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If I set AutoRange = “Always” myHorizontalLineAnnotation draws fine. When I set it to “Never” – which I want – my HorizontalLineAnnotation won’t draw. How do I do this? ty

  <s:SciChartSurface.YAxis>
        <s:NumericAxis AutoRange="Never"
                       VisibleRange="{Binding ElementName=this, Path=YMinMax}"

        <s:HorizontalLineAnnotation HorizontalAlignment="Stretch"
                                    Y1="{Binding ElementName=this, Path=CurrentHigh}"
                                    Stroke="{Binding ElementName=this, Path=ToleranceColor}"
                                    StrokeThickness="1" />
0 votes
2k views

Hello,

I need help in adding multiple Horizontal Line Annotations to my chart.

My chart has multiple data series and hence the need for multiple annotations. I have the following code but it does not seem to work.

Not even one Annotation gets displayed.

Please help !

<s:SciChartSurface RenderableSeries="{Binding ChartRenderableSeries}" Annotations="{Binding ThresholdCollection}" >
            <s:SciChartSurface.XAxis>
                <s:DateTimeAxis  AxisTitle="Time" VisibleRange="{Binding Settings.XVisibleRange, Mode=TwoWay}" />
            </s:SciChartSurface.XAxis>
            <s:SciChartSurface.YAxis>
                <s:NumericAxis AxisTitle="Values" VisibleRange="-30,30" AutoRange="Always"/>
            </s:SciChartSurface.YAxis>



public ObservableCollection<HorizontalLineAnnotation> ThresholdCollection { get; set; }

Every time user adds a Threshold, the following code gets executed.

var threshholdObj = new HorizontalLineAnnotation
            {
                Name="Threshold" ,
                Y1 = 2,
                Stroke= System.Windows.Media.Brushes.Blue
            };
            ThresholdCollection.Add(threshholdObj);
0 votes
2k views

Hi!
I have the following xaml code for HorizontalLineAnnotations. I have a viewmodel with simple properties for WasteMaxValue etc.
I don’t get any binding errors. Sometimes everything works as expected when I start up. Sometimes the lines show up but they wont follow when I resize the view (and the graph). Sometimes the lines don’t show up at all.
If I do a very fast “pan” with the mouse so that the graph data moves outside the graph, the lines show up and they follow when I resize the view and the graph. Have you experienced this before? Is it an obvious error?

            <s:SciChartSurface.Annotations>
                <s:HorizontalLineAnnotation HorizontalAlignment="Stretch" 
                    Y1="{Binding WasteMaxValue}" Stroke="Red" StrokeThickness="2">
                </s:HorizontalLineAnnotation>
                <s:HorizontalLineAnnotation HorizontalAlignment="Stretch" 
                    Y1="{Binding WasteMinValue}" Stroke="Red" StrokeThickness="2">
                </s:HorizontalLineAnnotation>
                <s:HorizontalLineAnnotation HorizontalAlignment="Stretch" 
                    Y1="{Binding WarningMaxValue}" Stroke="Yellow" StrokeThickness="2">
                </s:HorizontalLineAnnotation>
                <s:HorizontalLineAnnotation HorizontalAlignment="Stretch" 
                    Y1="{Binding WarningMinValue}" Stroke="Yellow" StrokeThickness="2">
                </s:HorizontalLineAnnotation>
                <s:HorizontalLineAnnotation HorizontalAlignment="Stretch" 
                    Y1="{Binding SetValue}" Stroke="Green" StrokeThickness="2">
                </s:HorizontalLineAnnotation>
        </s:SciChartSurface.Annotations>
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