first of all I describe my objective I want to achive. I want to visualise a continuous data stream (maximum 1000 values per second but could be reduced). This data str
Kai to make the change notification propagate to your bindings you should be making use of a collection which implements change notificaiton, PointCollection does not do this. You could create your own collection however I'd recommend making use of ObservableCollection.
In addition here is a similar SO post which also touches on a few other options for making the UI aware of your changes.