Class LogarithmicAxis

The logarithmic axis uses a logarithmic scale, ideal for displaying data with a wide range of values, and it displays logarithmically scaled numbers as labels.

Inheritance
System.Object
ChartAxis
RangeAxisBase
LogarithmicAxis
Implements
System.ComponentModel.INotifyPropertyChanged
Inherited Members
Namespace: Syncfusion.UI.Xaml.Charts
Assembly: Syncfusion.Chart.WinUI.dll
Syntax
public class LogarithmicAxis : RangeAxisBase, INotifyPropertyChanged
Remarks

This axis can be oriented both horizontally and vertically. To render a logarithmic axis, create an instance of LogarithmicAxis and add it to the XAxes or YAxes collection as shown below.

<chart:SfCartesianChart>

        <chart:SfCartesianChart.XAxes>
            <chart:LogarithmicAxis LogarithmicBase="10"/>
        </chart:SfCartesianChart.XAxes>

        <chart:SfCartesianChart.YAxes>
            <chart:LogarithmicAxis LogarithmicBase="10"/>
        </chart:SfCartesianChart.YAxes>

</chart:SfCartesianChart>

Base Value - Set the logarithmic base with the LogarithmicBase property.

Header - To render the header, refer to this Header property.

Grid Lines - Customize major and minor grid lines using the ShowMajorGridLines, MajorGridLineStyle, MinorTicksPerInterval, and MinorGridLineStyle properties.

Tick Lines - Customize major and minor tick lines using the MajorTickStyle, MinorTickStyle, and MinorTicksPerInterval properties.

Axis Line - Customize the axis line with the AxisLineStyle property.

Range Customization - Set a specific range using the Minimum and Maximum properties.

Labels Customization - Customize labels using the LabelStyle property.

Inversed Axis - Inverse the axis by setting the IsInversed property.

Interval - Define the interval between labels with the Interval property for greater control over label placement.

Constructors

LogarithmicAxis()

Initializes a new instance of the LogarithmicAxis class.

Declaration
public LogarithmicAxis()

Fields

IntervalProperty

The DependencyProperty for Interval property.

Declaration
public static readonly DependencyProperty IntervalProperty
Field Value
Type
Microsoft.UI.Xaml.DependencyProperty

LogarithmicBaseProperty

The DependencyProperty for LogarithmicBase property.

Declaration
public static readonly DependencyProperty LogarithmicBaseProperty
Field Value
Type
Microsoft.UI.Xaml.DependencyProperty

MaximumProperty

The DependencyProperty for Maximum property.

Declaration
public static readonly DependencyProperty MaximumProperty
Field Value
Type
Microsoft.UI.Xaml.DependencyProperty

MinimumProperty

The DependencyProperty for Minimum property.

Declaration
public static readonly DependencyProperty MinimumProperty
Field Value
Type
Microsoft.UI.Xaml.DependencyProperty

Properties

ActualMaximum

Gets the actual maximum value of the logarithmic axis.

Declaration
public double ActualMaximum { get; }
Property Value
Type
System.Double
Examples
  <VerticalStackLayout>
    <Label Text="{Binding Source={x:Reference xAxis}, Path=ActualMaximum }" />
    <chart:SfCartesianChart>

          <chart:SfCartesianChart.XAxes>
              <chart:LogarithmicAxis x:Name="xAxis"/>
          </chart:SfCartesianChart.XAxes>

          <chart:SfCartesianChart.YAxes>
              <chart:LogarithmicAxis x:Name="yAxis"/>
          </chart:SfCartesianChart.YAxes>

          <chart:SfCartesianChart.Series>
              <chart:LineSeries   ItemsSource="{Binding Data}"
                                  XBindingPath="XValue"
                                  YBindingPath="YValue" />
          </chart:SfCartesianChart.Series>

    </chart:SfCartesianChart>
  </VerticalStackLayout>

ActualMinimum

Gets the actual minimum value of the logarithmic axis.

Declaration
public double ActualMinimum { get; }
Property Value
Type
System.Double
Examples
  <VerticalStackLayout>
    <Label Text="{Binding Source={x:Reference xAxis}, Path=ActualMinimum }" />
    <chart:SfCartesianChart>

          <chart:SfCartesianChart.XAxes>
              <chart:LogarithmicAxis x:Name="xAxis"/>
          </chart:SfCartesianChart.XAxes>

          <chart:SfCartesianChart.YAxes>
              <chart:LogarithmicAxis x:Name="yAxis"/>
          </chart:SfCartesianChart.YAxes>

          <chart:SfCartesianChart.Series>
              <chart:LineSeries   ItemsSource="{Binding Data}"
                                  XBindingPath="XValue"
                                  YBindingPath="YValue" />
          </chart:SfCartesianChart.Series>

    </chart:SfCartesianChart>
  </VerticalStackLayout>

Interval

Gets or sets the interval between labels along the logarithmic axis. If not set, the interval is automatically calculated based on the axis range and base value.

Declaration
public double Interval { get; set; }
Property Value
Type Description
System.Double

The default value is double.NaN.
Examples
<chart:SfCartesianChart>
    <chart:SfCartesianChart.XAxes>
        <chart:LogarithmicAxis Interval="2" />
    </chart:SfCartesianChart.XAxes>
</chart:SfCartesianChart>

LogarithmicBase

Gets or sets the base value for the logarithmic calculations on the axis. This defines the logarithmic scale used to display data values.

Declaration
public double LogarithmicBase { get; set; }
Property Value
Type Description
System.Double

The default value is 10.
Examples
<chart:SfCartesianChart>
    <chart:SfCartesianChart.XAxes>
        <chart:LogarithmicAxis LogarithmicBase="2" />
    </chart:SfCartesianChart.XAxes>
</chart:SfCartesianChart>

Maximum

Gets or sets the maximum value displayed on the logarithmic axis. If not set, the maximum value is calculated based on the data.

Declaration
public double Maximum { get; set; }
Property Value
Type Description
System.Double

The default value is null.
Examples
<chart:SfCartesianChart>
    <chart:SfCartesianChart.XAxes>
        <chart:LogarithmicAxis Maximum="10000" />
    </chart:SfCartesianChart.XAxes>
</chart:SfCartesianChart>

Minimum

Gets or sets the minimum value displayed on the logarithmic axis. If not set, the minimum value is calculated based on the data.

Declaration
public double Minimum { get; set; }
Property Value
Type Description
System.Double

The default value is null.
Examples
<chart:SfCartesianChart>
    <chart:SfCartesianChart.XAxes>
        <chart:LogarithmicAxis Minimum="1" />
    </chart:SfCartesianChart.XAxes>
</chart:SfCartesianChart>

Methods

CalculateActualInterval(DoubleRange, Size)

Declaration
protected override double CalculateActualInterval(DoubleRange range, Size availableSize)
Parameters
Type Name Description
DoubleRange range
Windows.Foundation.Size availableSize
Returns
Type
System.Double
Overrides

CalculateActualRange()

Declaration
protected override DoubleRange CalculateActualRange()
Returns
Type
DoubleRange
Overrides

CalculateNiceInterval(DoubleRange, Size)

Declaration
protected override double CalculateNiceInterval(DoubleRange actualRange, Size availableSize)
Parameters
Type Name Description
DoubleRange actualRange
Windows.Foundation.Size availableSize
Returns
Type
System.Double
Overrides

CalculateVisibleRange(DoubleRange, Size)

Declaration
protected override DoubleRange CalculateVisibleRange(DoubleRange actualRange, Size availableSize)
Parameters
Type Name Description
DoubleRange actualRange
Windows.Foundation.Size availableSize
Returns
Type
DoubleRange
Overrides

Implements

System.ComponentModel.INotifyPropertyChanged