Why in MountainRenderable I set XRange(0, 9), but chart always show gap?

Hi Chia Chun Tang,

Thanks for your question.
SciStockChart is a preconfigured SciChartSurface version having some properties on its elements set to default values. Please take a look at the corresponding article for more info:
https://www.scichart.com/documentation/win/current/webframe.html#SciStockChart%20-%20Simplified%20Financial%20Charts.html

The spaces you see on the sides are controlled by the Axis.GrowBy property:
https://www.scichart.com/documentation/win/current/webframe.html#SciChart.Charting~SciChart.Charting.Visuals.Axes.AxisCore~GrowBy.html

To get rid of these spaces you can override the default value by setting the GrowBy property for the XAxis to “0.0, 0.0”.

With best regards,

Lex S., MSEE
SciChart Technical Support Engineer

Hi Lex,
I follow the suggestion, set GrowBy to “0.0, 0.0”, and update my xaml code

<s:SciStockChart.XAxisStyle>
    <Style TargetType="s:CategoryDateTimeAxis">
        <Setter Property="FontSize" Value="{DynamicResource GlobalFontSize10}"/>
        <Setter Property="DrawLabels" Value="True" />
        <Setter Property="DrawMinorTicks" Value="False" />
        <Setter Property="DrawMajorTicks" Value="False" />
        <Setter Property="DrawMajorBands" Value="False" />
        <Setter Property="DrawMajorGridLines" Value="False" />
        <Setter Property="DrawMinorGridLines" Value="False" />
        <Setter Property="TextFormatting" Value="{Binding XAxisTextFormatting}" />
        <Setter Property="VisibleRange" Value="{Binding ParentViewModel.XRange, Mode=TwoWay}" />
        <Setter Property="VisibleRangeLimit" Value="{Binding ParentViewModel.XRangeLimit}"/>
        <Setter Property="AutoRange" Value="{Binding ParentViewModel.AutoRangeX}"/>
        <Setter Property="GrowBy" Value="0.0, 0.0"/>
    </Style>
</s:SciStockChart.XAxisStyle>

But the result is same, do I missing something?