Is it possible to find nearest location to a given location

[Rod Yager]

Say I have a collection of locations and I want to find out which one is the closest to another specified location, how would I do this?

Thanks,
Rod

[Andrey]

Hi Rod Yager,

You can find out the closest point to the location using calculation of distance between the location and elements of the collection. You can create the LocationRect instance from two locations and then calculate a distance using Width and Height properties.

The sample method is below.

private Location GetNearestLocation(LocationCollection collection, Location point)

{

    double minDistance = double.PositiveInfinity;

    Location nearestLocation = Location.Empty;


    foreach (Location location in collection)

    {

        LocationRect rect = new LocationRect(location, point);

        rect.MapControl = this.radMap;


        double distance = Math.Sqrt(rect.Width * rect.Width + rect.Height * rect.Height);


        if (distance < minDistance)

        {

            minDistance = distance;

            nearestLocation = location;

        }

    }


    return nearestLocation;

}

Best wishes,
Andrey Murzov
the Telerik team