Add background for creating plot with customized color

Creates colored background for panels of rainfall or forest plot.

Usage

background_panel(
  g,
  background_color = c("#69B8F7", "#FFFFFF"),
  background_alpha = 0.3
)

Arguments

g

A ggplot object for adding colored background.

background_color

A vector of colors that defines the color for the plot background. Default is c("#69B8F7", "#FFFFFF"), which are pastel blue and white. The colors will be recycled.

background_alpha

Opacity of a geom. Default is 0.3.

Value

Plot as a colored background to add panels for rainfall or forest plot.

Examples

library(ggplot2)

df <- data.frame(
  study = c("S1", "S2", "S3", "S4", "S5", "S6", "S7"),
  item = as.factor(1:7),
  effect = c(-.4, -.25, -.1, .1, .15, .2, .3),
  lower = c(-.43, -.29, -.17, -.02, .04, .17, .27),
  upper = c(-.37, -.21, -.03, .22, .24, .23, .33)
)

ggplot(data = df) |>
  background_panel(background_color = c("grey", "white"), background_alpha = 0.4) +
  geom_point(aes(y = item, x = effect)) +
  geom_errorbar(aes(y = item, x = effect, xmin = lower, xmax = upper), width = 0.4) +
  scale_y_discrete(name = "", breaks = 1:nrow(df), labels = df$study)