ปรับแต่งผลลัพธ์ของแผนที่

# Set the color guide to FALSE and add a subtitle and caption to your map
___(marin_value, ___(fill = estimate, color = ___)) + 
  ___() + 
  scale_fill_viridis_c(labels = scales::dollar) +  
  scale_color_viridis_c(guide = ___) + 
  theme_minimal() + 
  coord_sf(crs = 26911, datum = NA) + 
  labs(title = "Median owner-occupied housing value by Census tract", 
       ___ = "Marin County, California", 
       ___ = "Data source: 2012-2016 ACS.\nData acquired with the R tidycensus package.", 
       fill = "ACS estimate")