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I am going to rewrite chart from some medical software to WPF. The chart is pretty complex and to save time I decided to use/buy 3rd party control. I understand to answer specifically you need more details but could you advise best WPF chart control from your personal experience.
Full disclosure: I own SciChart Ltd and was involved in the development of SciChart
Admitedly I am biased, but I have developed a lightweight chart component for precisely this use. There are plenty of choices for WPF chart components, but few that offer truly high performance for scientific or financial use.
As a response to this need, I created a high performance WPF chart component called SciChart. SciChart seeks to fill the gap for ultra high performance scientific / stock charts and as part of its optimisation it uses proprietary resampling algorithms to reduce the dataset before drawing, immediate mode rendering and a host of other optimisations such as object pooling and resource re-use.
Please click on following link to view a performance comparison. The chart is able to draw multiple series totalling 5 or 6-figure point counts at interactive framerates (30FPS depending on hardware). This is equivalent to around 2million datapoints per second.
Best regards,