Original DC boundaries

dc.py

# GPT-4o-mini via duck.ai

import folium

# Create a map centered around the midpoint of the provided coordinates
# Tiles: https://python-visualization.github.io/folium/latest/user_guide/raster_layers/tiles.html
m = folium.Map(
    location=[38.895, -77.040],
    zoom_start=11,
    tiles="Cartodb dark_matter",
)

# Define the coordinates for the corners of the DC square including Arlington
# https://en.wikipedia.org/wiki/Boundary_markers_of_the_original_District_of_Columbia
dc_boundary = [
    [38.790339, -77.040586],  # South
    [38.893245, -77.172301],  # West
    [38.995957, -77.040986],  # North
    [38.892861, -76.909166],  # East
    [38.790339, -77.040586],  # Closing the loop back to South
]

centroid_lat = (38.790339 + 38.995957) / 2
centroid_lon = (-77.172301 + -76.909166) / 2
centroid = [centroid_lat, centroid_lon]

# Add a PolyLine to the map
folium.PolyLine(locations=dc_boundary, color="#70CEEF", weight=5, opacity=0.7).add_to(m)

# Add markers for each corner
folium.Marker(location=[38.790339, -77.040586], popup='South Corner').add_to(m)
folium.Marker(location=[38.893245, -77.172301], popup='West Corner').add_to(m)
folium.Marker(location=[38.995957, -77.040986], popup='North Corner').add_to(m)
folium.Marker(location=[38.892861, -76.909166], popup='East Corner').add_to(m)

# Save the map to an HTML file
m.save("dc_arlington_map.html")

# Display the map
m

https://dc-arlington-map.pages.dev/