METAR Dart

A library for Dart developers.

Inspired from python-metar, a library writed in Python language to parse Meteorological Aviation Weather Reports (METAR and SPECI).

Current METAR reports

The current report for a station is available at the URL

http://tgftp.nws.noaa.gov/data/observations/metar/stations/<station>.TXT

where station is the ICAO station code of the airport. This is a four-letter code. For all stations at any cycle (i.e., hour) in the last hours the reports are available at the URL

http://tgftp.nws.noaa.gov/data/observations/metar/cycles/<cycle>Z.TXT

where cycle is the 2-digit cycle number (00 to 23).

Usage

A simple usage example:

import 'package:metar_dart/metar_dart.dart';

main() {
  String metarCode = 'METAR MROC 071200Z 10018KT 3000 R07/P2000N BR VV003 17/09 A2994 RESHRA NOSIG';
  final metar = Metar(metarCode);

  print('Type: ${metar.type}');

  // Get the wind speed in knots
  print('Wind speed: ${metar.windSpeed?.inKnot}');

  // Get the pressure in hecto pascals
  print('Pressure: ${metar.pressure?.inHPa}');

  // Get the temperature in fahrenheit
  print('Temperature: ${metar.temperature?.inFahrenheit}');
}

Features and bugs

Please file feature requests and bugs at the issue tracker.

Current Sources

The most recent version of this package is always available via git, only run the following command on your terminal:

git clone https://github.com/diego-garro/metar-dart

Authors

The python-metar library was originaly authored by Tom Pollard in january 2005. This package metar-dart for Dart Language is inspired from his work in 2020 by Diego Garro.

Versioning

This project uses Cider tool for versioning, so, if you fork this repository remember run the following command in your terminal to activate it

pub global activate cider

Special mentions

Thanks to the work made by @yeradis, who create the package units for starting point of measurements in Dart. I took the files directly because they have an issue in angle.dart that not resolved. Hope they do it soon.

The files are in lib/src/units/ folder:

• angle.dart
• length.dart
• speed.dart
• temperature.dart