Show rail routes using GeoJSON

This commit is contained in:
Edward Betts 2024-01-12 22:29:10 +00:00
parent 4e719a07ab
commit ba60e4b683
2 changed files with 47 additions and 8 deletions

View file

@ -124,10 +124,20 @@ coordinates.forEach(function(item) {
marker.bindPopup(item.name);
});
// Draw lines for routes
// Draw routes
routes.forEach(function(route) {
var color = route[0] === "train" ? "green" : "red"; // Green for trains, red for flights
L.polyline([route[1], route[2]], {color: color}).addTo(map);
if (route.geojson) {
// If route is defined as GeoJSON
L.geoJSON(JSON.parse(route.geojson), {
style: function(feature) {
return {color: route.type === "train" ? "green" : "blue"}; // Green for trains, blue for flights
}
}).addTo(map);
} else {
// If route is defined by 'from' and 'to' coordinates
var color = route.type === "train" ? "green" : "red"; // Green for trains, red for flights
L.polyline([route.from, route.to], {color: color}).addTo(map);
}
});
</script>

View file

@ -301,23 +301,52 @@ def latlon_tuple(stop: StrDict) -> tuple[float, float]:
return (stop["latitude"], stop["longitude"])
def get_trip_routes(
trip: Trip,
) -> list[tuple[str, tuple[float, float], tuple[float, float]]]:
def read_geojson(filename: str) -> str:
data_dir = app.config["PERSONAL_DATA"]
return open(os.path.join(data_dir, "train_routes", filename + ".geojson")).read()
def get_trip_routes(trip: Trip) -> list[StrDict]:
routes = []
seen_geojson = set()
for t in trip.travel:
if t["type"] == "flight":
if "from_airport" not in t or "to_airport" not in t:
continue
fly_from, fly_to = t["from_airport"], t["to_airport"]
routes.append(("flight", latlon_tuple(fly_from), latlon_tuple(fly_to)))
routes.append(
{
"type": "flight",
"from": latlon_tuple(fly_from),
"to": latlon_tuple(fly_to),
}
)
else:
assert t["type"] == "train"
for leg in t["legs"]:
train_from, train_to = leg["from_station"], leg["to_station"]
geojson_filename = train_from.get("routes", {}).get(train_to["uic"])
print(train_from["name"], train_to["name"], geojson_filename)
if not geojson_filename:
routes.append(
("train", latlon_tuple(train_from), latlon_tuple(train_to))
{
"type": "train",
"from": latlon_tuple(train_from),
"to": latlon_tuple(train_to),
}
)
continue
if geojson_filename in seen_geojson:
continue
seen_geojson.add(geojson_filename)
routes.append(
{
"type": "train",
"geojson": read_geojson(geojson_filename),
}
)
return routes