set_style: Set the style of a forest plot

In forestploter: Create a Flexible Forest Plot

Set the style of a forest plot

Description

Change the look of a forest plot. The settings given in ... update the current style of the plot: settings left out keep their current value, a gpar is merged into the current one and NULL goes back to the default. Like set_labs, this builds the plot again, so it must be used before the plot is edited with edit_plot and the other editing functions.

Usage

set_style(plot, style = NULL, ...)

Arguments

plot	A forest plot object, see forest.
style	A style created with forest_style, or a theme created with forest_theme, that replaces the current style of the plot. The settings in ... are applied on top of it. forest_style() gives the default style.
...	Arguments of forest_style to change, for example title = gpar(col = "red"), fit = "width" or core = list(...).

Value

A forest plot object.

See Also

forest_style forest

Examples

library(grid)
# Read provided sample example data
dt <- read.csv(system.file("extdata", "example_data.csv", package = "forestploter"))
dt <- dt[1:6, ]

# Add a blank column for the forest plot to display CI
dt$` ` <- paste(rep(" ", 20), collapse = " ")

p <- forest(dt[, c("Subgroup", " ")],
            est = dt$est,
            lower = dt$low,
            upper = dt$hi,
            ci_column = 2,
            ref_line = 1,
            style = forest_style(base_size = 10, ref_line = gpar(col = "red")))

# Settings left out are kept, so the reference line stays red
p <- set_style(p, ci = gpar(col = "#4575b4"), title_just = "center")
plot(set_labs(p, title = "Subgroup analysis"))

# `NULL` goes back to the default, a style replaces the whole style
plot(set_style(p, ref_line = NULL))
plot(set_style(p, forest_style(base_size = 8)))

# Let the CI column take the width of the page it is drawn on
plot(set_style(p, fit = "width"))

forestploter documentation built on Oct. 1, 2026, 1:08 a.m.