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Polar Chart

To render a polar series, use seriesType as Polar.

Draw Types

Polar DrawType property is used to change the series plotting type to line, column, area, range column, spline, scatter, stacking area and stacking column. The default value of DrawType is Line.

Line

To render a line draw type, use series DrawType as Line. IsClosed property specifies whether to join start and end point of a line series used in polar chart to form a closed path. Default value of isClosed is true.

polar-line.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesReports" XName="X" Width="2" Opacity="1" YName="Y"
                     Type="ChartSeriesType.Polar" DrawType="ChartDrawType.Line">
            <ChartMarker Height="10" Width="10" Visible="true" Shape="ChartShape.Pentagon"></ChartMarker>
        </ChartSeries>
    </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
    }

    public List<ChartData> SalesReports = new List<ChartData>
    {
        new ChartData{ X= 2005, Y= 28 },
        new ChartData{ X= 2006, Y= 25 },
        new ChartData{ X= 2007, Y= 26 },
        new ChartData{ X= 2008, Y= 27 },
        new ChartData{ X= 2009, Y= 32 },
        new ChartData{ X= 2010, Y= 35 },
        new ChartData{ X= 2011, Y= 30 }
    };
}

Line

Spline

To render a spline line draw type, use series DrawType as Spline.

polar-spline.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesReports" XName="X" Width="2" Opacity="1" YName="Y"
                        Type="ChartSeriesType.Polar" DrawType="ChartDrawType.Spline">
            <ChartMarker Height="10" Width="10" Visible="true" Shape="ChartShape.Pentagon"></ChartMarker>
        </ChartSeries>
    </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
    }

    public List<ChartData> SalesReports = new List<ChartData>
    {
        new ChartData{ X= 2005, Y= 28 },
        new ChartData{ X= 2006, Y= 25 },
        new ChartData{ X= 2007, Y= 26 },
        new ChartData{ X= 2008, Y= 27 },
        new ChartData{ X= 2009, Y= 32 },
        new ChartData{ X= 2010, Y= 35 },
        new ChartData{ X= 2011, Y= 30 }
    };
}

Spline

Area

To render a area series, use DrawType as Area.

polar-area.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
        <ChartSeriesCollection>
            <ChartSeries DataSource="@SalesReports" XName="X" Width="2" Opacity="1" YName="Y"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.Area">
                <ChartMarker Height="10" Width="10" Visible="true" Shape="ChartShape.Pentagon"></ChartMarker>
            </ChartSeries>
        </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
    }

    public List<ChartData> SalesReports = new List<ChartData>
    {
        new ChartData{ X= 2005, Y= 28 },
        new ChartData{ X= 2006, Y= 25 },
        new ChartData{ X= 2007, Y= 26 },
        new ChartData{ X= 2008, Y= 27 },
        new ChartData{ X= 2009, Y= 32 },
        new ChartData{ X= 2010, Y= 35 },
        new ChartData{ X= 2011, Y= 30 }
    };
}

Area

Stacked Area

To render a stacked area, use DrawType as StackingArea.

polar-stackedarea.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
        <ChartSeriesCollection>
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.StackingArea">
                <ChartMarker Height="10" Width="10" Visible="true" Shape="ChartShape.Pentagon"></ChartMarker>
            </ChartSeries>
          
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y1"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.StackingArea">
                <ChartMarker Height="10" Width="10" Visible="true" Shape="ChartShape.Pentagon"></ChartMarker>
            </ChartSeries>
          
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y2"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.StackingArea">
                <ChartMarker Height="10" Width="10" Visible="true" Shape="ChartShape.Pentagon"></ChartMarker>
            </ChartSeries>
        </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
        public double Y1;
        public double Y2;
    }

    public List<ChartData> SalesReports = new List<ChartData> 
    {
          new ChartData{ X=2000, Y= 0.61, Y1= 0.03, Y2= 0.48},
          new ChartData{ X=2001, Y= 0.81, Y1= 0.05, Y2= 0.53 },
          new ChartData{ X=2002, Y= 0.91, Y1= 0.06, Y2= 0.57 },
          new ChartData{ X=2003, Y= 1, Y1= 0.09, Y2= 0.61 },
          new ChartData{ X=2004, Y= 1.19, Y1= 0.14, Y2= 0.63 },
          new ChartData{ X=2005, Y= 1.47, Y1= 0.20, Y2= 0.64 },
          new ChartData{ X=2006, Y= 1.74, Y1= 0.29, Y2= 0.66 },
          new ChartData{ X=2007, Y= 1.98, Y1= 0.46, Y2= 0.76 },
          new ChartData{ X=2008, Y= 1.99, Y1= 0.64, Y2= 0.77 },
          new ChartData{ X=2009, Y= 1.70, Y1= 0.75, Y2= 0.55 }
    };
}

Stacked Area

Column

To render a column draw type, use series DrawType as Column.

polar-column.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
        <ChartSeriesCollection>
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.Column">
                <ChartMarker Height="10" Width="10" Visible="true" Shape="ChartShape.Pentagon"></ChartMarker>
            </ChartSeries>
        </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
    }

    public List<ChartData> SalesReports = new List<ChartData>
    {
        new ChartData{ X= 2005, Y= 28 },
        new ChartData{ X= 2006, Y= 25 },
        new ChartData{ X= 2007, Y= 26 },
        new ChartData{ X= 2008, Y= 27 },
        new ChartData{ X= 2009, Y= 32 },
        new ChartData{ X= 2010, Y= 35 },
        new ChartData{ X= 2011, Y= 30 }
    };
}

Column

Stacked Column

To render a stacked column draw type, use series DrawType as StackingColumn.

polar-stackedcolumn.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
        <ChartSeriesCollection>
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.StackingColumn">
            </ChartSeries>
          
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y1"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.StackingColumn">
            </ChartSeries>
          
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y2"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.StackingColumn">
            </ChartSeries>
        </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
        public double Y1;
        public double Y2;
    }

    public List<ChartData> SalesReports = new List<ChartData> 
    {
          new ChartData{ X=2000, Y= 0.61, Y1= 0.03, Y2= 0.48},
          new ChartData{ X=2001, Y= 0.81, Y1= 0.05, Y2= 0.53 },
          new ChartData{ X=2002, Y= 0.91, Y1= 0.06, Y2= 0.57 },
          new ChartData{ X=2003, Y= 1, Y1= 0.09, Y2= 0.61 },
          new ChartData{ X=2004, Y= 1.19, Y1= 0.14, Y2= 0.63 },
          new ChartData{ X=2005, Y= 1.47, Y1= 0.20, Y2= 0.64 },
          new ChartData{ X=2006, Y= 1.74, Y1= 0.29, Y2= 0.66 },
          new ChartData{ X=2007, Y= 1.98, Y1= 0.46, Y2= 0.76 },
          new ChartData{ X=2008, Y= 1.99, Y1= 0.64, Y2= 0.77 },
          new ChartData{ X=2009, Y= 1.70, Y1= 0.75, Y2= 0.55 }
    };
}

Stacked Column

Range Column

To render a range column draw type, use series DrawType as RangeColumn.

polar-rangecolumn.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
        <ChartPrimaryXAxis ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category">
        </ChartPrimaryXAxis>
  
        <ChartSeriesCollection>
            <ChartSeries DataSource="@WeatherReports" XName="X" High="High" Low="Low"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.RangeColumn">
            </ChartSeries>
        </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public string X;
        public double Low;
        public double High;
    }

    public List<ChartData> WeatherReports = new List<ChartData> 
    {
          new ChartData{ X="Jan", Low= 0.7, High= 6.1 },
          new ChartData{ X="Feb", Low=1.3, High=6.3 },
          new ChartData{ X="Mar", Low= 1.9, High= 8.5 },
          new ChartData{ X= "Apr", Low= 3.1, High= 10.8 },
          new ChartData{ X="May", Low= 5.7, High= 14.40 },
          new ChartData { X= "Jun", Low= 8.4, High= 16.90 },
          new ChartData { X= "Jul", Low= 10.6,High= 19.20 },
          new ChartData { X= "Aug", Low= 10.5,High= 18.9 },
          new ChartData { X= "Sep", Low= 8.5, High= 16.1 },
          new ChartData { X= "Oct", Low= 6.0, High= 12.5 },
          new ChartData { X= "Nov", Low= 1.5, High= 6.9  },
          new ChartData { X= "Dec", Low= 5.1, High= 12.1 }
    };
}

Range Column

Scatter

To render a scatter draw type, use series DrawType as Scatter.

polar-scatter.razor
@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
        <ChartPrimaryXAxis ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category">
        </ChartPrimaryXAxis>
  
        <ChartSeriesCollection>
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.Scatter">
            </ChartSeries>
        </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
    }

    public List<ChartData> SalesReports = new List<ChartData>
    {
        new ChartData{ X= 2005, Y= 28 },
        new ChartData{ X= 2006, Y= 25 },
        new ChartData{ X= 2007, Y= 26 },
        new ChartData{ X= 2008, Y= 27 },
        new ChartData{ X= 2009, Y= 32 },
        new ChartData{ X= 2010, Y= 35 },
        new ChartData{ X= 2011, Y= 30 }
    };
}

Scatter

Customization

Start Angle

You can customize the start angle of the polar series using StartAngle property. By default, StartAngle is 0 degree.

@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
    <ChartPrimaryXAxis StartAngle="270" ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category">
    </ChartPrimaryXAxis>

    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesReports" XName="X" YName="Y" Type="ChartSeriesType.Polar" DrawType="ChartDrawType.Line">
        </ChartSeries>
    </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
    }

    public List<ChartData> SalesReports = new List<ChartData>
    {
        new ChartData{ X= 2005, Y= 28 },
        new ChartData{ X= 2006, Y= 25 },
        new ChartData{ X= 2007, Y= 26 },
        new ChartData{ X= 2008, Y= 27 },
        new ChartData{ X= 2009, Y= 32 },
        new ChartData{ X= 2010, Y= 35 },
        new ChartData{ X= 2011, Y= 30 }
    };
}

Start Angle

Coefficient in axis

You can customize the radius of the polar series using Coefficient property. By default, Coefficient is 100.

@using Syncfusion.EJ2.Blazor.Charts

<EjsChart Width="60%">
        <ChartPrimaryXAxis Coefficient="40" ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category">
        </ChartPrimaryXAxis>

        <ChartSeriesCollection>
            <ChartSeries DataSource="@SalesReports" XName="X" YName="Y"
                         Type="ChartSeriesType.Polar" DrawType="ChartDrawType.Line">
            </ChartSeries>
        </ChartSeriesCollection>
</EjsChart>

@code{
    public class ChartData
    {
        public double X;
        public double Y;
    }

    public List<ChartData> SalesReports = new List<ChartData>
    {
        new ChartData{ X= 2005, Y= 28 },
        new ChartData{ X= 2006, Y= 25 },
        new ChartData{ X= 2007, Y= 26 },
        new ChartData{ X= 2008, Y= 27 },
        new ChartData{ X= 2009, Y= 32 },
        new ChartData{ X= 2010, Y= 35 },
        new ChartData{ X= 2011, Y= 30 }
    };
}

Coefficient

See Also