# latlong2 0.9.1 latlong2: ^0.9.1 copied to clipboard

Lightweight library for common latitude and longitude calculation

This is a fork of https://github.com/MikeMitterer/dart-latlong. The goal is to keep it up to date with Dart language changes.

## LatLong provides a lightweight library for common latitude and longitude calculation. #

This library supports both, the "Haversine" and the "Vincenty" algorithm.

"Haversine" is a bit faster but "Vincenty" is far more accurate!

Catmull-Rom algorithm is used for smoothing out the path.

## Basic usage #

### Distance #

``````    final Distance distance = new Distance();

// km = 423
final int km = distance.as(LengthUnit.Kilometer,
new LatLng(52.518611,13.408056),new LatLng(51.519475,7.46694444));

// meter = 422591.551
final int meter = distance(
new LatLng(52.518611,13.408056),
new LatLng(51.519475,7.46694444)
);

``````

## Offset #

``````    final Distance distance = const Distance();
final num distanceInMeter = (earthRadius * math.pi / 4).round();

final p1 = new LatLng(0.0, 0.0);
final p2 = distance.offset(p1, distanceInMeter, 180);

// LatLng(latitude:-45.219848, longitude:0.0)
print(p2.round());

// 45° 13' 11.45" S, 0° 0' 0.00" O
print(p2.toSexagesimal());

``````

## Path smoothing #

``````    // zigzag is a list of coordinates
final Path path = new Path.from(zigzag);

// Result is below
final Path steps = path.equalize(8,smoothPath: true);
``````

## Features and bugs #

Please file feature requests and bugs at the issue tracker.

``````Copyright 2015 Michael Mitterer (office@mikemitterer.at),
IT-Consulting and Development Limited, Austrian Branch

you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing,
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
either express or implied. See the License for the specific language
governing permissions and limitations under the License.
``````

If this plugin is helpful for you - please (Circle) me or star this repo here on GitHub

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### Publisher

defylogic.dev

Lightweight library for common latitude and longitude calculation