Hi, we have an upcoming requirement that goes like this:
"For a chart with multiple line series, users should be able to drag individual points up or down to a new value on the Y-axis, and have the line series recalculate either as the user drags, or once the user stops dragging. The new selection must update the underlying data source as well."
I'm pretty sure that this is not an out-of-the-box feature with the RadChart - at this stage though I need to know if this is a feature that can be added on top of the RadChart (via a custom line series or something similar) or if it is in the 'too hard' basket.
Can you provide any idea of how this functionality might be achieved with the RadChart or if it is too difficult to consider at the moment? A complete solution would be wonderful, of course!
Thanks very much,