title: Making a state map highlighting a specific county and point in R (ggmaps, maps, ggplot2)
body: <p>I am trying to build a map of state, that has its counties outlined, and one county colored in blue with a point for a specific resort. Alas, I am having trouble getting a county colored or adding a specific point. My code builds off of <a href="http://eriqande.github.io/rep-res-web/lectures/making-maps-with-R.html" rel="nofollow noreferrer">http://eriqande.github.io/rep-res-web/lectures/making-maps-with-R.html</a>
  Thank you for any insights!</p>
  
  <pre><code>library(ggplot2)
  library(ggmap)
  library(maps)
  library(mapdata)    
  
  states &lt;- map_data("state")
  dim(states)
  ut_df &lt;- subset(states, region == "utah")
  head(ut_df)
  
  counties &lt;- map_data("county")
  ut_county &lt;- subset(counties, region == "utah")
  head(ut_county)
  
  ut_base &lt;- ggplot(data = ut_df, mapping = aes(x = long, y = lat, group = 
  group)) +
  coord_fixed(1.3) +
  geom_polygon(color = "black", fill = "gray")
  
  ut_base + theme_nothing() +
  geom_polygon(data = ut_county, fill = NA, color = "white") +
  geom_polygon(color = "black", fill = NA)  # get the state border back on top
  </code></pre>