Handling large number of nodes

[Ian]

Hi everyone, this is more of a general question regarding bingmaps performance
I have roughyl 11000 seperate nodes i want to display on the map, this obviously slows down performance to a crawl so i am looking at ways i can perhaps group nodes or drill down nodes to display them all.

Does anyone have any experience with rendering large amounts of nodes on a map and any tips/tricks i can use to improve performance.

Thanks

[Andrey]

Hello Ian,

The rendering performance can be insufficient when you add a lot points on a map. I would recommend using the dynamic layer for loading shapes according to zoom level and region. Please take a look the Using Dynamic Layer topic of our documentation and the Items Virtualization example.
http://www.telerik.com/help/silverlight/radmap-features-dynamic-layer.html
http://demos.telerik.com/silverlight/#Map/DynamicLayer

I have attached two sample solutions which use 100000 random generated points. One of them uses the Dynamic Layer to show points. Second solution uses the information layer. It uses a  separate thread to select visible items from item collection. Also it selects visible items when the panning and zooming complete. It prevents hanging of UI thread during user's action.
I hope you can choose the approach which is more preffered for your application.

Regards,
Andrey Murzov
the Telerik team