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library("sf")

## Linking to GEOS 3.6.1, GDAL 2.1.3, proj.4 4.9.3

library("tidyverse")

## ── Attaching packages ───────────────────────────────────────────────────── tidyverse 1.2.1 ──

## ✔ ggplot2 3.0.0     ✔ purrr   0.2.5
## ✔ tibble  1.4.2     ✔ dplyr   0.7.6
## ✔ tidyr   0.8.1     ✔ stringr 1.3.1
## ✔ readr   1.1.1     ✔ forcats 0.3.0

## ── Conflicts ──────────────────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag()    masks stats::lag()

quakes_sf <- quakes %>%
  as_tibble() %>%
  st_as_sf(coords = c("long", "lat"), crs = 4326)

ggplot() +
  geom_sf(data = quakes_sf)

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##      speed           dist       
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##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
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