ChartDirector 6.2 (.NET Edition)

Multi-Bar Chart




This example demonstrates a multi-bar chart, in which bars are clustered. It also demonstrates using alternative plot area background colors, and putting legends internal to the plot area.

A multi-bar chart is a bar chart in which multiple data sets are represented by drawing the bars side by side in a cluster. The multi-bar layer is created by using XYChart.addBarLayer2 with the Side predefined constant.

In this example, the two alternative background colors in the plot area is achieved by specifying two background colors in PlotArea.setBackground. ChartDirector also supports another method PlotArea.setAltBgColor that can be used for both horizontal and vertical alternative background colors.

Note that in this example, a margin is configured at the top of the plot area for the legend keys. This is achieved by using Axis.setMargin.

Source Code Listing

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

namespace CSharpChartExplorer
{
    public class multibar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Multi-Bar 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 bar chart
            double[] data0 = {100, 125, 245, 147, 67};
            double[] data1 = {85, 156, 179, 211, 123};
            double[] data2 = {97, 87, 56, 267, 157};
            string[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"};

            // Create a XYChart object of size 400 x 240 pixels
            XYChart c = new XYChart(400, 240);

            // Add a title to the chart using 10 pt Arial font
            c.addTitle("         Average Weekday Network Load", "", 10);

            // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background
            // colors (0xffffc0 and 0xffffe0)
            c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0);

            // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with
            // transparent background
            c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent);

            // Add a title to the y-axis
            c.yAxis().setTitle("Throughput (MBytes Per Hour)");

            // Reserve 20 pixels at the top of the y-axis for the legend box
            c.yAxis().setTopMargin(20);

            // Set the x axis labels
            c.xAxis().setLabels(labels);

            // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth
            BarLayer layer = c.addBarLayer2(Chart.Side, 3);
            layer.addDataSet(data0, 0xff8080, "Server #1");
            layer.addDataSet(data1, 0x80ff80, "Server #2");
            layer.addDataSet(data2, 0x8080ff, "Server #3");

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='{dataSetName} on {xLabel}: {value} MBytes/hour'");
        }
    }
}

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

Public Class multibar
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Multi-Bar 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 bar chart
        Dim data0() As Double = {100, 125, 245, 147, 67}
        Dim data1() As Double = {85, 156, 179, 211, 123}
        Dim data2() As Double = {97, 87, 56, 267, 157}
        Dim labels() As String = {"Mon", "Tue", "Wed", "Thu", "Fri"}

        ' Create a XYChart object of size 400 x 240 pixels
        Dim c As XYChart = New XYChart(400, 240)

        ' Add a title to the chart using 10 pt Arial font
        c.addTitle("         Average Weekday Network Load", "", 10)

        ' Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors
        ' (0xffffc0 and 0xffffe0)
        c.setPlotArea(50, 25, 320, 180, &Hffffc0, &Hffffe0)

        ' Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with
        ' transparent background
        c.addLegend(55, 18, False, "", 8).setBackground(Chart.Transparent)

        ' Add a title to the y-axis
        c.yAxis().setTitle("Throughput (MBytes Per Hour)")

        ' Reserve 20 pixels at the top of the y-axis for the legend box
        c.yAxis().setTopMargin(20)

        ' Set the x axis labels
        c.xAxis().setLabels(labels)

        ' Add a multi-bar layer with 3 data sets and 3 pixels 3D depth
        Dim layer As BarLayer = c.addBarLayer2(Chart.Side, 3)
        layer.addDataSet(data0, &Hff8080, "Server #1")
        layer.addDataSet(data1, &H80ff80, "Server #2")
        layer.addDataSet(data2, &H8080ff, "Server #3")

        ' Output the chart
        viewer.Chart = c

        'include tool tip for the chart
        viewer.ImageMap = c.getHTMLImageMap("clickable", "", _
            "title='{dataSetName} on {xLabel}: {value} MBytes/hour'")

    End Sub

End Class

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

namespace CSharpWPFDemo
{
    public class multibar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Multi-Bar 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 bar chart
            double[] data0 = {100, 125, 245, 147, 67};
            double[] data1 = {85, 156, 179, 211, 123};
            double[] data2 = {97, 87, 56, 267, 157};
            string[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"};

            // Create a XYChart object of size 400 x 240 pixels
            XYChart c = new XYChart(400, 240);

            // Add a title to the chart using 10 pt Arial font
            c.addTitle("         Average Weekday Network Load", "", 10);

            // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background
            // colors (0xffffc0 and 0xffffe0)
            c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0);

            // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with
            // transparent background
            c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent);

            // Add a title to the y-axis
            c.yAxis().setTitle("Throughput (MBytes Per Hour)");

            // Reserve 20 pixels at the top of the y-axis for the legend box
            c.yAxis().setTopMargin(20);

            // Set the x axis labels
            c.xAxis().setLabels(labels);

            // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth
            BarLayer layer = c.addBarLayer2(Chart.Side, 3);
            layer.addDataSet(data0, 0xff8080, "Server #1");
            layer.addDataSet(data1, 0x80ff80, "Server #2");
            layer.addDataSet(data2, 0x8080ff, "Server #3");

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='{dataSetName} on {xLabel}: {value} MBytes/hour'");
        }
    }
}

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\multibar.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 bar chart
    double[] data0 = {100, 125, 245, 147, 67};
    double[] data1 = {85, 156, 179, 211, 123};
    double[] data2 = {97, 87, 56, 267, 157};
    string[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"};

    // Create a XYChart object of size 400 x 240 pixels
    XYChart c = new XYChart(400, 240);

    // Add a title to the chart using 10 pt Arial font
    c.addTitle("         Average Weekday Network Load", "", 10);

    // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors
    // (0xffffc0 and 0xffffe0)
    c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0);

    // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with transparent
    // background
    c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent);

    // Add a title to the y-axis
    c.yAxis().setTitle("Throughput (MBytes Per Hour)");

    // Reserve 20 pixels at the top of the y-axis for the legend box
    c.yAxis().setTopMargin(20);

    // Set the x axis labels
    c.xAxis().setLabels(labels);

    // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth
    BarLayer layer = c.addBarLayer2(Chart.Side, 3);
    layer.addDataSet(data0, 0xff8080, "Server #1");
    layer.addDataSet(data1, 0x80ff80, "Server #2");
    layer.addDataSet(data2, 0x8080ff, "Server #3");

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

    // Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "",
        "title='{dataSetName} on {xLabel}: {value} MBytes/hour'");
}

</script>

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

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\multibar.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 bar chart
    Dim data0() As Double = {100, 125, 245, 147, 67}
    Dim data1() As Double = {85, 156, 179, 211, 123}
    Dim data2() As Double = {97, 87, 56, 267, 157}
    Dim labels() As String = {"Mon", "Tue", "Wed", "Thu", "Fri"}

    ' Create a XYChart object of size 400 x 240 pixels
    Dim c As XYChart = New XYChart(400, 240)

    ' Add a title to the chart using 10 pt Arial font
    c.addTitle("         Average Weekday Network Load", "", 10)

    ' Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors
    ' (0xffffc0 and 0xffffe0)
    c.setPlotArea(50, 25, 320, 180, &Hffffc0, &Hffffe0)

    ' Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with transparent
    ' background
    c.addLegend(55, 18, False, "", 8).setBackground(Chart.Transparent)

    ' Add a title to the y-axis
    c.yAxis().setTitle("Throughput (MBytes Per Hour)")

    ' Reserve 20 pixels at the top of the y-axis for the legend box
    c.yAxis().setTopMargin(20)

    ' Set the x axis labels
    c.xAxis().setLabels(labels)

    ' Add a multi-bar layer with 3 data sets and 3 pixels 3D depth
    Dim layer As BarLayer = c.addBarLayer2(Chart.Side, 3)
    layer.addDataSet(data0, &Hff8080, "Server #1")
    layer.addDataSet(data1, &H80ff80, "Server #2")
    layer.addDataSet(data2, &H8080ff, "Server #3")

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

    ' Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _
        "title='{dataSetName} on {xLabel}: {value} MBytes/hour'")

End Sub

</script>

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

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

namespace NetMvcCharts.Controllers
{
    public class MultibarController : Controller
    {
        //
        // Default Action
        //
        public ActionResult Index()
        {
            ViewBag.Title = "Multi-Bar 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 bar chart
            double[] data0 = {100, 125, 245, 147, 67};
            double[] data1 = {85, 156, 179, 211, 123};
            double[] data2 = {97, 87, 56, 267, 157};
            string[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"};

            // Create a XYChart object of size 400 x 240 pixels
            XYChart c = new XYChart(400, 240);

            // Add a title to the chart using 10 pt Arial font
            c.addTitle("         Average Weekday Network Load", "", 10);

            // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors
            // (0xffffc0 and 0xffffe0)
            c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0);

            // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with
            // transparent background
            c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent);

            // Add a title to the y-axis
            c.yAxis().setTitle("Throughput (MBytes Per Hour)");

            // Reserve 20 pixels at the top of the y-axis for the legend box
            c.yAxis().setTopMargin(20);

            // Set the x axis labels
            c.xAxis().setLabels(labels);

            // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth
            BarLayer layer = c.addBarLayer2(Chart.Side, 3);
            layer.addDataSet(data0, 0xff8080, "Server #1");
            layer.addDataSet(data1, 0x80ff80, "Server #2");
            layer.addDataSet(data2, 0x8080ff, "Server #3");

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

            // Include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("", "",
                "title='{dataSetName} on {xLabel}: {value} MBytes/hour'");
        }
    }
}

[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>