This article describes how to customize the trackball and apply the label formats to the trackball label.
The trackball label can be customized by using the TrackBallLabelTemplate property, which is available in series and chart axes. The ChartPointInfo uses as a data context for this template. You can get the X and Y values from the ValueX and ValueY, respectively.
The convertor is used where the label formatting is done for the trackball labels.
The following screenshot demonstrates customizing the trackball label information in which the ValueY is rounded off to six digits.
Figure 1 : TrackBall label customization.
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