US Flight Paths Map

Mix.install([
  {:plotly_ex, "~> 0.3"},
  {:kino, "~> 0.18"}
])

Section

Multiple Scattergeo line traces represent different flight routes. layout.geo.scope: "north america" zooms the map to the region. Each trace is one route; showlegend: false declutters the legend.

alias Plotly.{Figure, Scattergeo}

routes = [
  {[40.7128, 34.0522], [-74.0060, -118.2437], "NYC → LA"},
  {[41.8781, 29.7604], [-87.6298, -95.3698], "Chicago → Houston"},
  {[47.6062, 25.7617], [-122.3321, -80.1918], "Seattle → Miami"},
  {[33.4484, 39.9526], [-112.0740, -75.1652], "Phoenix → Philadelphia"}
]

fig = Figure.new()

fig =
  Enum.reduce(routes, fig, fn {lats, lons, name}, acc ->
    Figure.add_trace(
      acc,
      Scattergeo.new(
        lat: lats,
        lon: lons,
        mode: "lines",
        name: name,
        line: %{width: 1, color: "red"},
        opacity: 0.5
      )
    )
  end)

fig
|> Figure.update_layout(
  title: "US Flight Paths",
  showlegend: false,
  geo: %{
    scope: "north america",
    projection: %{type: "azimuthal equal area"},
    showland: true,
    landcolor: "#EAEAAE",
    showocean: true,
    oceancolor: "#BDDDE4",
    countrycolor: "#d1d1d1",
    showcountries: true
  }
)
|> Plotly.show()