gt_plt_bar_stack: Add a percent stacked barchart in place of existing data.

In gtExtras: Extending 'gt' for Beautiful HTML Tables

Add a percent stacked barchart in place of existing data.

Description

The gt_plt_bar_stack function takes an existing gt_tbl object and converts the existing values into a percent stacked barchart. The bar chart will represent either 2 or 3 user-specified values per row, and requires a list column ahead of time. The palette and labels need to be equal length. The values must either add up to 100 ie as percentage points if using position = 'fill', or can be raw values with position = 'stack'. Note that the labels can be controlled via the fmt_fn argument and the ⁠scales::label_???()⁠ family of function.

Usage

gt_plt_bar_stack(
  gt_object,
  column = NULL,
  palette = c("#ff4343", "#bfbfbf", "#0a1c2b"),
  labels = c("Group 1", "Group 2", "Group 3"),
  position = "fill",
  width = 70,
  fmt_fn = scales::label_number(scale_cut = cut_short_scale(), trim = TRUE),
  font = "mono"
)

Arguments

gt_object	An existing gt table object of class gt_tbl
column	The column wherein the percent stacked barchart should replace existing data. Note that the data must be represented as a list of numeric values ahead of time.
palette	A color palette of length 2 or 3, represented either by hex colors ("#ff4343") or named colors ("red").
labels	A vector of strings of length 2 or 3, representing the labels for the bar chart, will be colored according to the palette as well.
position	An string indicator passed to ggplot2 indicating if the bar should be a percent of total "fill" or stacked as the raw values "stack".
width	An integer representing the width of the bar chart in pixels.
fmt_fn	A specific function from ⁠scales::label_???⁠ family. Defaults to scales::label_number()
font	A string representing the font family of the numbers of the bar labels. Defaults to mono.

Value

An object of class gt_tbl.

Examples

library(gt)
library(dplyr)

ex_df <- dplyr::tibble(
  x = c("Example 1","Example 1",
        "Example 1","Example 2","Example 2","Example 2",
        "Example 3","Example 3","Example 3","Example 4","Example 4",
        "Example 4"),
  measure = c("Measure 1","Measure 2",
              "Measure 3","Measure 1","Measure 2","Measure 3",
              "Measure 1","Measure 2","Measure 3","Measure 1","Measure 2",
              "Measure 3"),
  data = c(30, 20, 50, 30, 30, 40, 30, 40, 30, 30, 50, 20)
)


tab_df <- ex_df %>%
  group_by(x) %>%
  summarise(list_data = list(data))

tab_df

ex_tab <- tab_df %>%
  gt() %>%
  gt_plt_bar_stack(column = list_data)

See Also

Other Plotting: gt_plt_bar(), gt_plt_bar_pct(), gt_plt_dist(), gt_plt_percentile(), gt_plt_point(), gt_plt_sparkline(), gt_plt_winloss()

gtExtras documentation built on Nov. 5, 2025, 7:25 p.m.