iOS MapKit Overlay Coordinates

A dataset of countries borders for iOS (pList format). The dataset currently contains 50 US states and 13 European countries. Every country is identified by its country code (for example ITA for Italy, POR for Portugal).

How to encode for MapKit

 public static func getStates() -> [State] {
        guard let path = Bundle.main.path(forResource: "States", ofType: "plist"), let array = NSArray(contentsOfFile: path) else { return [] }
        var states = [State]()
        for item in array {
            let dictionary = item as? [String : Any]
            let code = dictionary?["code"] as? String
            let name = dictionary?["state"] as? String
            let borders = dictionary?["borders"] as! [NSArray]
            var points = [CLLocationCoordinate2D]()
            for coordinate in borders {
                let latitude = coordinate[0] as? Double ?? 0
                let longitude = coordinate[1] as? Double ?? 0
                let coordinate = CLLocationCoordinate2DMake(latitude, longitude)
                points.append(coordinate)
            }
            let state = State(code: code, name: name, borders: points)
            states.append(state)
        }
        return states as [State]
    }

Use Case

The dataset can be used to draw borders between countries using MKPolyline and MKPolygon from MapKit.

TODOs

• Add all European countries
• Add all US states