Calculate distance between two GeoJSON features

Question

i'm using GeoJSON.Net library ( https://github.com/GeoJSON-Net/GeoJSON.Net ) to create some GeoJSON features in my code. Points, multilines etc. All that works fine until i need to calculate distance between some pair of features. This library does not have any ability to do that.

I've tried using GeoJSON.Net.Contrib.MsSqlSpatial (https://www.nuget.org/packages/GeoJSON.Net.Contrib.MsSqlSpatial ) to convert features to SqlGeographies and then use the method on that type to calculate the distance. That works perfectly with one caveat: it's .NET Framework-only. The library is not available for .NET Core.

Please note, that I need an ability to calculate distance between two arbitrary features - points, multilines, polygons and not just between two points. This has to be done for SRID 4326 (WGS84).

Any idea?

Best regards, Dmytro.

Answer 1

GeoJSON.Net is just a library to de-serialize GeoJSON according to RFC 7946.

For calculating distances you could either write your own implementation, or use one of the existing libraries like Geolocation .

For convenience you can write some extension methods.

public static class PositionExtension
{
    public static double GetDistanceTo(this Position origin, Position destination,
        DistanceUnit unit = DistanceUnit.Kilometers)
    {
        return GeoCalculator.GetDistance(
            origin.Latitude, origin.Longitude,
            destination.Latitude, destination.Longitude, distanceUnit: unit);
    }
}