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Is there a way when a user hovers over a series, to dim the other series so the hovered series stands out more?
Something like detecting the user hovered over a series then enumerating the other series and setting the alpha to half of the original?
Yes, there is – one of our customers did this once. They used the SeriesSelectionModifier and used the Selected Series Style to make the StrokeThickness of the selected series 3px, while others were 1px.
The SeriesSelectionModifier currently works on click, but since you have the source code you may be able to subclass it and perform the selection on Mouse-Move not Mouse-Down.
Let me know if this helps!
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