Hi Manivannan, thanks for answering the question, but in hindsight, I didn't ask the right question.
My problem is the following: I'd like to show a chart (ideally SplineAreaSeries but ColumnSeries will suffice) that has 50-5000 points, where the user can select a point and see which point they selected. As they drag their finger across the range, I'd like the point (or column) to show a marker/label.
ColumnSeries works well for up to 500 points before the column is too small to see the alternate color. SplineAreaSeries doesn't work because, with so many points, I have to hide the labels.
Ideally I can use SplineAreaSeries and only show the marker/label of the selected point, and use a custom marker so it's much larger than a 1/5000 of the range.
Can you think of a solution?