Hi,
Before using XamMap, we used Bing Maps to draw pushpins on top of Bing Maps (Silverlight). We could show ~5000 pushpins while still navigating quite fluently. The pushpins are just jpg files (because they render faster than .xaml pushpins)
Now we also needed, along with the pushpins, shape files. This is technically feasible with XamMap, but when we render the same map with the same pushpins (jpg files), navigating the map becomes practically impossible with 5000 pushpins.
Is it possible to increase the performance for this? What is the threshold for pushpins to be displayed on the map?
We already add the points by first creating an empty elemencollection
MapElementCollection elementCollection = new MapElementCollection();
adding the elements to this collection and at the end setting
map.Layers["symbolLayer"].Elements = elementCollection;
Thanks in advance,
Roel
Hi Roel,
To increase map performance try to decrease the number of elements that are visible and show them when the zoom level is high enough. Please take a look at this sample: https://es.infragistics.com/samples/silverlight/map/#/map-drilldown. The sample is using MapLayer's VisibleFromScale property to adjust the minimum scale at which the layer becomes visible.
You can also attach to XamMap's WindowRectChanged event and add or remove pushpins when they are needed or redundant.
There are a couple of properties that can affect map performance. Try setting XamMap's WindowAnimationMode to MapWindowAnimationMode.None and Pushpins's IsClickable and IsSensitive to false.
Please let me know if this works for you.
Regards,
Ivan Kotev
Hi Ivan,
Thanks for the suggestion.
While working with the VisibleFromScale makes the navigation have a better performance, sometimes just makes sense to show a lot of datapoints from a zoomed out area, because it makes you view clusters for a region. I'm talking about ~5000 .png pictures on a map.
Is there any performance improvement coming up for xammap at this level?
The pushpins need IsClickable, because I want to show a popup when the pushpin is clicked.
Br,