guides {ggplot2} | R Documentation |
Guides for each scale can be set in call of
scale_*
with argument guide
, or in
guides
.
guides(...)
... |
List of scale guide pairs |
A list containing the mapping between scale and guide.
Other guides: guide_colorbar
,
guide_colourbar
, guide_legend
# ggplot object dat <- data.frame(x = 1:5, y = 1:5, p = 1:5, q = factor(1:5), r = factor(1:5)) p <- ggplot(dat, aes(x, y, colour = p, size = q, shape = r)) + geom_point() # without guide specification p # Show colorbar guide for colour. # All these examples below have a same effect. p + guides(colour = "colorbar", size = "legend", shape = "legend") p + guides(colour = guide_colorbar(), size = guide_legend(), shape = guide_legend()) p + scale_colour_continuous(guide = "colorbar") + scale_size_discrete(guide = "legend") + scale_shape(guide = "legend") # Guides are integrated where possible p + guides(colour = guide_legend("title"), size = guide_legend("title"), shape = guide_legend("title")) # same as g <- guide_legend("title") p + guides(colour = g, size = g, shape = g) p + theme(legend.position = "bottom") # position of guides p + theme(legend.position = "bottom", legend.box = "horizontal") # Set order for multiple guides qplot(data = mpg, x = displ, y = cty, size = hwy, colour = cyl, shape = drv) + guides(colour = guide_colourbar(order = 1), alpha = guide_legend(order = 2), size = guide_legend(order = 3))