@mmit/latlong
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    0.2.4 • Public • Published

    LatLong - Lightweight library for common latitude and longitude calculation

    Live-Example | GitHub-Home

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

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

    LatLong

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

    Basic usage

    Distance

        const distance = new Distance();
        
        // km = 423
        const km = distance.as(LengthUnit.Kilometer,
         new LatLng(52.518611,13.408056),new LatLng(51.519475,7.46694444));
        
        // meter = 422591.551
        const meter = distance.distance(
            new LatLng(52.518611,13.408056),
            new LatLng(51.519475,7.46694444)
            );

    Offset

        const distance = new Distance();
        const distanceInMeter = Math.round(EARTH_RADIUS * Math.PI / 4));
        
        const p1 = new LatLng(0.0, 0.0);
        const p2 = distance.offset(p1, distanceInMeter, 180);
        
        // LatLng(latitude:-45.219848, longitude:0.0)
        console.log(p2.round());
        
        // 45° 13' 11.45" S, 0° 0' 0.00" O
        console.log(p2.toSexagesimal());
                

    Path smoothing

        // zigzag is a list of coordinates
        const path = new Path.from(zigzag);
        
        // Result is below
        const steps = path.equalize(8,smoothPath: true);

    Smooth path

    For more - check out my tests

    Install

    npm i @mmit/latlong

    DownloadsWeekly Downloads

    383

    Version

    0.2.4

    License

    MIT

    Unpacked Size

    1.48 MB

    Total Files

    105

    Last publish

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