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WPF Surface YAxis values are not intuitive

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Hi, I have problem with the Y axis values, if you take a look here,

image of scichart surface

the numbers are not intuitive is there a way to fix it?

enter image description here

I tried to set the AutoTicks=”True” but it did nothing

the code


    <BooleanToVisibilityConverter x:Key="b2vc"/>
    <local:BoolToAxisAutoRangeConverter x:Key="AutoRangeConverter" />
    <local:StarsConverter x:Key="conv"/>
    <ItemsPanelTemplate x:Key="YAxesPanel" >
        <Grid local:GridHelpers.RowCount="{Binding RowsCount}"
              local:GridHelpers.StarRows="{Binding RowsCount, Converter={StaticResource conv}, Mode=OneWay}"

    <Style x:Key="MinorTickLineStyle" TargetType="Line">
        <Setter Property="Stroke" Value="White"/>


<Grid x:Name="MainGrid">
        <ColumnDefinition Width="*"/>

    <!-- Toolbar -->
    <Border Style="{DynamicResource OriginalBorderBright}" BorderThickness="0" Canvas.ZIndex="9999" Visibility="Collapsed">
        <StackPanel Orientation="Vertical">
            <RadioButton x:Name="RunBtn" Command="{Binding RunCommand}" IsChecked="True" Visibility="Hidden"/>
            <RadioButton x:Name="PauseBtn" Visibility="Hidden"/>

    <!-- Chart Surface -->
    <Grid Grid.Column="1" >

        <s:SciChartSurface x:Name="scs" 
                           RenderableSeries="{s:SeriesBinding Series}" 
                           ViewportManager="{Binding ViewportManager}"
                           LeftAxesPanelTemplate="{StaticResource YAxesPanel}"

                <!-- Hidden Axis that tracks the data -->
                <s:NumericAxis AutoRange="Always"
                <!--Hidden Axis that track the annotations' locations (All the added annotations have the same XAxis Id-->
                <s:NumericAxis Name="SharedXAxisCommon"  

            <s:SciChartSurface.YAxes >
                <s:NumericAxis AutoRange="Never"
                    <s:SeriesSelectionModifier >
                            <Style TargetType="s:BaseRenderableSeries">

                <RowDefinition Height="0.3*"/>
                <RowDefinition Height="2*"/>
            <TextBlock Grid.Row="1" x:Name="InportValueTextBlock" Text="{Binding InportValue}" Margin="20,0,0,0" FontSize="14"/>

    <Border Grid.Column="1" Style="{DynamicResource OriginalBorderBright}" Visibility="{Binding IsLoading, Mode=OneWay, Converter={StaticResource b2vc}}">
        <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
            <ProgressBar Background="Transparent" BorderThickness="0"  HorizontalAlignment="Center" IsIndeterminate="True" Height="10" Width="{Binding ActualWidth, Mode=OneWay, ElementName=Test}"/>
            <TextBlock x:Name="Test" Text="{Binding LoadingMessage, Mode=OneWay}" FontSize="16" Foreground="{DynamicResource ControlDefaultForeground}" Margin="0,10" TextAlignment="Center" Opacity="0.7"/>


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Good morning Nasim,

In order to change the number of yAxis Labels on a chart in SciChart, there are several APIs that can be used.

These methods are discussed in the documentation page Axis Ticks –
MajorDelta, MinorDelta and AutoTicks

1. Automatic tick placement with MaxAutoTicks hint

Using Axis.AutoTicks = true if you also set Axis.MaxAutoTicks = 5 (or another number) it will send a hint to the tick calculation engine to have at most this number of ticks. Additional properties which can affect label output include Axis.IsLabelCullingEnabled

Note: this is a Hint not a specific value

2. Manual tick placement with MajorDelta, MinorDelta

Using Axis.AutoTicks = false if you then set Axis.MajorDelta = 5 and Axis.MinorDelta = 1 you can specify that every ‘5’ there will be a label plus major gridline and every ‘1’ a minor gridline.

Note, this method is not dynamic and will not adjust on zoom. If you set MajorDelta too small you can also generate too many ticks causing performance problems.

  1. Full control over axis ticks with TickProvider

This method is the most complex but offers the most flexibility. Using the TickProvider and DeltaCalculator API you can create a class which tells SciChart specifically what major and minor ticks to use.

This method is the most flexible. An example DeltaCalculator is as follows:

public class CustomNumericDeltaCalculator : IDeltaCalculator
       private const uint DefaultTicksCount = 10;

       /// <summary>
       /// Given an absolute Axis Min and Max, returns a TickRange instance containing sensible MinorDelta and MajorDelta values
       /// </summary>
       public IAxisDelta<double> GetDeltaFromRange(double min, double max, int minorsPerMajor, uint maxTicks = DefaultTicksCount)
             // Given the min = Axis.VisibleRange.Min,
             //       the max = Axis.VisibleRange.Max
             //       minorsPerMajor = requested minor ticks per major ticks
             //       maxTicks = requested maximum number of major ticks
             // Note: Your delta calculation here to calculate minorDelta, majorDelta
             double deltaMin, deltaMax;

             // Return an AxisDelta
             return new DoubleAxisDelta(deltaMin, deltaMax);

       IAxisDelta IDeltaCalculator.GetDeltaFromRange(IComparable min, IComparable max, int minorsPerMajor, uint maxTicks)
             return GetDeltaFromRange(min.ToDouble(), max.ToDouble(), minorsPerMajor, maxTicks);

// Usage
public class NumericAxisEx : NumericAxis
    private IDeltaCalculator _customDeltaCalculator = new CustomNumericDeltaCalculator();
    protected override IDeltaCalculator GetDeltaCalculator()
        return _customDeltaCalculator;

This can return to SciChart the exact major & minor deltas to use for a specific zoom level.

Further examples including TickProviders can be found in the
documentation page TickProviders & DeltaCalculators

Hope this helps,

Best regards,

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