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Mapping with R

Turning Data Frames Into sf Objects

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View code shown in video 
library(tidyverse)
library(sf)

portland_corners_csv <-
  read_csv("https://raw.githubusercontent.com/rfortherestofus/mapping-with-r-v2/refs/heads/main/data/portland_corners.csv")

portland_corners_csv

portland_corners_sf <-
  portland_corners_csv |>
  st_as_sf(
    coords = c("longitude", "latitude"),
    crs = 4326
  )


portland_corners_sf |>
  mapview::mapview()

Your Turn

  1. Download this CSV of traffic signal data for the city of Portland

  2. Import the CSV and turn it into an sf object using st_as_sf()

  3. Run mapview::mapview() to ensure you imported it correctly

Learn More

Chapter 3 of the book Spatial Statistics for Data Science: Theory and Practice with R covers turning data frames into sf objects.

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

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Course Content

23 Lessons