How can I align a DataTip to the vertical center of the corresponding column? I've tried creating a custom dataTipRenderer, but it seems to me that there I can only move the datatip relative to the target (the circle graphic). But that position's just fine, I'd like to move the target itself.
My last idea is to set the showDataTipTargets style of the chart to false and draw the targets within the custom dataTipRenderer. I consider this a dirty hack, so if there's anything more friendly I'd go with that. Plus, in this case, how can I tell the column center coordinates in the datatip renderer's updateDisplayList function?