The colorbar guide (guide_colourbar) converts units into cm and then uses them as mm

[clauswilke]

The colorbar guide (guide_colourbar) converts units into cm and then uses them as mm. Reproducible example:

library(ggplot2)
p1 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, color = Petal.Width)) + geom_point() +
  scale_color_distiller(name = "gap width = 1cm") +
  theme(legend.spacing.x = grid::unit(1, "cm"),
        legend.position = "top")
p2 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, color = Petal.Width)) + geom_point() +
  scale_color_distiller(name = "gap width = 10cm") +
  theme(legend.spacing.x = grid::unit(10, "cm"),
        legend.position = "top")
p3 <- ggplot(iris, aes(Sepal.Width, Sepal.Length, color = Petal.Width)) + geom_point() +
  scale_color_distiller(name = "gap width = 50cm") +
  theme(legend.spacing.x = grid::unit(50, "cm"),
        legend.position = "top")

cowplot::plot_grid(p1, p2, p3, nrow = 1)

The problem exists for both legend.spacing.x and legend.spacing.y but cannot be shown for legend.spacing.y because of issue #2260, which has not yet been fixed for guide_colourbar.

The relevant lines in the code are here (convert legend.spacing.x and legend.spacing.y into cm) and here (use all widths and heights as mm values.)

[batpigandme]

If ./tests/figs/deps.txt can be trusted, it looks like Freetype 2.7.0 (obviously worth waiting for hadley to confirm/deny)

ggplot2/tests/figs/deps.txt

Line 2 in bf9255e

FreeType: 2.7.0

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