CODEWITHSUNDEEP
rgeospatial
confusedpanda
confusedpanda

Reputation: 45

Mapping a csv file in R

I'm trying to map crime incidents in Boston. I converted the lat/long to simple feature points but when I plotted it, I only got two points. Does anyone know how to remedy this?

crimedata = read.csv("2019 Crime Incidents.csv", stringsAsFactors = FALSE)
points = st_as_sf(crimedata, coords = c("Lat", "Long"), crs = 4326)
plot(points$geometry, pch=16, col="navy")

enter image description here

Upvotes: 0

Views: 611

Answers (1)

danlooo
danlooo

Reputation: 10627

You need to plot the points on top of a map:

library(tidyverse)
library(ggmap)

points <- tibble(
  lon = c(-100, -90),
  lat = c(40, 40),
  value = c("A", "B")
)
c(left = -125, bottom = 25.75, right = -67, top = 49) %>%
  get_stamenmap(zoom = 5, maptype = "toner-lite") %>%
  ggmap() +
    geom_point(
      data = points,
      mapping = aes(color = value),
      size = 7
    )

enter image description here

Upvotes: 1

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