Clustered Streampoints disapear after browser refreh

[weismantelf]

Hello,

I was trying to use the clustering feature of with the streampoint collection.

I am using the following code to change the appearance of my stream points:

` protected async Task onAfterMapLoaded(RealTimeMap.MapEventArgs args)
{

 var realTimeMap = args.sender as RealTimeMap;

 args.sender.Geometric.Points.changeExtentWhenAddPoints = false;

 args.sender.Geometric.Points.clusteringAfterCollectionUpdate = true;


 var points = new List<RealTimeMap.StreamPoint>();

 foreach(var x in _buildingLookup.GetLocations())
 {
     if (x.WayPoint is null) continue;

     var point = new RealTimeMap.StreamPoint
     {
         guid = x.UID,                   //the use of GUID identification is mandatory
         latitude = x.WayPoint.XPos,     //the latitude of the map click point
         longitude = x.WayPoint.YPos,    //the longitude of the map click point                    
     };

     points.Add(point);
 }

 
 realTimeMap.Geometric.Points.Appearance(item => true).pattern = new RealTimeMap.PointSymbol()
 {
     radius = 12,
     fillColor = "red",
     opacity = 1
 };



 if (points is { Count: > 0 })
 {
     await realTimeMap.Geometric.Points.upload(points);
 }


 await InvokeAsync(StateHasChanged);

}`

So the code is just taking some geo-locations and add them to the Geometric.Points. In my dataset are some geo-locations close together, so
I see on my map a cluster and and one red circle. When I am now press F5 to refresh the browse, the stream-points disappear.

I was then testing some of your samples like Working with StreamPoint/Clustering/clustering. And here the same thing happen when refreshing the browser.

[ichim]

Hello sir,
I will check and troubleshoot. I am currently working on a new version of the StreamPoint collection, which I am optimizing and adding more functionality (Ex. SigmaDrone type charts).

Sorry for the inconvenience. The entire C# -> JavaScript calling part is rewritten for the new component (Map).

[weismantelf]

Hello,

I understand. In my project I have to monitor radios. In some situations it is possible that a few
of them are on the same location. So I wanted to use the clustering for this.

Is it possible to change the Z order of the streaming points?

[ichim]

Hello again,
Good questions!
StreamPoint is seen as an infinitesimal element in the map, without dimensions. However, a circle is used for display (example). Yes, a z-ordering would be necessary. Now it is not, sorry!

[weismantelf]

Hello,

thx for your fast response. I found also the reason why the clustering is not always working for me.
It must be a bug or security setting in Firefox ( using V 151.0.1). With Microsoft Edge it is working
without any problems. In Chrome it works the most times. The difference to Firefox is that the points
and cluster do not disappear from the screen. In Chrome sometimes a normal steaming point is shown
instead of the cluster symbol.