Use the DiagramToPoint method to convert diagram coordinates of a point (measured in axis units) to the screen coordinates.
Note
For the opposite conversion (of screen coordinates to diagram coordinates), use the PointToDiagram method.

Example
This example demonstrates how to use a DiagramToPoint method to transform chart coordinates to screen coordinates.
MainWindow.xaml.cs |
ControlCoordinates controlCoordinates = diagram.DiagramToPoint(diagramCoordinates.DateTimeArgument, seriesValue);
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