show big data point smartly

2 posts, 0 answers
  1. jzhou
    jzhou avatar
    7 posts
    Member since:
    Jul 2015

    Posted 27 Aug 2015 Link to this post

    Hello, 

    I create a datatemplate for PointTemplate of LineSeries, each point will be displayed as a small image, it works and show the image.

    The problem is if there are a lot of points in a small area, all images are overlapped, see image1.

    Is it possible to hide the images when the points are too close, and show the image when zoom + and the points have a enough space to show (see image2)

    Thanks

  2. Petar Marchev
    Admin
    Petar Marchev avatar
    968 posts

    Posted 31 Aug 2015 Link to this post

    Hello,

    There is no such a built-in feature that will allow you to do that.

    You can use custom logic to hide some of the point visuals. You can use a combination of the SizeChanged, ZoomChanged, PanOffsetChanged and DataBindingComplete events to run a custom method. In the method you can iterate all data points and check their LayoutSlots to see if they overlap. You can them set Opacity 0 to some of the data point visuals (GetDataPointVisual method of the series).

    Regards,
    Petar Marchev
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