Visiblox to SCICharts

Hi Julian,

Thank you for your enquiry! We don’t have any guides on specifically how to migrate Visiblox to SciChart, as ScIChart is a different product, and we are not Visiblox experts. That being said we welcome you to SciChart and are really pleased you like the performance of our WPF Charting software!

Regarding your questions:

1. As well as DataSeries.Remove, there is a DataSeries.RemoveAt overload, accepting an index. I would suggest using this

2. DataPoints are not supported in SciChart. We have omitted them deliberately as they tend to slow down the entire chart. As you have noted Visiblox cannot deliver high performance, and the data-model is one reason why. What you can do is set TextAnnotation.X1 and TextAnnotation.Y1 equal to the X,Y data value you wish to bind it to. That way the annotation will always track the data-point on the chart. We would also recommend limiting the amount of UIElement annotations on a chart, since these are WPF primitives and WPF is not very fast. One way of doing this is to show or hide ALL annotations depending on zoom level by removing or attaching the SciChartSurface.AnnotationCollection depending on SciChartSurface.VisibleRange.AsDoubleRange().Diff value.

3. We actually have a control which can do this for you. It’s called the SciChartOverview control. Also see our scrollbars API. Please see the following articles:

Scrolling a Chart with the SciChartOverview

Creating a Custom SciChartOverview with many series using Scrollbar API

Also see How to have a Fixed Scrolling Time-Range on the XAxis that works with Modifiers which shows how to update the XAxis to scroll to the latest portion of a waveform.

Best regards,
Andrew

Hi Julian,

Regarding your further questions:

1. 600-2000 annotations should not be a problem. Please see our FAQ performance with many annotations where one user achieved 50,000 annotations on a SciChartSurface (albeit, slowly).

2. Regarding overview control zoom limit, this is intentional to prevent the grips overlapping. It can be adjusted via the property SciChartScrollbar.ZoomLimitProperty (default=20pixels).

To set this on an overview you will need to apply the style SciChartOverview.ScrollBarStyleProperty. I would recommend not setting this closer than ~5px. Here is the default SciChartOverview.ScrollBarStyle:

<Style TargetType="visuals:SciChartScrollbar">
    <Setter Property="Orientation" Value="Horizontal" />
    <Setter Property="GripsLength" Value="25" />
    <!-- Adjust ZoomLimit to allow finer zooming -->
    <Setter Property="ZoomLimit" Value="20"/>
    <Setter Property="ViewportStyle">
        <Setter.Value>
            <Style TargetType="Control">
                <Setter Property="Opacity" Value="0" />
            </Style>
        </Setter.Value>
    </Setter>
    <Setter Property="NonSelectedAreaStyle">
        <Setter.Value>
            <Style TargetType="Path">
                <Setter Property="Fill" Value="{s:ThemeBinding Path=OverviewFillBrush}" />
            </Style>
        </Setter.Value>
    </Setter>
</Style>

For more info on styling the scrollbar, please see the article SciChartScrollbar – per axis ScrollBars API

Hope this helps!

Best regards,
Andrew