Flutter package and sample app to calculate Flight CO2 emissions

Andrea Bizzotto

Last update: Sep 11, 2022

Overview

Flight CO2 Calculator

About

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.

What you can do with this

Build a Flight CO2 Calculator app such as this:

How to use it

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);
}

Example

See the sample Flight CO2 Calculator app bundled with the project in the example folder.

License: MIT

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Comments

The getter 'controller' isn't defined for the class 'BehaviorSubject'.

I get following error. Any idea how to fix it? Thanks

"flight_details_bloc.dart", "severity": 8, "message": "The getter 'controller' isn't defined for the class 'BehaviorSubject'.\nTry importing the library that defines 'controller', correcting the name to the name of an existing getter, or defining a getter or field named 'controller'.", "source": "dart", "startLineNumber": 124, "startColumn": 53, "endLineNumber": 124, "endColumn": 63, "tags": []

opened by sat12341234 1
Images only of one resolution

This is more of a question than an issue, I noticed you have included only one resolution image, I wonder how come your app did not get rejected on the AppStore. Not all iPhones use same resolution images. Or did you use different resolution images and not included in this GitHub repo. Can you please guide me how to include different resolution image and how to include them in pubspec.yaml

opened by PritishSawant 0