ChartDirector 5.1 (.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

[ASP.NET - VB Version] NetWebCharts\VBNetASP\splineline.aspx
(Click here on how to convert this code to Visual Studio code-behind style.) 
<%@ Page Language="VB" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>
<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 9
    ' pts 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 15 pts 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 - C# Version] NetWebCharts\CSharpASP\splineline.aspx
(Click here on how to convert this code to Visual Studio code-behind style.) 
<%@ Page Language="C#" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>
<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 9
    // pts 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 15 pts 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\n" +
        "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'");
}

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

[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 img is unused because this demo only has 1 chart.
    Public Sub createChart(viewer As WinChartViewer, img As String) _
        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
        ' 9 pts 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 15 pts 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

[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 img is unused because this demo only has 1 chart.
        public void createChart(WinChartViewer viewer, string img)
        {
            // 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 9 pts 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 15 pts 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'");
        }
    }
}

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