=70, c=30)
d + scale_colour_hue(l=70, c=150)
d + scale_colour_hue(l=80, c=150)
# Change range of hues used
d + scale_colour_hue(h=c(0, 90))
d + scale_colour_hue(h=c(90, 180))
d + scale_colour_hue(h=c(180, 270))
d + scale_colour_hue(h=c(270, 360))
# Vary opacity
# (only works with pdf, quartz and cairo devices)
d <- ggplot(dsamp, aes(carat, price, colour = clarity))
d + geom_point(alpha = 0.9)
d + geom_point(alpha = 0.5)
d + geom_point(alpha = 0.2)
# Colour of missing values is controlled with na.value:
miss <- factor(sample(c(NA, 1:5), nrow(mtcars), rep = TRUE))
qplot(mpg, wt, data = mtcars, colour = miss)
qplot(mpg, wt, data = mtcars, colour = miss) +
scale_colour_hue(na.value = "black")