ChartDirector 6.2 (.NET Edition)

Custom Scatter Symbols




This example demonstrates using external image files as scatter symbols.

The chart in this example is created as 5 scatter layers using XYChart.addScatterLayer, with each layer containing one point.

The symbols for the scatter layers come from external image files. They are loaded using DataSet.setDataSymbol2.

Source Code Listing

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

namespace CSharpChartExplorer
{
    public class scattersymbols : DemoModule
    {
        //Name of demo module
        public string getName() { return "Custom Scatter Symbols"; }

        //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 XY points for the scatter chart
            double[] dataX = {200, 400, 300, 250, 500};
            double[] dataY = {40, 100, 50, 150, 250};

            // The custom symbols for the points
            string[] symbols = {"robot1.png", "robot2.png", "robot3.png", "robot4.png", "robot5.png"
                };

            // Create a XYChart object of size 450 x 400 pixels
            XYChart c = new XYChart(450, 400);

            // Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey border
            // (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
            // (0xc0c0c0)
            c.setPlotArea(55, 40, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

            // Add a title to the chart using 18pt Times Bold Itatic font.
            c.addTitle("Battle Robots", "Times New Roman Bold Italic", 18);

            // Add a title to the y axis using 12pt Arial Bold Italic font
            c.yAxis().setTitle("Speed (km/s)", "Arial Bold Italic", 12);

            // Add a title to the y axis using 12pt Arial Bold Italic font
            c.xAxis().setTitle("Range (km)", "Arial Bold Italic", 12);

            // Set the axes line width to 3 pixels
            c.xAxis().setWidth(3);
            c.yAxis().setWidth(3);

            // Add each point of the data as a separate scatter layer, so that they can have a
            // different symbol
            for(int i = 0; i < dataX.Length; ++i) {
                c.addScatterLayer(new double[] {dataX[i]}, new double[] {dataY[i]}).getDataSet(0
                    ).setDataSymbol2(symbols[i]);
            }

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='Range = {x} km, Speed = {value} km/s'");
        }
    }
}

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

Public Class scattersymbols
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Custom Scatter Symbols"
    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 XY points for the scatter chart
        Dim dataX() As Double = {200, 400, 300, 250, 500}
        Dim dataY() As Double = {40, 100, 50, 150, 250}

        ' The custom symbols for the points
        Dim symbols() As String = {"robot1.png", "robot2.png", "robot3.png", "robot4.png", _
            "robot5.png"}

        ' Create a XYChart object of size 450 x 400 pixels
        Dim c As XYChart = New XYChart(450, 400)

        ' Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey border
        ' (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
        ' (0xc0c0c0)
        c.setPlotArea(55, 40, 350, 300, -1, -1, &Hc0c0c0, &Hc0c0c0, -1)

        ' Add a title to the chart using 18pt Times Bold Itatic font.
        c.addTitle("Battle Robots", "Times New Roman Bold Italic", 18)

        ' Add a title to the y axis using 12pt Arial Bold Italic font
        c.yAxis().setTitle("Speed (km/s)", "Arial Bold Italic", 12)

        ' Add a title to the y axis using 12pt Arial Bold Italic font
        c.xAxis().setTitle("Range (km)", "Arial Bold Italic", 12)

        ' Set the axes line width to 3 pixels
        c.xAxis().setWidth(3)
        c.yAxis().setWidth(3)

        ' Add each point of the data as a separate scatter layer, so that they can have a different
        ' symbol
        For i As Integer = 0 To UBound(dataX)
            c.addScatterLayer(New Double() {dataX(i)}, New Double() {dataY(i)}).getDataSet(0 _
                ).setDataSymbol2(symbols(i))
        Next

        ' Output the chart
        viewer.Chart = c

        'include tool tip for the chart
        viewer.ImageMap = c.getHTMLImageMap("clickable", "", _
            "title='Range = {x} km, Speed = {value} km/s'")

    End Sub

End Class

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

namespace CSharpWPFDemo
{
    public class scattersymbols : DemoModule
    {
        //Name of demo module
        public string getName() { return "Custom Scatter Symbols"; }

        //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 XY points for the scatter chart
            double[] dataX = {200, 400, 300, 250, 500};
            double[] dataY = {40, 100, 50, 150, 250};

            // The custom symbols for the points
            string[] symbols = {"robot1.png", "robot2.png", "robot3.png", "robot4.png", "robot5.png"
                };

            // Create a XYChart object of size 450 x 400 pixels
            XYChart c = new XYChart(450, 400);

            // Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey border
            // (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
            // (0xc0c0c0)
            c.setPlotArea(55, 40, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

            // Add a title to the chart using 18pt Times Bold Itatic font.
            c.addTitle("Battle Robots", "Times New Roman Bold Italic", 18);

            // Add a title to the y axis using 12pt Arial Bold Italic font
            c.yAxis().setTitle("Speed (km/s)", "Arial Bold Italic", 12);

            // Add a title to the y axis using 12pt Arial Bold Italic font
            c.xAxis().setTitle("Range (km)", "Arial Bold Italic", 12);

            // Set the axes line width to 3 pixels
            c.xAxis().setWidth(3);
            c.yAxis().setWidth(3);

            // Add each point of the data as a separate scatter layer, so that they can have a
            // different symbol
            for(int i = 0; i < dataX.Length; ++i) {
                c.addScatterLayer(new double[] {dataX[i]}, new double[] {dataY[i]}).getDataSet(0
                    ).setDataSymbol2(symbols[i]);
            }

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='Range = {x} km, Speed = {value} km/s'");
        }
    }
}

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\scattersymbols.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 XY points for the scatter chart
    double[] dataX = {200, 400, 300, 250, 500};
    double[] dataY = {40, 100, 50, 150, 250};

    // The custom symbols for the points
    string[] symbols = {"robot1.png", "robot2.png", "robot3.png", "robot4.png", "robot5.png"};

    // Create a XYChart object of size 450 x 400 pixels
    XYChart c = new XYChart(450, 400);

    // Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey border
    // (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color (0xc0c0c0)
    c.setPlotArea(55, 40, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

    // Add a title to the chart using 18pt Times Bold Itatic font.
    c.addTitle("Battle Robots", "Times New Roman Bold Italic", 18);

    // Add a title to the y axis using 12pt Arial Bold Italic font
    c.yAxis().setTitle("Speed (km/s)", "Arial Bold Italic", 12);

    // Add a title to the y axis using 12pt Arial Bold Italic font
    c.xAxis().setTitle("Range (km)", "Arial Bold Italic", 12);

    // Set the axes line width to 3 pixels
    c.xAxis().setWidth(3);
    c.yAxis().setWidth(3);

    // Add each point of the data as a separate scatter layer, so that they can have a different
    // symbol
    for(int i = 0; i < dataX.Length; ++i) {
        c.addScatterLayer(new double[] {dataX[i]}, new double[] {dataY[i]}).getDataSet(0
            ).setDataSymbol2(Server.MapPath(symbols[i]));
    }

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

    // Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "",
        "title='Range = {x} km, Speed = {value} km/s'");
}

</script>

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

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\scattersymbols.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 XY points for the scatter chart
    Dim dataX() As Double = {200, 400, 300, 250, 500}
    Dim dataY() As Double = {40, 100, 50, 150, 250}

    ' The custom symbols for the points
    Dim symbols() As String = {"robot1.png", "robot2.png", "robot3.png", "robot4.png", _
        "robot5.png"}

    ' Create a XYChart object of size 450 x 400 pixels
    Dim c As XYChart = New XYChart(450, 400)

    ' Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey border
    ' (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color (0xc0c0c0)
    c.setPlotArea(55, 40, 350, 300, -1, -1, &Hc0c0c0, &Hc0c0c0, -1)

    ' Add a title to the chart using 18pt Times Bold Itatic font.
    c.addTitle("Battle Robots", "Times New Roman Bold Italic", 18)

    ' Add a title to the y axis using 12pt Arial Bold Italic font
    c.yAxis().setTitle("Speed (km/s)", "Arial Bold Italic", 12)

    ' Add a title to the y axis using 12pt Arial Bold Italic font
    c.xAxis().setTitle("Range (km)", "Arial Bold Italic", 12)

    ' Set the axes line width to 3 pixels
    c.xAxis().setWidth(3)
    c.yAxis().setWidth(3)

    ' Add each point of the data as a separate scatter layer, so that they can have a different
    ' symbol
    For i As Integer = 0 To UBound(dataX)
        c.addScatterLayer(New Double() {dataX(i)}, New Double() {dataY(i)}).getDataSet(0 _
            ).setDataSymbol2(Server.MapPath(symbols(i)))
    Next

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

    ' Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _
        "title='Range = {x} km, Speed = {value} km/s'")

End Sub

</script>

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

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

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

        //
        // Create chart
        //
        private void createChart(RazorChartViewer viewer)
        {
            // The XY points for the scatter chart
            double[] dataX = {200, 400, 300, 250, 500};
            double[] dataY = {40, 100, 50, 150, 250};

            // The custom symbols for the points
            string[] symbols = {"robot1.png", "robot2.png", "robot3.png", "robot4.png", "robot5.png"};

            // Create a XYChart object of size 450 x 400 pixels
            XYChart c = new XYChart(450, 400);

            // Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey border
            // (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
            // (0xc0c0c0)
            c.setPlotArea(55, 40, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

            // Add a title to the chart using 18pt Times Bold Itatic font.
            c.addTitle("Battle Robots", "Times New Roman Bold Italic", 18);

            // Add a title to the y axis using 12pt Arial Bold Italic font
            c.yAxis().setTitle("Speed (km/s)", "Arial Bold Italic", 12);

            // Add a title to the y axis using 12pt Arial Bold Italic font
            c.xAxis().setTitle("Range (km)", "Arial Bold Italic", 12);

            // Set the axes line width to 3 pixels
            c.xAxis().setWidth(3);
            c.yAxis().setWidth(3);

            // Add each point of the data as a separate scatter layer, so that they can have a different
            // symbol
            for(int i = 0; i < dataX.Length; ++i) {
                c.addScatterLayer(new double[] {dataX[i]}, new double[] {dataY[i]}).getDataSet(0
                    ).setDataSymbol2(Url.Content("~/Content/" + symbols[i]));
            }

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

            // Include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("", "", "title='Range = {x} km, Speed = {value} km/s'");
        }
    }
}

[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>