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Interactive maps

Richard Aubrey White, Chi Zhang

2021-01-15

Source: vignettes/sf_interactive.Rmd
sf_interactive.Rmd
library(ggplot2)
library(data.table)
#> 
#> Attaching package: 'data.table'
#> The following object is masked from 'package:base':
#> 
#>     %notin%
library(magrittr)

sf for interactive maps

Every map also ships as an sf object, which pairs with the leaflet package to make interactive, zoomable maps. The example below draws the counties over a light background tile.

pd_county <- csmaps::nor_county_map_b2024_default_sf
leaflet::leaflet(
  pd_county,
  options = leaflet::leafletOptions(preferCanvas = F)
) %>%
  leaflet::addProviderTiles(leaflet::providers$Esri.WorldGrayCanvas) %>%
  leaflet::addPolygons(
    weight = 0.3,
    opacity = 1,
    color = "black", 
    fillColor = "white",
    fillOpacity = 0.9
  )