ChartDirector 5.1 (.NET Edition)

Bubble XY Scaling



This example demonstrates a bubble chart with independent x and y bubble sizes and non-circular bubbles.

In ChartDirector, a bubble chart in general is a scatter layer with the symbol sizes controlled by some other data series.

ChartDirector supports using arbitrary symbols as bubbles. Thus bubble shape is not limited to circle but can be any shapes.

Furthermore, ChartDirector supports independent x and y sizes for bubbles. This is useful for creating charts in which the bubbles reflect some features of the data points, such as its confidence zone, x and y errors, x and y standard deviations, etc.

Source Code Listing

[ASP.NET - VB Version] NetWebCharts\VBNetASP\bubblescale.aspx
(Click here on how to convert this code to Visual Studio code-behind style.) 
<%@ Page Language="VB" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>
<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 bubble chart. The bubble chart has independent bubble
    ' size on the X and Y direction.
    Dim dataX0() As Double = {1000, 1500, 1700}
    Dim dataY0() As Double = {25, 20, 65}
    Dim dataZX0() As Double = {500, 200, 600}
    Dim dataZY0() As Double = {15, 30, 20}

    Dim dataX1() As Double = {500, 1000, 1300}
    Dim dataY1() As Double = {35, 50, 75}
    Dim dataZX1() As Double = {800, 300, 500}
    Dim dataZY1() As Double = {8, 27, 25}

    Dim dataX2() As Double = {150, 300}
    Dim dataY2() As Double = {20, 60}
    Dim dataZX2() As Double = {160, 400}
    Dim dataZY2() As Double = {30, 20}

    ' Create a XYChart object of size 450 x 420 pixels
    Dim c As XYChart = New XYChart(450, 420)

    ' Set the plotarea at (55, 65) 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, 65, 350, 300, -1, -1, &Hc0c0c0, &Hc0c0c0, -1)

    ' Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12
    ' pts Times Bold Italic font. Set the background and border color to Transparent.
    c.addLegend(50, 30, False, "Times New Roman Bold Italic", 12).setBackground( _
        Chart.Transparent)

    ' Add a title to the chart using 18 pts Times Bold Itatic font.
    c.addTitle("Plasma Battery Comparison", "Times New Roman Bold Italic", 18)

    ' Add titles to the axes using 12 pts Arial Bold Italic font
    c.yAxis().setTitle("Operating Current", "Arial Bold Italic", 12)
    c.xAxis().setTitle("Operating Voltage", "Arial Bold Italic", 12)

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

    ' Add (dataX0, dataY0) as a standard scatter layer, and also as a "bubble"
    ' scatter layer, using circles as symbols. The "bubble" scatter layer has symbol
    ' size modulated by (dataZX0, dataZY0) using the scale on the x and y axes.
    c.addScatterLayer(dataX0, dataY0, "Vendor A", Chart.CircleSymbol, 9, &Hff3333, _
        &Hff3333)
    c.addScatterLayer(dataX0, dataY0, "", Chart.CircleSymbol, 9, &H80ff3333, _
        &H80ff3333).setSymbolScale(dataZX0, Chart.XAxisScale, dataZY0, _
        Chart.YAxisScale)

    ' Add (dataX1, dataY1) as a standard scatter layer, and also as a "bubble"
    ' scatter layer, using squares as symbols. The "bubble" scatter layer has symbol
    ' size modulated by (dataZX1, dataZY1) using the scale on the x and y axes.
    c.addScatterLayer(dataX1, dataY1, "Vendor B", Chart.SquareSymbol, 7, &H3333ff, _
        &H3333ff)
    c.addScatterLayer(dataX1, dataY1, "", Chart.SquareSymbol, 9, &H803333ff, _
        &H803333ff).setSymbolScale(dataZX1, Chart.XAxisScale, dataZY1, _
        Chart.YAxisScale)

    ' Add (dataX2, dataY2) as a standard scatter layer, and also as a "bubble"
    ' scatter layer, using diamonds as symbols. The "bubble" scatter layer has symbol
    ' size modulated by (dataZX2, dataZY2) using the scale on the x and y axes.
    c.addScatterLayer(dataX2, dataY2, "Vendor C", Chart.DiamondSymbol, 9, &H00ff00, _
        &H00ff00)
    c.addScatterLayer(dataX2, dataY2, "", Chart.DiamondSymbol, 9, &H8033ff33, _
        &H8033ff33).setSymbolScale(dataZX2, Chart.XAxisScale, dataZY2, _
        Chart.YAxisScale)

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

    ' Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _
        "title='Voltage = {x} +/- {={zx}/2} V, Current = {value} +/- {={zy}/2} A'")

End Sub

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

[ASP.NET - C# Version] NetWebCharts\CSharpASP\bubblescale.aspx
(Click here on how to convert this code to Visual Studio code-behind style.) 
<%@ Page Language="C#" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>
<script runat="server">

//
// Page Load event handler
//
protected void Page_Load(object sender, EventArgs e)
{
    // The XY points for the bubble chart. The bubble chart has independent bubble
    // size on the X and Y direction.
    double[] dataX0 = {1000, 1500, 1700};
    double[] dataY0 = {25, 20, 65};
    double[] dataZX0 = {500, 200, 600};
    double[] dataZY0 = {15, 30, 20};

    double[] dataX1 = {500, 1000, 1300};
    double[] dataY1 = {35, 50, 75};
    double[] dataZX1 = {800, 300, 500};
    double[] dataZY1 = {8, 27, 25};

    double[] dataX2 = {150, 300};
    double[] dataY2 = {20, 60};
    double[] dataZX2 = {160, 400};
    double[] dataZY2 = {30, 20};

    // Create a XYChart object of size 450 x 420 pixels
    XYChart c = new XYChart(450, 420);

    // Set the plotarea at (55, 65) 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, 65, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

    // Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12
    // pts Times Bold Italic font. Set the background and border color to
    // Transparent.
    c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12).setBackground(
        Chart.Transparent);

    // Add a title to the chart using 18 pts Times Bold Itatic font.
    c.addTitle("Plasma Battery Comparison", "Times New Roman Bold Italic", 18);

    // Add titles to the axes using 12 pts Arial Bold Italic font
    c.yAxis().setTitle("Operating Current", "Arial Bold Italic", 12);
    c.xAxis().setTitle("Operating Voltage", "Arial Bold Italic", 12);

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

    // Add (dataX0, dataY0) as a standard scatter layer, and also as a "bubble"
    // scatter layer, using circles as symbols. The "bubble" scatter layer has symbol
    // size modulated by (dataZX0, dataZY0) using the scale on the x and y axes.
    c.addScatterLayer(dataX0, dataY0, "Vendor A", Chart.CircleSymbol, 9, 0xff3333,
        0xff3333);
    c.addScatterLayer(dataX0, dataY0, "", Chart.CircleSymbol, 9,
        unchecked((int)0x80ff3333), unchecked((int)0x80ff3333)).setSymbolScale(
        dataZX0, Chart.XAxisScale, dataZY0, Chart.YAxisScale);

    // Add (dataX1, dataY1) as a standard scatter layer, and also as a "bubble"
    // scatter layer, using squares as symbols. The "bubble" scatter layer has symbol
    // size modulated by (dataZX1, dataZY1) using the scale on the x and y axes.
    c.addScatterLayer(dataX1, dataY1, "Vendor B", Chart.SquareSymbol, 7, 0x3333ff,
        0x3333ff);
    c.addScatterLayer(dataX1, dataY1, "", Chart.SquareSymbol, 9,
        unchecked((int)0x803333ff), unchecked((int)0x803333ff)).setSymbolScale(
        dataZX1, Chart.XAxisScale, dataZY1, Chart.YAxisScale);

    // Add (dataX2, dataY2) as a standard scatter layer, and also as a "bubble"
    // scatter layer, using diamonds as symbols. The "bubble" scatter layer has
    // symbol size modulated by (dataZX2, dataZY2) using the scale on the x and y
    // axes.
    c.addScatterLayer(dataX2, dataY2, "Vendor C", Chart.DiamondSymbol, 9, 0x00ff00,
        0x00ff00);
    c.addScatterLayer(dataX2, dataY2, "", Chart.DiamondSymbol, 9,
        unchecked((int)0x8033ff33), unchecked((int)0x8033ff33)).setSymbolScale(
        dataZX2, Chart.XAxisScale, dataZY2, Chart.YAxisScale);

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

    // Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "",
        "title='Voltage = {x} +/- {={zx}/2} V, Current = {value} +/- {={zy}/2} A'");
}

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

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

Public Class bubblescale
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Bubble XY Scaling"
    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 img is unused because this demo only has 1 chart.
    Public Sub createChart(viewer As WinChartViewer, img As String) _
        Implements DemoModule.createChart

        ' The XY points for the bubble chart. The bubble chart has independent bubble
        ' size on the X and Y direction.
        Dim dataX0() As Double = {1000, 1500, 1700}
        Dim dataY0() As Double = {25, 20, 65}
        Dim dataZX0() As Double = {500, 200, 600}
        Dim dataZY0() As Double = {15, 30, 20}

        Dim dataX1() As Double = {500, 1000, 1300}
        Dim dataY1() As Double = {35, 50, 75}
        Dim dataZX1() As Double = {800, 300, 500}
        Dim dataZY1() As Double = {8, 27, 25}

        Dim dataX2() As Double = {150, 300}
        Dim dataY2() As Double = {20, 60}
        Dim dataZX2() As Double = {160, 400}
        Dim dataZY2() As Double = {30, 20}

        ' Create a XYChart object of size 450 x 420 pixels
        Dim c As XYChart = New XYChart(450, 420)

        ' Set the plotarea at (55, 65) 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, 65, 350, 300, -1, -1, &Hc0c0c0, &Hc0c0c0, -1)

        ' Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use
        ' 12 pts Times Bold Italic font. Set the background and border color to
        ' Transparent.
        c.addLegend(50, 30, False, "Times New Roman Bold Italic", 12 _
            ).setBackground(Chart.Transparent)

        ' Add a title to the chart using 18 pts Times Bold Itatic font.
        c.addTitle("Plasma Battery Comparison", "Times New Roman Bold Italic", 18)

        ' Add titles to the axes using 12 pts Arial Bold Italic font
        c.yAxis().setTitle("Operating Current", "Arial Bold Italic", 12)
        c.xAxis().setTitle("Operating Voltage", "Arial Bold Italic", 12)

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

        ' Add (dataX0, dataY0) as a standard scatter layer, and also as a "bubble"
        ' scatter layer, using circles as symbols. The "bubble" scatter layer has
        ' symbol size modulated by (dataZX0, dataZY0) using the scale on the x and y
        ' axes.
        c.addScatterLayer(dataX0, dataY0, "Vendor A", Chart.CircleSymbol, 9, _
            &Hff3333, &Hff3333)
        c.addScatterLayer(dataX0, dataY0, "", Chart.CircleSymbol, 9, &H80ff3333, _
            &H80ff3333).setSymbolScale(dataZX0, Chart.XAxisScale, dataZY0, _
            Chart.YAxisScale)

        ' Add (dataX1, dataY1) as a standard scatter layer, and also as a "bubble"
        ' scatter layer, using squares as symbols. The "bubble" scatter layer has
        ' symbol size modulated by (dataZX1, dataZY1) using the scale on the x and y
        ' axes.
        c.addScatterLayer(dataX1, dataY1, "Vendor B", Chart.SquareSymbol, 7, _
            &H3333ff, &H3333ff)
        c.addScatterLayer(dataX1, dataY1, "", Chart.SquareSymbol, 9, &H803333ff, _
            &H803333ff).setSymbolScale(dataZX1, Chart.XAxisScale, dataZY1, _
            Chart.YAxisScale)

        ' Add (dataX2, dataY2) as a standard scatter layer, and also as a "bubble"
        ' scatter layer, using diamonds as symbols. The "bubble" scatter layer has
        ' symbol size modulated by (dataZX2, dataZY2) using the scale on the x and y
        ' axes.
        c.addScatterLayer(dataX2, dataY2, "Vendor C", Chart.DiamondSymbol, 9, _
            &H00ff00, &H00ff00)
        c.addScatterLayer(dataX2, dataY2, "", Chart.DiamondSymbol, 9, &H8033ff33, _
            &H8033ff33).setSymbolScale(dataZX2, Chart.XAxisScale, dataZY2, _
            Chart.YAxisScale)

        ' Output the chart
        viewer.Chart = c

        'include tool tip for the chart
        viewer.ImageMap = c.getHTMLImageMap("clickable", "", _
            "title='Voltage = {x} +/- {={zx}/2} V, Current = {value} +/- " & _
            "{={zy}/2} A'")

    End Sub

End Class

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

namespace CSharpChartExplorer
{
    public class bubblescale : DemoModule
    {
        //Name of demo module
        public string getName() { return "Bubble XY Scaling"; }

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

        //Main code for creating chart.
        //Note: the argument img is unused because this demo only has 1 chart.
        public void createChart(WinChartViewer viewer, string img)
        {
            // The XY points for the bubble chart. The bubble chart has independent
            // bubble size on the X and Y direction.
            double[] dataX0 = {1000, 1500, 1700};
            double[] dataY0 = {25, 20, 65};
            double[] dataZX0 = {500, 200, 600};
            double[] dataZY0 = {15, 30, 20};

            double[] dataX1 = {500, 1000, 1300};
            double[] dataY1 = {35, 50, 75};
            double[] dataZX1 = {800, 300, 500};
            double[] dataZY1 = {8, 27, 25};

            double[] dataX2 = {150, 300};
            double[] dataY2 = {20, 60};
            double[] dataZX2 = {160, 400};
            double[] dataZY2 = {30, 20};

            // Create a XYChart object of size 450 x 420 pixels
            XYChart c = new XYChart(450, 420);

            // Set the plotarea at (55, 65) 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, 65, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1);

            // Add a legend box at (50, 30) (top of the chart) with horizontal
            // layout. Use 12 pts Times Bold Italic font. Set the background and
            // border color to Transparent.
            c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12
                ).setBackground(Chart.Transparent);

            // Add a title to the chart using 18 pts Times Bold Itatic font.
            c.addTitle("Plasma Battery Comparison", "Times New Roman Bold Italic", 18
                );

            // Add titles to the axes using 12 pts Arial Bold Italic font
            c.yAxis().setTitle("Operating Current", "Arial Bold Italic", 12);
            c.xAxis().setTitle("Operating Voltage", "Arial Bold Italic", 12);

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

            // Add (dataX0, dataY0) as a standard scatter layer, and also as a
            // "bubble" scatter layer, using circles as symbols. The "bubble" scatter
            // layer has symbol size modulated by (dataZX0, dataZY0) using the scale
            // on the x and y axes.
            c.addScatterLayer(dataX0, dataY0, "Vendor A", Chart.CircleSymbol, 9,
                0xff3333, 0xff3333);
            c.addScatterLayer(dataX0, dataY0, "", Chart.CircleSymbol, 9,
                unchecked((int)0x80ff3333), unchecked((int)0x80ff3333)
                ).setSymbolScale(dataZX0, Chart.XAxisScale, dataZY0, Chart.YAxisScale
                );

            // Add (dataX1, dataY1) as a standard scatter layer, and also as a
            // "bubble" scatter layer, using squares as symbols. The "bubble" scatter
            // layer has symbol size modulated by (dataZX1, dataZY1) using the scale
            // on the x and y axes.
            c.addScatterLayer(dataX1, dataY1, "Vendor B", Chart.SquareSymbol, 7,
                0x3333ff, 0x3333ff);
            c.addScatterLayer(dataX1, dataY1, "", Chart.SquareSymbol, 9,
                unchecked((int)0x803333ff), unchecked((int)0x803333ff)
                ).setSymbolScale(dataZX1, Chart.XAxisScale, dataZY1, Chart.YAxisScale
                );

            // Add (dataX2, dataY2) as a standard scatter layer, and also as a
            // "bubble" scatter layer, using diamonds as symbols. The "bubble"
            // scatter layer has symbol size modulated by (dataZX2, dataZY2) using
            // the scale on the x and y axes.
            c.addScatterLayer(dataX2, dataY2, "Vendor C", Chart.DiamondSymbol, 9,
                0x00ff00, 0x00ff00);
            c.addScatterLayer(dataX2, dataY2, "", Chart.DiamondSymbol, 9,
                unchecked((int)0x8033ff33), unchecked((int)0x8033ff33)
                ).setSymbolScale(dataZX2, Chart.XAxisScale, dataZY2, Chart.YAxisScale
                );

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='Voltage = {x} +/- {={zx}/2} V, Current = {value} +/- " +
                "{={zy}/2} A'");
        }
    }
}

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