I'm currently trying to achieve functionality similar to the trackball behavior, but I actually need to display a horizontal line, that crosses the given ScatterLineSeries and starts at the corresponding vertical axis. I have to draw a slider on that axis, so I will be able to move this line by moving the slider along the axis (I've attached an image to explain what I mean).
The problem is I can't determine the position of the vertical axis during runtime to place the slider on the correct location.
I can draw the horizontal line and intersection points using another ScatterLineSeries (as was done to create an attached image), but the series cannot be drawn outside the ChartArea, so I have to extend the line to an axis programmatically.
So, is it possible to get the Y-axis coordinates inside the ChartView, or is there another way to implement the described scenario?
Thanks in advance.