Guides for each scale can be set scale-by-scale with the guide argument,
or en masse with gf_guides().
Arguments
- object
a gg object
- ...
arguments passed to
ggplot2::guides().
Examples
dat <-
data.frame(
x = 1:5, y = 1:5,
p = 1:5, q = factor(1:5), r = factor(1:5)
)
p <-
dat |>
gf_point( y ~ x, colour = ~ p, size = ~ q, shape = ~r)
# without guide specification
p
#> Warning: Using size for a discrete variable is not advised.
# Show colorbar guide for colour.
# All these examples below have a same effect.
p |> gf_guides(colour = "colorbar", size = "legend", shape = "legend")
#> Warning: Using size for a discrete variable is not advised.
p |> gf_guides(colour = guide_colorbar(), size = guide_legend(),
shape = guide_legend())
#> Warning: Using size for a discrete variable is not advised.
p +
scale_colour_continuous(guide = "colorbar") +
scale_size_discrete(guide = "legend") +
scale_shape(guide = "legend")
#> Warning: Using size for a discrete variable is not advised.
# Remove some guides
p |> gf_guides(colour = "none")
#> Warning: Using size for a discrete variable is not advised.
p |> gf_guides(colour = "colorbar",size = "none")
#> Warning: Using size for a discrete variable is not advised.
# Guides are integrated where possible
p |>
gf_guides(
colour = guide_legend("title"),
size = guide_legend("title"),
shape = guide_legend("title")
)
#> Warning: Using size for a discrete variable is not advised.
g <- guide_legend("title")
p |> gf_guides(colour = g, size = g, shape = g)
#> Warning: Using size for a discrete variable is not advised.
p |> gf_theme(legend.position = "bottom")
#> Warning: Using size for a discrete variable is not advised.
# position of guides
# Set order for multiple guides
mpg |>
gf_point(cty ~ displ, size = ~hwy, shape = ~ drv) |>
gf_guides(
colour = guide_colourbar(order = 1),
shape = guide_legend(order = 2),
size = guide_legend(order = 3)
)
