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I want to have a BoxAnnotation where Y1 (- double.Infinity) and Y2 (+ double.Infinity). Basically I wanna specify only X1 and X2. And the behaviour must ensure always the box annotations Y1 & Y2 stretch to visible area even when I resize (zoomout) the chart.

In the screen shot its not stretched.

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Best Answer
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Hi Jerome,

The property you are looking for is AnnotationBase.CoordinateMode. It’s hard to find but we have several FAQs on CoordinateMode. This one is perhaps the best:

https://www.scichart.com/questions/question/how-to-find-the-currently-visible-extents-of-the-x-axis

I would advise against setting BoxAnnotation.Y1, Y2 to +/- infinity as this might cause a crash in WPF itself (infinite sized UIElement).

Best regards,
Andrew

  • Jerome Mohanan
    Hello Andrew,How do we extend this to specify AnnotationCoordinateMode.RelativeX1, AnnotationCoordinateMode.RelativeX2, AnnotationCoordinateMode.RelativeY1, AnnotationCoordinateMode.RelativeY2 individually.
  • Andrew
    Hi Jerome, you can't. We only supply RelativeX, RelativeY, Relative or Absolute modes. If you want to snap one corner of an annotation to an axis maximum I would suggest binding to Axis.VisibleRange.Min or Max. Best regards, Andrew
  • Jerome Mohanan
  • Andrew
    Hi Jerome, we're still thinking about that one... its not something we support and need time to consider the best approach
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