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Mapping with R

Geocoding

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View code shown in video 
library(sf)

library(tidyverse)

famous_places <-
  tribble(
    ~building,
    ~address,
    "White House",
    "1600 Pennsylvania Ave NW, Washington, DC 20500 United States",
    "Empire State Building",
    "350 5th Ave, New York, NY 10118, USA"
  )

library(tidygeocoder)

famous_places |>
  geocode(address)

famous_places_sf <-
  famous_places |>
  geocode(address) |>
  st_as_sf(
    coords = c("long", "lat"),
    crs = 4326
  )

famous_places_sf

famous_places_sf |>
  mapview::mapview()

us_and_uk_head_residences <-
  tribble(
    ~building,
    ~address,
    "White House",
    "1600 Pennsylvania Ave NW, Washington, DC 20500 United States",
    "Number 10",
    "10 Downing St, London SW1A 2AA, United Kingdom"
  )

us_and_uk_head_residences

us_and_uk_head_residences |>
  geocode(address)

us_and_uk_head_residences |>
  geocode(
    address,
    method = "iq"
  )

us_and_uk_head_residences_v2 <-
  tribble(
    ~building,
    ~address,
    ~city,
    ~state,
    ~postal_code,
    ~country,
    "White House",
    "1600 Pennsylvania Ave NW",
    "Washington",
    "DC",
    "20500",
    "United States",
    "Number 10",
    "10 Downing St",
    "London",
    NA,
    "SW1A 2AA",
    "United Kingdom"
  )

us_and_uk_head_residences_v2 |>
  geocode(
    street = address,
    city = city,
    state = state,
    postalcode = postal_code,
    country = country
  )

us_and_uk_head_residences_v2 |>
  geocode(
    street = address,
    city = city,
    state = state,
    postalcode = postal_code,
    country = country,
    method = "iq"
  )

Your Turn

Create a tibble with the following starter code for your home address:

library(tidyverse)

my_address <-
  tribble(
    ~address,
    "Your address goes here"
  )

Use the {tidygeocoder} package to geocode your address

Turn the result into an sf object with st_as_sf() and plot it on a map with mapview::mapview() to make sure it worked

Remember that if you want to use method = "iq" you’ll need to sign up for a free LocationIQ account and create an API key

Learn More

To learn more about {tidygeocoder}, check out its documentation website.

Have any questions? Put them below and we will help you out!

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Course Content

23 Lessons