Hi, I have problem with the Y axis values, if you take a look here,
the numbers are not intuitive is there a way to fix it?
I tried to set the AutoTicks=”True” but it did nothing
the code
“`
<UserControl.Resources>
<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}"
local:GridHelpers.ColumnCount="1"
>
</Grid>
</ItemsPanelTemplate>
<Style x:Key="MinorTickLineStyle" TargetType="Line">
<Setter Property="Stroke" Value="White"/>
</Style>
</UserControl.Resources>
<Grid x:Name="MainGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<!-- 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"/>
</StackPanel>
</Border>
<!-- Chart Surface -->
<Grid Grid.Column="1" >
<s:SciChartSurface x:Name="scs"
RenderableSeries="{s:SeriesBinding Series}"
ViewportManager="{Binding ViewportManager}"
BorderThickness="2,2,2,0"
s:VisualXcceleratorEngine.EnableImpossibleMode="True"
LeftAxesPanelTemplate="{StaticResource YAxesPanel}"
Grid.Row="0"
MouseDoubleClick="OnChartMouseDown">
<s:SciChartSurface.XAxes>
<!-- Hidden Axis that tracks the data -->
<s:NumericAxis AutoRange="Always"
DrawMinorGridLines="False"
DrawMinorTicks="False"
DrawMajorGridLines="False"
DrawMajorTicks="False"
Visibility="Collapsed"
/>
<!--Hidden Axis that track the annotations' locations (All the added annotations have the same XAxis Id-->
<s:NumericAxis Name="SharedXAxisCommon"
AutoRange="Never"
VisibleRangeLimit="0,10"
Height="1"
Visibility="Hidden"
Id="CommonID_X"/>
</s:SciChartSurface.XAxes>
<s:SciChartSurface.YAxes >
<s:NumericAxis AutoRange="Never"
AutoTicks="True"
DrawMinorGridLines="False"
DrawMinorTicks="False"
DrawMajorGridLines="False"
DrawMajorTicks="True"
VisibleRange="0,8128000"
Visibility="Collapsed"/>
</s:SciChartSurface.YAxes>
<s:SciChartSurface.ChartModifier>
<s1:ModifierGroup>
<s1:YAxisDragModifier/>
<s:SeriesSelectionModifier >
<s:SeriesSelectionModifier.SelectedSeriesStyle>
<Style TargetType="s:BaseRenderableSeries">
</Style>
</s:SeriesSelectionModifier.SelectedSeriesStyle>
</s:SeriesSelectionModifier>
</s1:ModifierGroup>
</s:SciChartSurface.ChartModifier>
</s:SciChartSurface>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.3*"/>
<RowDefinition Height="2*"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="1" x:Name="InportValueTextBlock" Text="{Binding InportValue}" Margin="20,0,0,0" FontSize="14"/>
</Grid>
</Grid>
<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"/>
</StackPanel>
</Border>
</Grid>
“`
- Nasim Yehia asked 9 months ago
- last edited 9 months ago
- You must login to post comments
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.
- 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,
Andrew
- Andrew Burnett-Thompson answered 9 months ago
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