This plugin provides a collection of classes that can be used to:
- Load a list of airports from the OpenFlights.org dataset.
- Lookup airports matching a search query against the entire data-set of airports.
- Calculate the distance and CO2 emissions from flights.
Build a Flight CO2 Calculator app such as this:
Load data:
List<Airport> airports = await AirportDataReader.load('data/airports.dat');Create an AirportLookup service:
final airportLookup = AirportLookup(airports: airports);Search for airports matching a query:
List<Airport> results = airportLookup.searchString(query);Calculate distance and CO2 emissions:
class FlightCalculationData {
FlightCalculationData({this.distanceKm, this.co2e});
final double distanceKm;
final double co2e;
}
FlightCalculationData _calculate(FlightDetails flightDetails) {
double distanceKm;
double co2e;
Airport departure = flightDetails.departure;
Airport arrival = flightDetails.arrival;
if (departure != null && arrival != null) {
double multiplier =
flightDetails.flightType == FlightType.oneWay ? 1.0 : 2.0;
distanceKm = DistanceCalculator.distanceInKmBetween(
departure.location, arrival.location);
distanceKm = CO2Calculator.correctedDistanceKm(distanceKm);
co2e =
CO2Calculator.calculateCO2e(distanceKm, flightDetails.flightClass) *
multiplier;
}
return FlightCalculationData(distanceKm: distanceKm, co2e: co2e);
}See the sample Flight CO2 Calculator app bundled with the project in the example folder.