ChartDirector 6.2 (.NET Edition)

Polar Spline Chart




This example demonstrates polar spline line and polar spline area.

The polar spline line is created using PolarChart.addSplineLineLayer. The polar spline area is created using PolarChart.addSplineAreaLayer.

Source Code Listing

[Windows Forms - C# version] NetWinCharts\CSharpWinCharts\polarspline.cs
using System;
using ChartDirector;

namespace CSharpChartExplorer
{
    public class polarspline : DemoModule
    {
        //Name of demo module
        public string getName() { return "Polar Spline Chart"; }

        //Number of charts produced in this demo module
        public int getNoOfCharts() { return 1; }

        //Main code for creating chart.
        //Note: the argument chartIndex is unused because this demo only has 1 chart.
        public void createChart(WinChartViewer viewer, int chartIndex)
        {
            // The data for the chart
            double[] data0 = {5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, 1.8,
                2.1, 2.3, 3.5, 7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3};
            double[] angles0 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210,
                225, 240, 255, 270, 285, 300, 315, 330, 345};

            double[] data1 = {8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, 7.1,
                8.8, 7.9, 2.2, 5.0, 4.0, 1.5, 7.5, 8.3, 9.0};
            double[] angles1 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210,
                225, 240, 255, 270, 285, 300, 315, 330, 345};

            // Create a PolarChart object of size 460 x 460 pixels
            PolarChart c = new PolarChart(460, 460);

            // Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
            c.addTitle2(Chart.TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15);

            // Set center of plot area at (230, 240) with radius 180 pixels
            c.setPlotArea(230, 240, 180);

            // Set the grid style to circular grid
            c.setGridStyle(false);

            // Add a legend box at the top right corner of the chart using 9pt Arial Bold font
            c.addLegend(459, 0, true, "Arial Bold", 9).setAlignment(Chart.TopRight);

            // Set angular axis as 0 - 360, with a spoke every 30 units
            c.angularAxis().setLinearScale(0, 360, 30);

            // Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
            c.addSplineAreaLayer(data0, 0xff9999, "Above 100MHz").setAngles(angles0);

            // Add a blue (0xff) spline line layer to the chart using (data1, angle1)
            PolarSplineLineLayer layer1 = c.addSplineLineLayer(data1, 0x0000ff, "Below 100MHz");
            layer1.setAngles(angles1);

            // Set the line width to 3 pixels
            layer1.setLineWidth(3);

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='{dataSetName} EM field at {angle} deg: {value} Watt'");
        }
    }
}

[Windows Forms - VB Version] NetWinCharts\VBNetWinCharts\polarspline.vb
Imports System
Imports Microsoft.VisualBasic
Imports ChartDirector

Public Class polarspline
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Polar Spline Chart"
    End Function

    'Number of charts produced in this demo module
    Public Function getNoOfCharts() As Integer Implements DemoModule.getNoOfCharts
        Return 1
    End Function

    'Main code for creating chart.
    'Note: the argument chartIndex is unused because this demo only has 1 chart.
    Public Sub createChart(viewer As WinChartViewer, chartIndex As Integer) _
        Implements DemoModule.createChart

        ' The data for the chart
        Dim data0() As Double = {5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, _
            1.8, 2.1, 2.3, 3.5, 7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3}
        Dim angles0() As Double = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, _
            210, 225, 240, 255, 270, 285, 300, 315, 330, 345}

        Dim data1() As Double = {8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, _
            7.1, 8.8, 7.9, 2.2, 5.0, 4.0, 1.5, 7.5, 8.3, 9.0}
        Dim angles1() As Double = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, _
            210, 225, 240, 255, 270, 285, 300, 315, 330, 345}

        ' Create a PolarChart object of size 460 x 460 pixels
        Dim c As PolarChart = New PolarChart(460, 460)

        ' Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
        c.addTitle2(Chart.TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15)

        ' Set center of plot area at (230, 240) with radius 180 pixels
        c.setPlotArea(230, 240, 180)

        ' Set the grid style to circular grid
        c.setGridStyle(False)

        ' Add a legend box at the top right corner of the chart using 9pt Arial Bold font
        c.addLegend(459, 0, True, "Arial Bold", 9).setAlignment(Chart.TopRight)

        ' Set angular axis as 0 - 360, with a spoke every 30 units
        c.angularAxis().setLinearScale(0, 360, 30)

        ' Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
        c.addSplineAreaLayer(data0, &Hff9999, "Above 100MHz").setAngles(angles0)

        ' Add a blue (0xff) spline line layer to the chart using (data1, angle1)
        Dim layer1 As PolarSplineLineLayer = c.addSplineLineLayer(data1, &H0000ff, "Below 100MHz")
        layer1.setAngles(angles1)

        ' Set the line width to 3 pixels
        layer1.setLineWidth(3)

        ' Output the chart
        viewer.Chart = c

        'include tool tip for the chart
        viewer.ImageMap = c.getHTMLImageMap("clickable", "", _
            "title='{dataSetName} EM field at {angle} deg: {value} Watt'")

    End Sub

End Class

[WPF - C#] NetWPFCharts\polarspline.cs
using System;
using ChartDirector;

namespace CSharpWPFDemo
{
    public class polarspline : DemoModule
    {
        //Name of demo module
        public string getName() { return "Polar Spline Chart"; }

        //Number of charts produced in this demo module
        public int getNoOfCharts() { return 1; }

        //Main code for creating chart.
        //Note: the argument chartIndex is unused because this demo only has 1 chart.
        public void createChart(WPFChartViewer viewer, int chartIndex)
        {
            // The data for the chart
            double[] data0 = {5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, 1.8,
                2.1, 2.3, 3.5, 7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3};
            double[] angles0 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210,
                225, 240, 255, 270, 285, 300, 315, 330, 345};

            double[] data1 = {8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, 7.1,
                8.8, 7.9, 2.2, 5.0, 4.0, 1.5, 7.5, 8.3, 9.0};
            double[] angles1 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210,
                225, 240, 255, 270, 285, 300, 315, 330, 345};

            // Create a PolarChart object of size 460 x 460 pixels
            PolarChart c = new PolarChart(460, 460);

            // Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
            c.addTitle2(Chart.TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15);

            // Set center of plot area at (230, 240) with radius 180 pixels
            c.setPlotArea(230, 240, 180);

            // Set the grid style to circular grid
            c.setGridStyle(false);

            // Add a legend box at the top right corner of the chart using 9pt Arial Bold font
            c.addLegend(459, 0, true, "Arial Bold", 9).setAlignment(Chart.TopRight);

            // Set angular axis as 0 - 360, with a spoke every 30 units
            c.angularAxis().setLinearScale(0, 360, 30);

            // Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
            c.addSplineAreaLayer(data0, 0xff9999, "Above 100MHz").setAngles(angles0);

            // Add a blue (0xff) spline line layer to the chart using (data1, angle1)
            PolarSplineLineLayer layer1 = c.addSplineLineLayer(data1, 0x0000ff, "Below 100MHz");
            layer1.setAngles(angles1);

            // Set the line width to 3 pixels
            layer1.setLineWidth(3);

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='{dataSetName} EM field at {angle} deg: {value} Watt'");
        }
    }
}

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\polarspline.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="C#" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>

<!DOCTYPE html>

<script runat="server">

//
// Page Load event handler
//
protected void Page_Load(object sender, EventArgs e)
{
    // The data for the chart
    double[] data0 = {5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, 1.8, 2.1,
        2.3, 3.5, 7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3};
    double[] angles0 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240,
        255, 270, 285, 300, 315, 330, 345};

    double[] data1 = {8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, 7.1, 8.8,
        7.9, 2.2, 5.0, 4.0, 1.5, 7.5, 8.3, 9.0};
    double[] angles1 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240,
        255, 270, 285, 300, 315, 330, 345};

    // Create a PolarChart object of size 460 x 460 pixels
    PolarChart c = new PolarChart(460, 460);

    // Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
    c.addTitle2(Chart.TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15);

    // Set center of plot area at (230, 240) with radius 180 pixels
    c.setPlotArea(230, 240, 180);

    // Set the grid style to circular grid
    c.setGridStyle(false);

    // Add a legend box at the top right corner of the chart using 9pt Arial Bold font
    c.addLegend(459, 0, true, "Arial Bold", 9).setAlignment(Chart.TopRight);

    // Set angular axis as 0 - 360, with a spoke every 30 units
    c.angularAxis().setLinearScale(0, 360, 30);

    // Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
    c.addSplineAreaLayer(data0, 0xff9999, "Above 100MHz").setAngles(angles0);

    // Add a blue (0xff) spline line layer to the chart using (data1, angle1)
    PolarSplineLineLayer layer1 = c.addSplineLineLayer(data1, 0x0000ff, "Below 100MHz");
    layer1.setAngles(angles1);

    // Set the line width to 3 pixels
    layer1.setLineWidth(3);

    // Output the chart
    WebChartViewer1.Image = c.makeWebImage(Chart.PNG);

    // Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "",
        "title='{dataSetName} EM field at {angle} deg: {value} Watt'");
}

</script>

<html>
<body>
    <chart:WebChartViewer id="WebChartViewer1" runat="server" />
</body>
</html>

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\polarspline.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="VB" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>

<!DOCTYPE html>

<script runat="server">

'
' Page Load event handler
'
Protected Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)

    ' The data for the chart
    Dim data0() As Double = {5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, 1.8, _
        2.1, 2.3, 3.5, 7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3}
    Dim angles0() As Double = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, _
        225, 240, 255, 270, 285, 300, 315, 330, 345}

    Dim data1() As Double = {8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, _
        7.1, 8.8, 7.9, 2.2, 5.0, 4.0, 1.5, 7.5, 8.3, 9.0}
    Dim angles1() As Double = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, _
        225, 240, 255, 270, 285, 300, 315, 330, 345}

    ' Create a PolarChart object of size 460 x 460 pixels
    Dim c As PolarChart = New PolarChart(460, 460)

    ' Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
    c.addTitle2(Chart.TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15)

    ' Set center of plot area at (230, 240) with radius 180 pixels
    c.setPlotArea(230, 240, 180)

    ' Set the grid style to circular grid
    c.setGridStyle(False)

    ' Add a legend box at the top right corner of the chart using 9pt Arial Bold font
    c.addLegend(459, 0, True, "Arial Bold", 9).setAlignment(Chart.TopRight)

    ' Set angular axis as 0 - 360, with a spoke every 30 units
    c.angularAxis().setLinearScale(0, 360, 30)

    ' Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
    c.addSplineAreaLayer(data0, &Hff9999, "Above 100MHz").setAngles(angles0)

    ' Add a blue (0xff) spline line layer to the chart using (data1, angle1)
    Dim layer1 As PolarSplineLineLayer = c.addSplineLineLayer(data1, &H0000ff, "Below 100MHz")
    layer1.setAngles(angles1)

    ' Set the line width to 3 pixels
    layer1.setLineWidth(3)

    ' Output the chart
    WebChartViewer1.Image = c.makeWebImage(Chart.PNG)

    ' Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _
        "title='{dataSetName} EM field at {angle} deg: {value} Watt'")

End Sub

</script>

<html>
<body>
    <chart:WebChartViewer id="WebChartViewer1" runat="server" />
</body>
</html>

[ASP.NET MVC - Controller] NetMvcCharts\Controllers\PolarsplineController.cs
using System;
using System.Web.Mvc;
using ChartDirector;

namespace NetMvcCharts.Controllers
{
    public class PolarsplineController : Controller
    {
        //
        // Default Action
        //
        public ActionResult Index()
        {
            ViewBag.Title = "Polar Spline Chart";
            createChart(ViewBag.Viewer = new RazorChartViewer(HttpContext, "chart1"));
            return View("~/Views/Shared/ChartView.cshtml");
        }

        //
        // Create chart
        //
        private void createChart(RazorChartViewer viewer)
        {
            // The data for the chart
            double[] data0 = {5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, 1.8, 2.1,
                2.3, 3.5, 7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3};
            double[] angles0 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225,
                240, 255, 270, 285, 300, 315, 330, 345};

            double[] data1 = {8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, 7.1, 8.8,
                7.9, 2.2, 5.0, 4.0, 1.5, 7.5, 8.3, 9.0};
            double[] angles1 = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225,
                240, 255, 270, 285, 300, 315, 330, 345};

            // Create a PolarChart object of size 460 x 460 pixels
            PolarChart c = new PolarChart(460, 460);

            // Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
            c.addTitle2(Chart.TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15);

            // Set center of plot area at (230, 240) with radius 180 pixels
            c.setPlotArea(230, 240, 180);

            // Set the grid style to circular grid
            c.setGridStyle(false);

            // Add a legend box at the top right corner of the chart using 9pt Arial Bold font
            c.addLegend(459, 0, true, "Arial Bold", 9).setAlignment(Chart.TopRight);

            // Set angular axis as 0 - 360, with a spoke every 30 units
            c.angularAxis().setLinearScale(0, 360, 30);

            // Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
            c.addSplineAreaLayer(data0, 0xff9999, "Above 100MHz").setAngles(angles0);

            // Add a blue (0xff) spline line layer to the chart using (data1, angle1)
            PolarSplineLineLayer layer1 = c.addSplineLineLayer(data1, 0x0000ff, "Below 100MHz");
            layer1.setAngles(angles1);

            // Set the line width to 3 pixels
            layer1.setLineWidth(3);

            // Output the chart
            viewer.Image = c.makeWebImage(Chart.PNG);

            // Include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("", "",
                "title='{dataSetName} EM field at {angle} deg: {value} Watt'");
        }
    }
}

[ASP.NET MVC - View] NetMvcCharts\Views\Shared\ChartView.cshtml
@{ Layout = null; }

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>@ViewBag.Title</title>
</head>
<body style="margin:5px 0px 0px 5px">
    <div style="font:bold 18pt verdana;">
        @ViewBag.Title
    </div>
    <hr style="border:solid 1px #000080" />
    <div>
        @{
            if (ViewBag.Viewer is Array)
            {
                // Display multiple charts
                for (int i = 0; i < ViewBag.Viewer.Length; ++i)
                {
                    @:@Html.Raw(ViewBag.Viewer[i].RenderHTML())
                }
            }
            else
            {
                // Display one chart only
                @:@Html.Raw(ViewBag.Viewer.RenderHTML())
            }
        }
    </div>
</body>
</html>