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Using RolloverModifier with series containing NaN's as Y Values

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I am considering applying server-side licensing for my javerScript application.

In the document below, there is a phrase “Our server-side licensing component is written in C++.”
(https://support-dev.scichart.com/index.php?/Knowledgebase/Article/View/17256/42/)

However, there is only asp.net sample code on the provided github.
(https://github.com/ABTSoftware/SciChart.JS.Examples/tree/master/Sandbox/demo-dotnet-server-licensing)

I wonder if there is a sample code implemented in C++ for server-side licensing.

Can you provide c++ sample code?
Also, are there any examples to run on Ubuntu?

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Best Answer
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Hi Stuart,

Unfortunately, it isn’t possible with the current implementation of RolloverModifier (neither option). With a little overriding, it is possible to hide the line at all where Y values are NaNs. You need to override the TryUpdateOverlays method and check whether the hit-test was successful inside. Then set DrawVerticalLine to “False” if it wasn’t and to “True” otherwise.

Another option could be implementation of a custom Rollover. There is the article on this topic in our Knowledgebase:
http://support.scichart.com/index.php?/Knowledgebase/Article/View/17235/32/custom-chartmodifiers—part-1—creating-a-custom-rollover-modifier

Please let us know if you need further assistance with this,

  • Stuart McCullough
    Hi Yuriy Thanks for that, custom route it is by the looks of it. /Stuart
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