ChartDirector 6.2 (.NET Edition)

Gradient Multi-Bar Chart




This example demonstrates a multi-bar chart with bar gradient shading and gradient color for plot area background.

Source Code Listing

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

namespace CSharpChartExplorer
{
    public class gradientmultibar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Gradient 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", "Thur", "Fri"};

            // Create a XYChart object of size 540 x 375 pixels
            XYChart c = new XYChart(540, 375);

            // Add a title to the chart using 18pt Times Bold Italic font
            c.addTitle("Average Weekly Network Load", "Times New Roman Bold Italic", 18);

            // Set the plotarea at (50, 55) and of 440 x 280 pixels in size. Use a vertical gradient
            // color from grey (888888) to black (000000) as background. Set border and grid lines
            // to white (ffffff).
            c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0x888888, 0x000000
                ), -1, 0xffffff, 0xffffff);

            // Add a legend box at (50, 25) using horizontal layout. Use 10pt Arial Bold as font,
            // with transparent background.
            c.addLegend(50, 25, false, "Arial Bold", 10).setBackground(Chart.Transparent);

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

            // Draw the ticks between label positions (instead of at label positions)
            c.xAxis().setTickOffset(0.5);

            // Set axis label style to 8pt Arial Bold
            c.xAxis().setLabelStyle("Arial Bold", 8);
            c.yAxis().setLabelStyle("Arial Bold", 8);

            // Set axis line width to 2 pixels
            c.xAxis().setWidth(2);
            c.yAxis().setWidth(2);

            // Add axis title
            c.yAxis().setTitle("Throughput (MBytes Per Hour)");

            // Add a multi-bar layer with 3 data sets and 4 pixels 3D depth
            BarLayer layer = c.addBarLayer2(Chart.Side, 4);
            layer.addDataSet(data0, 0x66aaee, "Server #1");
            layer.addDataSet(data1, 0xeebb22, "Server #2");
            layer.addDataSet(data2, 0xcc0000, "Server #3");

            // Set bar border to transparent. Use bar gradient lighting with light intensity from
            // 0.75 to 1.75.
            layer.setBorderColor(Chart.Transparent, Chart.barLighting(0.75, 1.75));

            // Configure the bars within a group to touch each others (no gap)
            layer.setBarGap(0.2, Chart.TouchBar);

            // 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\gradientmultibar.vb
Imports System
Imports Microsoft.VisualBasic
Imports ChartDirector

Public Class gradientmultibar
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Gradient 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", "Thur", "Fri"}

        ' Create a XYChart object of size 540 x 375 pixels
        Dim c As XYChart = New XYChart(540, 375)

        ' Add a title to the chart using 18pt Times Bold Italic font
        c.addTitle("Average Weekly Network Load", "Times New Roman Bold Italic", 18)

        ' Set the plotarea at (50, 55) and of 440 x 280 pixels in size. Use a vertical gradient
        ' color from grey (888888) to black (000000) as background. Set border and grid lines to
        ' white (ffffff).
        c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, &H888888, &H000000), _
            -1, &Hffffff, &Hffffff)

        ' Add a legend box at (50, 25) using horizontal layout. Use 10pt Arial Bold as font, with
        ' transparent background.
        c.addLegend(50, 25, False, "Arial Bold", 10).setBackground(Chart.Transparent)

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

        ' Draw the ticks between label positions (instead of at label positions)
        c.xAxis().setTickOffset(0.5)

        ' Set axis label style to 8pt Arial Bold
        c.xAxis().setLabelStyle("Arial Bold", 8)
        c.yAxis().setLabelStyle("Arial Bold", 8)

        ' Set axis line width to 2 pixels
        c.xAxis().setWidth(2)
        c.yAxis().setWidth(2)

        ' Add axis title
        c.yAxis().setTitle("Throughput (MBytes Per Hour)")

        ' Add a multi-bar layer with 3 data sets and 4 pixels 3D depth
        Dim layer As BarLayer = c.addBarLayer2(Chart.Side, 4)
        layer.addDataSet(data0, &H66aaee, "Server #1")
        layer.addDataSet(data1, &Heebb22, "Server #2")
        layer.addDataSet(data2, &Hcc0000, "Server #3")

        ' Set bar border to transparent. Use bar gradient lighting with light intensity from 0.75 to
        ' 1.75.
        layer.setBorderColor(Chart.Transparent, Chart.barLighting(0.75, 1.75))

        ' Configure the bars within a group to touch each others (no gap)
        layer.setBarGap(0.2, Chart.TouchBar)

        ' 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\gradientmultibar.cs
using System;
using ChartDirector;

namespace CSharpWPFDemo
{
    public class gradientmultibar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Gradient 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", "Thur", "Fri"};

            // Create a XYChart object of size 540 x 375 pixels
            XYChart c = new XYChart(540, 375);

            // Add a title to the chart using 18pt Times Bold Italic font
            c.addTitle("Average Weekly Network Load", "Times New Roman Bold Italic", 18);

            // Set the plotarea at (50, 55) and of 440 x 280 pixels in size. Use a vertical gradient
            // color from grey (888888) to black (000000) as background. Set border and grid lines
            // to white (ffffff).
            c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0x888888, 0x000000
                ), -1, 0xffffff, 0xffffff);

            // Add a legend box at (50, 25) using horizontal layout. Use 10pt Arial Bold as font,
            // with transparent background.
            c.addLegend(50, 25, false, "Arial Bold", 10).setBackground(Chart.Transparent);

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

            // Draw the ticks between label positions (instead of at label positions)
            c.xAxis().setTickOffset(0.5);

            // Set axis label style to 8pt Arial Bold
            c.xAxis().setLabelStyle("Arial Bold", 8);
            c.yAxis().setLabelStyle("Arial Bold", 8);

            // Set axis line width to 2 pixels
            c.xAxis().setWidth(2);
            c.yAxis().setWidth(2);

            // Add axis title
            c.yAxis().setTitle("Throughput (MBytes Per Hour)");

            // Add a multi-bar layer with 3 data sets and 4 pixels 3D depth
            BarLayer layer = c.addBarLayer2(Chart.Side, 4);
            layer.addDataSet(data0, 0x66aaee, "Server #1");
            layer.addDataSet(data1, 0xeebb22, "Server #2");
            layer.addDataSet(data2, 0xcc0000, "Server #3");

            // Set bar border to transparent. Use bar gradient lighting with light intensity from
            // 0.75 to 1.75.
            layer.setBorderColor(Chart.Transparent, Chart.barLighting(0.75, 1.75));

            // Configure the bars within a group to touch each others (no gap)
            layer.setBarGap(0.2, Chart.TouchBar);

            // 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\gradientmultibar.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", "Thur", "Fri"};

    // Create a XYChart object of size 540 x 375 pixels
    XYChart c = new XYChart(540, 375);

    // Add a title to the chart using 18pt Times Bold Italic font
    c.addTitle("Average Weekly Network Load", "Times New Roman Bold Italic", 18);

    // Set the plotarea at (50, 55) and of 440 x 280 pixels in size. Use a vertical gradient color
    // from grey (888888) to black (000000) as background. Set border and grid lines to white
    // (ffffff).
    c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0x888888, 0x000000), -1,
        0xffffff, 0xffffff);

    // Add a legend box at (50, 25) using horizontal layout. Use 10pt Arial Bold as font, with
    // transparent background.
    c.addLegend(50, 25, false, "Arial Bold", 10).setBackground(Chart.Transparent);

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

    // Draw the ticks between label positions (instead of at label positions)
    c.xAxis().setTickOffset(0.5);

    // Set axis label style to 8pt Arial Bold
    c.xAxis().setLabelStyle("Arial Bold", 8);
    c.yAxis().setLabelStyle("Arial Bold", 8);

    // Set axis line width to 2 pixels
    c.xAxis().setWidth(2);
    c.yAxis().setWidth(2);

    // Add axis title
    c.yAxis().setTitle("Throughput (MBytes Per Hour)");

    // Add a multi-bar layer with 3 data sets and 4 pixels 3D depth
    BarLayer layer = c.addBarLayer2(Chart.Side, 4);
    layer.addDataSet(data0, 0x66aaee, "Server #1");
    layer.addDataSet(data1, 0xeebb22, "Server #2");
    layer.addDataSet(data2, 0xcc0000, "Server #3");

    // Set bar border to transparent. Use bar gradient lighting with light intensity from 0.75 to
    // 1.75.
    layer.setBorderColor(Chart.Transparent, Chart.barLighting(0.75, 1.75));

    // Configure the bars within a group to touch each others (no gap)
    layer.setBarGap(0.2, Chart.TouchBar);

    // 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\gradientmultibar.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", "Thur", "Fri"}

    ' Create a XYChart object of size 540 x 375 pixels
    Dim c As XYChart = New XYChart(540, 375)

    ' Add a title to the chart using 18pt Times Bold Italic font
    c.addTitle("Average Weekly Network Load", "Times New Roman Bold Italic", 18)

    ' Set the plotarea at (50, 55) and of 440 x 280 pixels in size. Use a vertical gradient color
    ' from grey (888888) to black (000000) as background. Set border and grid lines to white
    ' (ffffff).
    c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, &H888888, &H000000), -1, _
        &Hffffff, &Hffffff)

    ' Add a legend box at (50, 25) using horizontal layout. Use 10pt Arial Bold as font, with
    ' transparent background.
    c.addLegend(50, 25, False, "Arial Bold", 10).setBackground(Chart.Transparent)

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

    ' Draw the ticks between label positions (instead of at label positions)
    c.xAxis().setTickOffset(0.5)

    ' Set axis label style to 8pt Arial Bold
    c.xAxis().setLabelStyle("Arial Bold", 8)
    c.yAxis().setLabelStyle("Arial Bold", 8)

    ' Set axis line width to 2 pixels
    c.xAxis().setWidth(2)
    c.yAxis().setWidth(2)

    ' Add axis title
    c.yAxis().setTitle("Throughput (MBytes Per Hour)")

    ' Add a multi-bar layer with 3 data sets and 4 pixels 3D depth
    Dim layer As BarLayer = c.addBarLayer2(Chart.Side, 4)
    layer.addDataSet(data0, &H66aaee, "Server #1")
    layer.addDataSet(data1, &Heebb22, "Server #2")
    layer.addDataSet(data2, &Hcc0000, "Server #3")

    ' Set bar border to transparent. Use bar gradient lighting with light intensity from 0.75 to
    ' 1.75.
    layer.setBorderColor(Chart.Transparent, Chart.barLighting(0.75, 1.75))

    ' Configure the bars within a group to touch each others (no gap)
    layer.setBarGap(0.2, Chart.TouchBar)

    ' 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\GradientmultibarController.cs
using System;
using System.Web.Mvc;
using ChartDirector;

namespace NetMvcCharts.Controllers
{
    public class GradientmultibarController : Controller
    {
        //
        // Default Action
        //
        public ActionResult Index()
        {
            ViewBag.Title = "Gradient 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", "Thur", "Fri"};

            // Create a XYChart object of size 540 x 375 pixels
            XYChart c = new XYChart(540, 375);

            // Add a title to the chart using 18pt Times Bold Italic font
            c.addTitle("Average Weekly Network Load", "Times New Roman Bold Italic", 18);

            // Set the plotarea at (50, 55) and of 440 x 280 pixels in size. Use a vertical gradient
            // color from grey (888888) to black (000000) as background. Set border and grid lines to
            // white (ffffff).
            c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0x888888, 0x000000), -1,
                0xffffff, 0xffffff);

            // Add a legend box at (50, 25) using horizontal layout. Use 10pt Arial Bold as font, with
            // transparent background.
            c.addLegend(50, 25, false, "Arial Bold", 10).setBackground(Chart.Transparent);

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

            // Draw the ticks between label positions (instead of at label positions)
            c.xAxis().setTickOffset(0.5);

            // Set axis label style to 8pt Arial Bold
            c.xAxis().setLabelStyle("Arial Bold", 8);
            c.yAxis().setLabelStyle("Arial Bold", 8);

            // Set axis line width to 2 pixels
            c.xAxis().setWidth(2);
            c.yAxis().setWidth(2);

            // Add axis title
            c.yAxis().setTitle("Throughput (MBytes Per Hour)");

            // Add a multi-bar layer with 3 data sets and 4 pixels 3D depth
            BarLayer layer = c.addBarLayer2(Chart.Side, 4);
            layer.addDataSet(data0, 0x66aaee, "Server #1");
            layer.addDataSet(data1, 0xeebb22, "Server #2");
            layer.addDataSet(data2, 0xcc0000, "Server #3");

            // Set bar border to transparent. Use bar gradient lighting with light intensity from 0.75 to
            // 1.75.
            layer.setBorderColor(Chart.Transparent, Chart.barLighting(0.75, 1.75));

            // Configure the bars within a group to touch each others (no gap)
            layer.setBarGap(0.2, Chart.TouchBar);

            // 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>