ChartDirector 6.2 (.NET Edition)

Soft Bar Shading




This example demonstrates using soft lighting effect for bars and gradient color for plot area background. It also demonstrates putting axis ticks in between axis labels, as opposed to at the axis labels.

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 Multi-Bar Chart for another example of soft lighting effect with the light coming from the top direction.

Source Code Listing

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

namespace CSharpChartExplorer
{
    public class softlightbar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Soft Bar Shading"; }

        //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[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

            // The labels for the bar chart
            string[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003",
                "2004", "2005"};

            // Create a XYChart object of size 600 x 360 pixels
            XYChart c = new XYChart(600, 360);

            // Add a title to the chart using 18pt Times Bold Italic font
            c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

            // Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient
            // color from light blue (eeeeff) to deep blue (0000cc) as background. Set border and
            // grid lines to white (ffffff).
            c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff,
                0x0000cc), -1, 0xffffff, 0xffffff);

            // Add a multi-color bar chart layer using the supplied data. Use soft lighting effect
            // with light direction from left.
            c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

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

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

            // Add a title to the y axis with 10pt Arial Bold font
            c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);

            // 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);

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='Year {xLabel}: US$ {value}M'");
        }
    }
}

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

Public Class softlightbar
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Soft Bar Shading"
    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 data() As Double = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700}

        ' The labels for the bar chart
        Dim labels() As String = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", _
            "2004", "2005"}

        ' Create a XYChart object of size 600 x 360 pixels
        Dim c As XYChart = New XYChart(600, 360)

        ' Add a title to the chart using 18pt Times Bold Italic font
        c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18)

        ' Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient color
        ' from light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to
        ' white (ffffff).
        c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, &Heeeeff, &H0000cc _
            ), -1, &Hffffff, &Hffffff)

        ' Add a multi-color bar chart layer using the supplied data. Use soft lighting effect with
        ' light direction from left.
        c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left))

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

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

        ' Add a title to the y axis with 10pt Arial Bold font
        c.yAxis().setTitle("USD (millions)", "Arial Bold", 10)

        ' 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)

        ' Output the chart
        viewer.Chart = c

        'include tool tip for the chart
        viewer.ImageMap = c.getHTMLImageMap("clickable", "", "title='Year {xLabel}: US$ {value}M'")

    End Sub

End Class

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

namespace CSharpWPFDemo
{
    public class softlightbar : DemoModule
    {
        //Name of demo module
        public string getName() { return "Soft Bar Shading"; }

        //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[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

            // The labels for the bar chart
            string[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003",
                "2004", "2005"};

            // Create a XYChart object of size 600 x 360 pixels
            XYChart c = new XYChart(600, 360);

            // Add a title to the chart using 18pt Times Bold Italic font
            c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

            // Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient
            // color from light blue (eeeeff) to deep blue (0000cc) as background. Set border and
            // grid lines to white (ffffff).
            c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff,
                0x0000cc), -1, 0xffffff, 0xffffff);

            // Add a multi-color bar chart layer using the supplied data. Use soft lighting effect
            // with light direction from left.
            c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

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

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

            // Add a title to the y axis with 10pt Arial Bold font
            c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);

            // 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);

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='Year {xLabel}: US$ {value}M'");
        }
    }
}

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\softlightbar.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[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

    // The labels for the bar chart
    string[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
        "2005"};

    // Create a XYChart object of size 600 x 360 pixels
    XYChart c = new XYChart(600, 360);

    // Add a title to the chart using 18pt Times Bold Italic font
    c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

    // Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient color from
    // light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to white
    // (ffffff).
    c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff, 0x0000cc), -1,
        0xffffff, 0xffffff);

    // Add a multi-color bar chart layer using the supplied data. Use soft lighting effect with
    // light direction from left.
    c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

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

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

    // Add a title to the y axis with 10pt Arial Bold font
    c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);

    // 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);

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

    // Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", "title='Year {xLabel}: US$ {value}M'");
}

</script>

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

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\softlightbar.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 data() As Double = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700}

    ' The labels for the bar chart
    Dim labels() As String = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", _
        "2004", "2005"}

    ' Create a XYChart object of size 600 x 360 pixels
    Dim c As XYChart = New XYChart(600, 360)

    ' Add a title to the chart using 18pt Times Bold Italic font
    c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18)

    ' Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient color from
    ' light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to white
    ' (ffffff).
    c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, &Heeeeff, &H0000cc), _
        -1, &Hffffff, &Hffffff)

    ' Add a multi-color bar chart layer using the supplied data. Use soft lighting effect with light
    ' direction from left.
    c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left))

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

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

    ' Add a title to the y axis with 10pt Arial Bold font
    c.yAxis().setTitle("USD (millions)", "Arial Bold", 10)

    ' 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)

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

    ' Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", "title='Year {xLabel}: US$ {value}M'")

End Sub

</script>

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

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

namespace NetMvcCharts.Controllers
{
    public class SoftlightbarController : Controller
    {
        //
        // Default Action
        //
        public ActionResult Index()
        {
            ViewBag.Title = "Soft Bar Shading";
            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[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

            // The labels for the bar chart
            string[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
                "2005"};

            // Create a XYChart object of size 600 x 360 pixels
            XYChart c = new XYChart(600, 360);

            // Add a title to the chart using 18pt Times Bold Italic font
            c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

            // Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient color
            // from light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to
            // white (ffffff).
            c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff, 0x0000cc),
                -1, 0xffffff, 0xffffff);

            // Add a multi-color bar chart layer using the supplied data. Use soft lighting effect with
            // light direction from left.
            c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

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

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

            // Add a title to the y axis with 10pt Arial Bold font
            c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);

            // 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);

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

            // Include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("", "", "title='Year {xLabel}: US$ {value}M'");
        }
    }
}

[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>