Map flows of people between locations

The function map_epiflows uses leaflet to generate an interactive map displaying flows of people travelling between locations stored in a epiflows object. Note that the object needs to possess geographic coordinates.

map_epiflows(x, title = "", center = NULL, sort = TRUE,
  pal = "YlOrBr", adjust_width = TRUE, ...)

Arguments

x	An epiflows object.
title	Plot title.
center	An optional set of coordinates or character string specifying ID to use as the center of the map
sort	a logical. When TRUE (default), the flows will be sorted in order of number of cases on the map so that the largest flows appear on top.
pal	a color palette to pass on to leaflet::colorQuantile(). This can be the name of a viridis or RColorBrewer palette, a vector of hex colors, or a color-generating functon.
adjust_width	a logical specifying if the width of the flows should be adjusted to reflect the number of flows between locations. Defaults to TRUE.
...	Additional parameters (not used).

Value

A leaflet object

Examples

data("Brazil_epiflows")
data("YF_coordinates")
ef <- add_coordinates(Brazil_epiflows, YF_coordinates[-1])
plot(ef)
map_epiflows(ef, center = "Espirito Santo", title = "Flows to and from Brazil")