https://github.com/bizz84/flight_co2_calculator_flutter

Flutter package and sample app to calculate Flight CO2 emissions
https://github.com/bizz84/flight_co2_calculator_flutter

android dart flutter ios

Last synced: 3 days ago
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Flutter package and sample app to calculate Flight CO2 emissions

• Host: GitHub
• URL: https://github.com/bizz84/flight_co2_calculator_flutter
• Owner: bizz84
• License: mit
• Created: 2018-11-15T22:42:59.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2020-03-14T16:27:06.000Z (over 4 years ago)
• Last Synced: 2024-08-23T23:54:34.430Z (3 months ago)
• Topics: android, dart, flutter, ios
• Language: Dart
• Homepage: https://codewithandrea.com/
• Size: 1.83 MB
• Stars: 57
• Watchers: 5
• Forks: 20
• Open Issues: 5
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# 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](https://openflights.org/data.html).

- 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:

![](screenshots/FlightCalculator-screenshots.png)

## How to use it

Load data:

```dart

List airports = await AirportDataReader.load('data/airports.dat');

```

Create an `AirportLookup` service:

```dart

final airportLookup = AirportLookup(airports: airports);

```

Search for airports matching a query:

```dart

List results = airportLookup.searchString(query);

```

Calculate distance and CO2 emissions:

```dart

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](LICENSE)