Set a continuous scale more suited to bar charts

This is a light wrapper around ggplot2::scale_x_continuous / ggplot2::scale_y_continuous that sets an expand argument of mult = c(0, 0.05). The purpose of this is just to align the bases of bars with the x-axis (for scale_y_continuous) or y-axis (for scale_x_continuous), rather than the default that leaves a gap between bars and the x- or y-axis.

Usage

scale_y_barcontinuous(top = 0.05, ...)

scale_x_barcontinuous(top = 0.05, ...)

Arguments

top

Numeric, giving the ratio by which to set the upper padding. Defaults 0.05, as is the case for the underlying ggplot2::scale_x/y_continuous.

...

Additional arguments passed on to ggplot2::scale_x/y_continuous.

Examples

library(ggplot2)

local_govt <- cws_trend |> 
  dplyr::filter(year == 2024, question == "local_govt_responsive")

# default expansion leaves an awkward gap below 0-aligned bars
p <- ggplot(local_govt, aes(x = group, y = value)) +
  geom_col() +
  scale_x_discrete(labels = scales::label_wrap(10))

p


# scale_y_barcontinuous changes expansion to remove it
p +
  scale_y_barcontinuous()