Stacked area chart with R
As a variation of a simple area chart, a stacked area chart displays the changes of value of multiple data series over a period of time.
More about: Stacked area chart
Stacked area chart
# Loading required packages
library(unhcrthemes)
library(tidyverse)
library(scales)
library(lubridate)
# Loading data
df <- read_csv("https://raw.githubusercontent.com/GDS-ODSSS/unhcr-dataviz-platform/master/data/change_over_time/area_stacked.csv") |>
mutate(months = lubridate::my(paste(months, "2022")))
# Plot
ggplot(df) +
geom_area(aes(
x = months,
y = funding_million,
fill = funding_type
)) +
scale_fill_unhcr_d(palette = "pal_unhcr") +
labs(
title = "Evolution of funding in West Africa region | 2020",
y = "USD millions",
caption = "Source: UNHCR Refugee Data Finder\n© UNHCR, The UN Refugee Agency"
) +
scale_x_date(
date_labels = "%b",
breaks = pretty_breaks(n = 12)
) +
scale_y_continuous(expand = expansion(c(0, 0.1))) +
theme_unhcr(
grid = "Y",
axis = "x",
axis_title = "y"
)
