Highlight a lineseries when mouse passes over

I think you need to implement a custom "plot controller" to do this. The standard behavior does not support hover (I suspect it will be add significant cpu load when implemented in the portable library...)

Thanks for the reply ! What i did was i subscribed to the mouse move event from the plot. In that event i am constantly looking for lineseries in a similar way the the tracker does and when it finds one it will highlight that one. It works although it is a little bit slow specially when there is a lot of lineseries in the plot.