ChartDirector 6.2 (.NET Edition)

Soft Multi-Bar Chart




This example demonstrates a multi-bar chart with soft lighting effects for bars and gradient color for plot area background.

Soft lighting is a special shading effect that look like gradient coloring. In this example, soft lighting effect is applied to the bars with the light coming from the left direction.

See Soft Bar Shading for another example of soft lighting effect with the light coming from the left direction.

Source Code Listing

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

namespace CSharpChartExplorer
{
    public class softmultibar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Soft 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 light red (ffdddd) to dark red (880000) as background. Set border and grid
            // lines to white (ffffff).
            c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0xffdddd, 0x880000
                ), -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, 0xffff00, "Server #1");
            layer.addDataSet(data1, 0x00ff00, "Server #2");
            layer.addDataSet(data2, 0x9999ff, "Server #3");

            // Set bar border to transparent. Use soft lighting effect with light direction from
            // top.
            layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Top));

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

Public Class softmultibar
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Soft 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 light red (ffdddd) to dark red (880000) as background. Set border and grid
        ' lines to white (ffffff).
        c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, &Hffdddd, &H880000), _
            -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, &Hffff00, "Server #1")
        layer.addDataSet(data1, &H00ff00, "Server #2")
        layer.addDataSet(data2, &H9999ff, "Server #3")

        ' Set bar border to transparent. Use soft lighting effect with light direction from top.
        layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Top))

        ' 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\softmultibar.cs
using System;
using ChartDirector;

namespace CSharpWPFDemo
{
    public class softmultibar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Soft 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 light red (ffdddd) to dark red (880000) as background. Set border and grid
            // lines to white (ffffff).
            c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0xffdddd, 0x880000
                ), -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, 0xffff00, "Server #1");
            layer.addDataSet(data1, 0x00ff00, "Server #2");
            layer.addDataSet(data2, 0x9999ff, "Server #3");

            // Set bar border to transparent. Use soft lighting effect with light direction from
            // top.
            layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Top));

            // 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\softmultibar.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 light red (ffdddd) to dark red (880000) as background. Set border and grid lines to
    // white (ffffff).
    c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0xffdddd, 0x880000), -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, 0xffff00, "Server #1");
    layer.addDataSet(data1, 0x00ff00, "Server #2");
    layer.addDataSet(data2, 0x9999ff, "Server #3");

    // Set bar border to transparent. Use soft lighting effect with light direction from top.
    layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Top));

    // 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\softmultibar.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 light red (ffdddd) to dark red (880000) as background. Set border and grid lines to white
    ' (ffffff).
    c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, &Hffdddd, &H880000), -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, &Hffff00, "Server #1")
    layer.addDataSet(data1, &H00ff00, "Server #2")
    layer.addDataSet(data2, &H9999ff, "Server #3")

    ' Set bar border to transparent. Use soft lighting effect with light direction from top.
    layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Top))

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

namespace NetMvcCharts.Controllers
{
    public class SoftmultibarController : Controller
    {
        //
        // Default Action
        //
        public ActionResult Index()
        {
            ViewBag.Title = "Soft 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 light red (ffdddd) to dark red (880000) as background. Set border and grid
            // lines to white (ffffff).
            c.setPlotArea(50, 55, 440, 280, c.linearGradientColor(0, 55, 0, 335, 0xffdddd, 0x880000), -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, 0xffff00, "Server #1");
            layer.addDataSet(data1, 0x00ff00, "Server #2");
            layer.addDataSet(data2, 0x9999ff, "Server #3");

            // Set bar border to transparent. Use soft lighting effect with light direction from top.
            layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Top));

            // 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>