ChartDirector 6.2 (.NET Edition)

Spline Line Chart




This example demonstrates using spline curves to join data points, title with soft lighting effect, as well as a number of chart formatting techniques.

Source Code Listing

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

namespace CSharpChartExplorer
{
    public class splineline : DemoModule
    {
        //Name of demo module
        public string getName() { return "Spline Line 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 chart
            double[] data0 = {32, 39, 23, 28, 41, 38, 26, 35, 29};
            double[] data1 = {50, 55, 47, 34, 47, 53, 38, 40, 51};

            // The labels for the chart
            string[] labels = {"0", "1", "2", "3", "4", "5", "6", "7", "8"};

            // Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd)
            // background, black border, 1 pixel 3D border effect and rounded corners.
            XYChart c = new XYChart(600, 300, 0xffdddd, 0x000000, 1);
            c.setRoundedFrame();

            // Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff)
            // background. Set horizontal and vertical grid lines to grey (cccccc).
            c.setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);

            // Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial
            // Bold font. Set the background and border color to Transparent.
            c.addLegend(55, 32, false, "Arial Bold", 9).setBackground(Chart.Transparent);

            // Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML
            // and includes embedded images for highlight. The text is white (ffffff) on a dark red
            // (880000) background, with soft lighting effect from the right side.
            c.addTitle(
                "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " +
                "<*img=star.png*><*img=star.png*><*/*>", "Times New Roman Bold Italic", 15, 0xffffff
                ).setBackground(0x880000, -1, Chart.softLighting(Chart.Right));

            // Add a title to the y axis
            c.yAxis().setTitle("Energy Concentration (KJ per liter)");

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

            // Add a title to the x axis using CMDL
            c.xAxis().setTitle(
                "<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>");

            // Set the axes width to 2 pixels
            c.xAxis().setWidth(2);
            c.yAxis().setWidth(2);

            // Add a spline layer to the chart
            SplineLayer layer = c.addSplineLayer();

            // Set the default line width to 2 pixels
            layer.setLineWidth(2);

            // Add a data set to the spline layer, using blue (0000c0) as the line color, with
            // yellow (ffff00) circle symbols.
            layer.addDataSet(data1, 0x0000c0, "Target Group").setDataSymbol(Chart.CircleSymbol, 9,
                0xffff00);

            // Add a data set to the spline layer, using brown (982810) as the line color, with pink
            // (f040f0) diamond symbols.
            layer.addDataSet(data0, 0x982810, "Control Group").setDataSymbol(Chart.DiamondSymbol,
                11, 0xf040f0);

            // Add a custom CDML text at the bottom right of the plot area as the logo
            c.addText(575, 250,
                "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*><*font=Times New " +
                "Roman Bold Italic,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
                Chart.BottomRight);

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='{dataSetName} at t = {xLabel} hour: {value} KJ/liter'");
        }
    }
}

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

Public Class splineline
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Spline Line 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 chart
        Dim data0() As Double = {32, 39, 23, 28, 41, 38, 26, 35, 29}
        Dim data1() As Double = {50, 55, 47, 34, 47, 53, 38, 40, 51}

        ' The labels for the chart
        Dim labels() As String = {"0", "1", "2", "3", "4", "5", "6", "7", "8"}

        ' Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd) background,
        ' black border, 1 pixel 3D border effect and rounded corners.
        Dim c As XYChart = New XYChart(600, 300, &Hffdddd, &H000000, 1)
        c.setRoundedFrame()

        ' Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff) background.
        ' Set horizontal and vertical grid lines to grey (cccccc).
        c.setPlotArea(55, 58, 520, 195, &Hffffff, -1, -1, &Hcccccc, &Hcccccc)

        ' Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial Bold
        ' font. Set the background and border color to Transparent.
        c.addLegend(55, 32, False, "Arial Bold", 9).setBackground(Chart.Transparent)

        ' Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and
        ' includes embedded images for highlight. The text is white (ffffff) on a dark red (880000)
        ' background, with soft lighting effect from the right side.
        c.addTitle( _
            "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " & _
            "<*img=star.png*><*img=star.png*><*/*>", "Times New Roman Bold Italic", 15, &Hffffff _
            ).setBackground(&H880000, -1, Chart.softLighting(Chart.Right))

        ' Add a title to the y axis
        c.yAxis().setTitle("Energy Concentration (KJ per liter)")

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

        ' Add a title to the x axis using CMDL
        c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>")

        ' Set the axes width to 2 pixels
        c.xAxis().setWidth(2)
        c.yAxis().setWidth(2)

        ' Add a spline layer to the chart
        Dim layer As SplineLayer = c.addSplineLayer()

        ' Set the default line width to 2 pixels
        layer.setLineWidth(2)

        ' Add a data set to the spline layer, using blue (0000c0) as the line color, with yellow
        ' (ffff00) circle symbols.
        layer.addDataSet(data1, &H0000c0, "Target Group").setDataSymbol(Chart.CircleSymbol, 9, _
            &Hffff00)

        ' Add a data set to the spline layer, using brown (982810) as the line color, with pink
        ' (f040f0) diamond symbols.
        layer.addDataSet(data0, &H982810, "Control Group").setDataSymbol(Chart.DiamondSymbol, 11, _
            &Hf040f0)

        ' Add a custom CDML text at the bottom right of the plot area as the logo
        c.addText(575, 250, _
            "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*><*font=Times New " & _
            "Roman Bold Italic,size=10,color=804040*>Molecular<*br*>Engineering<*/*>" _
            ).setAlignment(Chart.BottomRight)

        ' Output the chart
        viewer.Chart = c

        'include tool tip for the chart
        viewer.ImageMap = c.getHTMLImageMap("clickable", "", _
            "title='{dataSetName} at t = {xLabel} hour: {value} KJ/liter'")

    End Sub

End Class

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

namespace CSharpWPFDemo
{
    public class splineline : DemoModule
    {
        //Name of demo module
        public string getName() { return "Spline Line 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 chart
            double[] data0 = {32, 39, 23, 28, 41, 38, 26, 35, 29};
            double[] data1 = {50, 55, 47, 34, 47, 53, 38, 40, 51};

            // The labels for the chart
            string[] labels = {"0", "1", "2", "3", "4", "5", "6", "7", "8"};

            // Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd)
            // background, black border, 1 pixel 3D border effect and rounded corners.
            XYChart c = new XYChart(600, 300, 0xffdddd, 0x000000, 1);
            c.setRoundedFrame();

            // Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff)
            // background. Set horizontal and vertical grid lines to grey (cccccc).
            c.setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);

            // Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial
            // Bold font. Set the background and border color to Transparent.
            c.addLegend(55, 32, false, "Arial Bold", 9).setBackground(Chart.Transparent);

            // Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML
            // and includes embedded images for highlight. The text is white (ffffff) on a dark red
            // (880000) background, with soft lighting effect from the right side.
            c.addTitle(
                "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " +
                "<*img=star.png*><*img=star.png*><*/*>", "Times New Roman Bold Italic", 15, 0xffffff
                ).setBackground(0x880000, -1, Chart.softLighting(Chart.Right));

            // Add a title to the y axis
            c.yAxis().setTitle("Energy Concentration (KJ per liter)");

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

            // Add a title to the x axis using CMDL
            c.xAxis().setTitle(
                "<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>");

            // Set the axes width to 2 pixels
            c.xAxis().setWidth(2);
            c.yAxis().setWidth(2);

            // Add a spline layer to the chart
            SplineLayer layer = c.addSplineLayer();

            // Set the default line width to 2 pixels
            layer.setLineWidth(2);

            // Add a data set to the spline layer, using blue (0000c0) as the line color, with
            // yellow (ffff00) circle symbols.
            layer.addDataSet(data1, 0x0000c0, "Target Group").setDataSymbol(Chart.CircleSymbol, 9,
                0xffff00);

            // Add a data set to the spline layer, using brown (982810) as the line color, with pink
            // (f040f0) diamond symbols.
            layer.addDataSet(data0, 0x982810, "Control Group").setDataSymbol(Chart.DiamondSymbol,
                11, 0xf040f0);

            // Add a custom CDML text at the bottom right of the plot area as the logo
            c.addText(575, 250,
                "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*><*font=Times New " +
                "Roman Bold Italic,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
                Chart.BottomRight);

            // Output the chart
            viewer.Chart = c;

            //include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable", "",
                "title='{dataSetName} at t = {xLabel} hour: {value} KJ/liter'");
        }
    }
}

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\splineline.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 chart
    double[] data0 = {32, 39, 23, 28, 41, 38, 26, 35, 29};
    double[] data1 = {50, 55, 47, 34, 47, 53, 38, 40, 51};

    // The labels for the chart
    string[] labels = {"0", "1", "2", "3", "4", "5", "6", "7", "8"};

    // Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd) background, black
    // border, 1 pixel 3D border effect and rounded corners.
    XYChart c = new XYChart(600, 300, 0xffdddd, 0x000000, 1);
    c.setRoundedFrame();

    //Set default directory for loading images from current script directory
    c.setSearchPath(Server.MapPath("."));

    // Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff) background.
    // Set horizontal and vertical grid lines to grey (cccccc).
    c.setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);

    // Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial Bold
    // font. Set the background and border color to Transparent.
    c.addLegend(55, 32, false, "Arial Bold", 9).setBackground(Chart.Transparent);

    // Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and
    // includes embedded images for highlight. The text is white (ffffff) on a dark red (880000)
    // background, with soft lighting effect from the right side.
    c.addTitle(
        "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " +
        "<*img=star.png*><*img=star.png*><*/*>", "Times New Roman Bold Italic", 15, 0xffffff
        ).setBackground(0x880000, -1, Chart.softLighting(Chart.Right));

    // Add a title to the y axis
    c.yAxis().setTitle("Energy Concentration (KJ per liter)");

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

    // Add a title to the x axis using CMDL
    c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>");

    // Set the axes width to 2 pixels
    c.xAxis().setWidth(2);
    c.yAxis().setWidth(2);

    // Add a spline layer to the chart
    SplineLayer layer = c.addSplineLayer();

    // Set the default line width to 2 pixels
    layer.setLineWidth(2);

    // Add a data set to the spline layer, using blue (0000c0) as the line color, with yellow
    // (ffff00) circle symbols.
    layer.addDataSet(data1, 0x0000c0, "Target Group").setDataSymbol(Chart.CircleSymbol, 9, 0xffff00)
        ;

    // Add a data set to the spline layer, using brown (982810) as the line color, with pink
    // (f040f0) diamond symbols.
    layer.addDataSet(data0, 0x982810, "Control Group").setDataSymbol(Chart.DiamondSymbol, 11,
        0xf040f0);

    // Add a custom CDML text at the bottom right of the plot area as the logo
    c.addText(575, 250,
        "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*><*font=Times New Roman " +
        "Bold Italic,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
        Chart.BottomRight);

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

    // Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "",
        "title='{dataSetName} at t = {xLabel} hour: {value} KJ/liter'");
}

</script>

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

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\splineline.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 chart
    Dim data0() As Double = {32, 39, 23, 28, 41, 38, 26, 35, 29}
    Dim data1() As Double = {50, 55, 47, 34, 47, 53, 38, 40, 51}

    ' The labels for the chart
    Dim labels() As String = {"0", "1", "2", "3", "4", "5", "6", "7", "8"}

    ' Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd) background, black
    ' border, 1 pixel 3D border effect and rounded corners.
    Dim c As XYChart = New XYChart(600, 300, &Hffdddd, &H000000, 1)
    c.setRoundedFrame()

    ' Set default directory for loading images from current script directory
    Call c.setSearchPath(Server.MapPath("."))

    ' Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff) background. Set
    ' horizontal and vertical grid lines to grey (cccccc).
    c.setPlotArea(55, 58, 520, 195, &Hffffff, -1, -1, &Hcccccc, &Hcccccc)

    ' Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial Bold
    ' font. Set the background and border color to Transparent.
    c.addLegend(55, 32, False, "Arial Bold", 9).setBackground(Chart.Transparent)

    ' Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and
    ' includes embedded images for highlight. The text is white (ffffff) on a dark red (880000)
    ' background, with soft lighting effect from the right side.
    c.addTitle( _
        "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " & _
        "<*img=star.png*><*img=star.png*><*/*>", "Times New Roman Bold Italic", 15, &Hffffff _
        ).setBackground(&H880000, -1, Chart.softLighting(Chart.Right))

    ' Add a title to the y axis
    c.yAxis().setTitle("Energy Concentration (KJ per liter)")

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

    ' Add a title to the x axis using CMDL
    c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>")

    ' Set the axes width to 2 pixels
    c.xAxis().setWidth(2)
    c.yAxis().setWidth(2)

    ' Add a spline layer to the chart
    Dim layer As SplineLayer = c.addSplineLayer()

    ' Set the default line width to 2 pixels
    layer.setLineWidth(2)

    ' Add a data set to the spline layer, using blue (0000c0) as the line color, with yellow
    ' (ffff00) circle symbols.
    layer.addDataSet(data1, &H0000c0, "Target Group").setDataSymbol(Chart.CircleSymbol, 9, _
        &Hffff00)

    ' Add a data set to the spline layer, using brown (982810) as the line color, with pink (f040f0)
    ' diamond symbols.
    layer.addDataSet(data0, &H982810, "Control Group").setDataSymbol(Chart.DiamondSymbol, 11, _
        &Hf040f0)

    ' Add a custom CDML text at the bottom right of the plot area as the logo
    c.addText(575, 250, _
        "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*><*font=Times New Roman " & _
        "Bold Italic,size=10,color=804040*>Molecular<*br*>Engineering<*/*>").setAlignment( _
        Chart.BottomRight)

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

    ' Include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _
        "title='{dataSetName} at t = {xLabel} hour: {value} KJ/liter'")

End Sub

</script>

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

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

namespace NetMvcCharts.Controllers
{
    public class SplinelineController : Controller
    {
        //
        // Default Action
        //
        public ActionResult Index()
        {
            ViewBag.Title = "Spline Line 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 chart
            double[] data0 = {32, 39, 23, 28, 41, 38, 26, 35, 29};
            double[] data1 = {50, 55, 47, 34, 47, 53, 38, 40, 51};

            // The labels for the chart
            string[] labels = {"0", "1", "2", "3", "4", "5", "6", "7", "8"};

            // Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd) background,
            // black border, 1 pixel 3D border effect and rounded corners.
            XYChart c = new XYChart(600, 300, 0xffdddd, 0x000000, 1);
            c.setRoundedFrame();

            //Set default directory for loading images
            c.setSearchPath(Url.Content("~/Content"));

            // Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff) background.
            // Set horizontal and vertical grid lines to grey (cccccc).
            c.setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);

            // Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial Bold
            // font. Set the background and border color to Transparent.
            c.addLegend(55, 32, false, "Arial Bold", 9).setBackground(Chart.Transparent);

            // Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and
            // includes embedded images for highlight. The text is white (ffffff) on a dark red (880000)
            // background, with soft lighting effect from the right side.
            c.addTitle(
                "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " +
                "<*img=star.png*><*img=star.png*><*/*>", "Times New Roman Bold Italic", 15, 0xffffff
                ).setBackground(0x880000, -1, Chart.softLighting(Chart.Right));

            // Add a title to the y axis
            c.yAxis().setTitle("Energy Concentration (KJ per liter)");

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

            // Add a title to the x axis using CMDL
            c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>");

            // Set the axes width to 2 pixels
            c.xAxis().setWidth(2);
            c.yAxis().setWidth(2);

            // Add a spline layer to the chart
            SplineLayer layer = c.addSplineLayer();

            // Set the default line width to 2 pixels
            layer.setLineWidth(2);

            // Add a data set to the spline layer, using blue (0000c0) as the line color, with yellow
            // (ffff00) circle symbols.
            layer.addDataSet(data1, 0x0000c0, "Target Group").setDataSymbol(Chart.CircleSymbol, 9,
                0xffff00);

            // Add a data set to the spline layer, using brown (982810) as the line color, with pink
            // (f040f0) diamond symbols.
            layer.addDataSet(data0, 0x982810, "Control Group").setDataSymbol(Chart.DiamondSymbol, 11,
                0xf040f0);

            // Add a custom CDML text at the bottom right of the plot area as the logo
            c.addText(575, 250,
                "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*><*font=Times New Roman " +
                "Bold Italic,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
                Chart.BottomRight);

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

            // Include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("", "",
                "title='{dataSetName} at t = {xLabel} hour: {value} KJ/liter'");
        }
    }
}

[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>