Map Covid-19

Provides a choropleth world map of the country-level Covid-19 spread. Uses data from the Johns Hopkins University CSSE team (https://github.com/CSSEGISandData/COVID-19) and the World Bank (https://data.worldbank.org). If called with multiple dates it uses the gganimate package to generate an ainmated display.

map_covid19(
  data = download_merged_data(cached = TRUE, silent = TRUE),
  type = "deaths",
  cumulative = FALSE,
  change_ave = 7,
  per_capita = FALSE,
  dates = max(data$date),
  diverging_color_scale = FALSE,
  region = "World",
  data_date_str = format(lubridate::as_date(data$timestamp[1]), "%B %d, %Y"),
  ...
)

Arguments

data	The data frame to base the plot on. Should be a merged data frame obtained by download_merged_data and defaults to download_merged_data(cached = TRUE, silent = TRUE).
type	The statistic that you want to plot. Needs to be either "confirmed", "deaths", "recovered" or "active", defined as the difference of "confirmed", "deaths" and "recovered".
cumulative	If TRUE, data is being plotted as cumulative (showing the total figures). If FALSE, (the default) (averaged) daily changes are plotted instead. See change_ave to set the averaging window.
change_ave	Number of days to average over when you plot daily changes.
per_capita	If TRUE data is being plotted as per capita measure based on World Bank data. Defaults to FALSE.
dates	The data date to use for the plot. Defaults to the most current date present in the data. If you provide a vector of dates, it will use the gganimate package to animate the colorpleth map.
diverging_color_scale	Should be set to TRUE when a type is chosen that can have meaningful negative values (this is the case for "active" cases). Defaults to FALSE.
region	Do you want to map the world (default) or focus on a certain region? Valid values are either 'World', 'Africa', 'Asia', 'Europe', 'North America', 'Oceania', 'South America' or a named list (x,y) containing longitude and latidtude limits.
data_date_str	A date string to include in the annotation of the plot giving the time when the data was pulled. Defaults to the timestamp of the data. Note that you might run into issues with the default when running this in a non-english locale. Consider setting it by hand then.
...	additional parameters that will passed on to animate if an animation is being prepared.

Value

A ggplot2 or a gganimate object.

Examples

map_covid19()

merged <- download_merged_data(cached = TRUE, silent = TRUE)
map_covid19(merged, per_capita = TRUE, date = "2020-04-23")

if (FALSE) {
# Create animation - takes a while to process

anim <- map_covid19(merged, per_capita = T, dates = unique(merged_df$date))
}