Exact Same Location.

[kwstasna]

Hey guys and very nice work! Congrats to all of you :clap: Although I have one question.

I'm running one app about Events. And some Venues have multiple Events in the exact same location (lat, lon) in the map. Do we have a workaround about it? Cause if i zoom in this location spot, the cluster doesn't break. And this is normal. Thanks a lot !

[muh-azharudheen]

same issue here

[efremidze]

thanks for reporting this, ill push a fix

[efremidze]

what do u prefer, displaying just one annotation there?

[kwstasna]

It would be great to show them all for example in a circle around the location.

[muh-azharudheen]

issue is 2 annotation in exact place not showing can't zoom its showing the cluster only

[MaeseppTarvo]

It would be awesome to see something like this in this library: https://stackoverflow.com/questions/44698027/correctly-handle-clustering-when-markers-are-placed-identically-and-overlapping

My question was based on Google maps but I switched to AppleMaps and would like to use this library for clustering and would like to be able to make them appear in the circle like in the stackoverflow question.

[efremidze]

Thanks Ill fix asap.

[Alex293]

That indeed would be a good solution !

[kwstasna]

Hello and thanks for the fix. I've updated the pod but now when i zoom the Cluster pin dissapears and there is no other regular pins. Can you point me if you changed anything to the example code ?

[efremidze]

I'm not seeing any issues. What device, iOS version, etc?

[kwstasna]

iPhone SE, iOS 10.3.3, Xcode 8.3.3, Swift 3

With the following custom code of mine.

import UIKit
import MapKit
import Cluster

class EventAnnotation : MKPointAnnotation {
    var myEvent:Events?
    var myRealmEvent:RealmEventNew?
}

extension CGRect{
    init(_ x:CGFloat,_ y:CGFloat,_ width:CGFloat,_ height:CGFloat) {
        self.init(x:x,y:y,width:width,height:height)
    }

}

class ClusterMapViewController: UIViewController, MKMapViewDelegate {

    @IBOutlet weak var mapView: MKMapView!
    @IBOutlet weak var eventCount: UILabel!

    let manager = ClusterManager()
    lazy var events = [Events]()
    var add: Double!
    var newLat: Double!
    var counter = 0
    var tileRenderer: MKTileOverlayRenderer!
    override func viewDidLoad() {
        super.viewDidLoad()

        mapView.delegate = self
        mapView.showsUserLocation = true
        mapView.setUserTrackingMode(.follow, animated: true)

        manager.minimumCountForCluster = 3
        manager.shouldRemoveInvisibleAnnotations = false
        for event in events {
            let eventpins = EventAnnotation()
            eventpins.myEvent = event // Here we link the event with the annotation
            eventpins.title = event.eventName
            eventpins.coordinate = CLLocationCoordinate2D(latitude: event.eventLat, longitude: event.eventLon)
manager.add(eventpins)

        eventCount.text = "\(events.count) Events Nearby"
    }

    @IBAction func goToUser(_ sender: Any) {
        self.mapView.setUserTrackingMode( MKUserTrackingMode.follow, animated: true)

    }
    deinit {
        print("deinit cluster")
        if events.isEmpty == false {
            events.removeAll(keepingCapacity: false)
        }
        mapView.mapType = .standard
        mapView.removeFromSuperview()
        mapView.delegate = nil
    }

    func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer
    {

        if overlay is MKTileOverlay
        {
            let renderer = MKTileOverlayRenderer(overlay:overlay)

            renderer.alpha = 0.8

            return renderer
        }
        return MKOverlayRenderer()
    }

    func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
        let reuseId:String
        switch annotation {
        case is MKUserLocation:
            return nil // blue pulsy dot
        case is ClusterAnnotation:
            reuseId = "Cluster"
            var clusterView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId)
            clusterView = ClusterAnnotationView.init(annotation: annotation, reuseIdentifier: reuseId, type:.color(UIColor.init(hexString: "#2E294E"), radius: 25))
            return clusterView
        default:
            reuseId = "Pin"
            var pinView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId)
            if pinView != nil {
                pinView!.annotation = annotation
            } else {
                pinView = MKAnnotationView(annotation: annotation, reuseIdentifier: reuseId)

                pinView!.image = UIImage.init(named: "pin")
                pinView!.canShowCallout = false
            }
            return pinView
        }
    }

    func mapView(_ mapView: MKMapView, regionDidChangeAnimated animated: Bool) {
        manager.reload(mapView, visibleMapRect: mapView.visibleMapRect)
    }

    func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
        guard let annotation = view.annotation else { return }
        if view.annotation!.isKind(of: MKUserLocation.self){
            return
        }
        if let cluster = annotation as? ClusterAnnotation {
            mapView.removeAnnotations(mapView.annotations)

            var zoomRect = MKMapRectNull
            for annotation in cluster.annotations {
                let annotationPoint = MKMapPointForCoordinate(annotation.coordinate)
                let pointRect = MKMapRectMake(annotationPoint.x, annotationPoint.y, 0, 0)
                if MKMapRectIsNull(zoomRect) {
                    zoomRect = pointRect
                } else {
                    zoomRect = MKMapRectUnion(zoomRect, pointRect)
                }
            }
            manager.reload(mapView, visibleMapRect: zoomRect)
            mapView.setVisibleMapRect(zoomRect, animated: true)
        } else if let eventAnnotation = view.annotation as? EventAnnotation {
                    let theEvent = eventAnnotation.myEvent
                    let customView = (Bundle.main.loadNibNamed("CustomCalloutView", owner: self, options: nil))?[0] as! CustomCalloutView;
                    let calloutViewFrame = customView.frame;
                    customView.frame = CGRect(x: -calloutViewFrame.size.width/2.23, y: -calloutViewFrame.size.height-7, width: 315, height: 200)
                    customView.configureCell(events: theEvent!)

                    view.addSubview(customView)

                }
    }

    func mapView(_ mapView: MKMapView, didDeselect view: MKAnnotationView)
    {
        for childView:AnyObject in view.subviews{
            childView.removeFromSuperview();
        }
    }

}
extension UIImage {

    func filled(with color: UIColor) -> UIImage {
        UIGraphicsBeginImageContextWithOptions(size, false, scale)
        color.setFill()
        guard let context = UIGraphicsGetCurrentContext() else { return self }
        context.translateBy(x: 0, y: size.height)
        context.scaleBy(x: 1.0, y: -1.0);
        context.setBlendMode(CGBlendMode.normal)
        let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
        guard let mask = self.cgImage else { return self }
        context.clip(to: rect, mask: mask)
        context.fill(rect)
        let newImage = UIGraphicsGetImageFromCurrentImageContext()!
        UIGraphicsEndImageContext()
        return newImage
    }

}

class BorderedClusterAnnotationView: ClusterAnnotationView {
    let borderColor: UIColor

    init(annotation: MKAnnotation?, reuseIdentifier: String?, type: ClusterAnnotationType, borderColor: UIColor) {
        self.borderColor = borderColor
        super.init(annotation: annotation, reuseIdentifier: reuseIdentifier, type: type)
    }

    required public init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    override func configure(with type: ClusterAnnotationType) {
        super.configure(with: type)

        switch type {
        case .image:
            layer.borderWidth = 0
        case .color:
            layer.borderColor = borderColor.cgColor
            layer.borderWidth = 2
        }
    }
}

[efremidze]

where do u add annotations? manager.add(eventpins)

[kwstasna]

Accidentaly deleted it on edit. Although on my code i have it properly.

I edited the above comment. This is the issue with images. On the first image you can see that there are 19 pins inside a cluster.

and when i tap the cluster

there are no pins on the map!

[efremidze]

ur removing all the annotations on select? mapView.removeAnnotations(mapView.annotations)

[kwstasna]

If i comment this line, then when i select the Cluster, it is still there! So i only remove the clusters. and not the normal pins

[efremidze]

I'm still not seeing that issue.

demo.zip

[kwstasna]

@efremidze don't forget that in your example inside this repo, there are no pins on the exact same location. This is my issue, that even after the update of the pod, the pins that are in the exact same location don't show up!

[efremidze]

Ill add pins in the same location and try to reproduce.

[sasha9878]

Any solution for this ?