ChartDirector 7.1 (.NET Edition)

Multi-Bar Chart




This example demonstrates a multi-bar chart, in which bars are clustered. It also demonstrates using alternative plot area background colors, and putting legends internal to the plot area.

A multi-bar chart is a bar chart in which multiple data sets are represented by drawing the bars side by side in a cluster. The multi-bar layer is created by using XYChart.addBarLayer2 with the Side predefined constant.

In this example, the two alternative background colors in the plot area is achieved by specifying two background colors in PlotArea.setBackground. ChartDirector also supports another method PlotArea.setAltBgColor that can be used for both horizontal and vertical alternative background colors.

Note that in this example, a margin is configured at the top of the plot area for the legend keys. This is achieved by using Axis.setMargin.

Source Code Listing

[Windows Forms - C# version] NetWinCharts\CSharpWinCharts\multibar.cs
using System; using ChartDirector; namespace CSharpChartExplorer { public class multibar : DemoModule { //Name of demo module public string getName() { return "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", "Thu", "Fri"}; // Create a XYChart object of size 400 x 240 pixels XYChart c = new XYChart(400, 240); // Add a title to the chart using 10 pt Arial font c.addTitle(" Average Weekday Network Load", "", 10); // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background // colors (0xffffc0 and 0xffffe0) c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0); // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with // transparent background c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent); // Add a title to the y-axis c.yAxis().setTitle("Throughput (MBytes Per Hour)"); // Reserve 20 pixels at the top of the y-axis for the legend box c.yAxis().setTopMargin(20); // Set the x axis labels c.xAxis().setLabels(labels); // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth BarLayer layer = c.addBarLayer2(Chart.Side, 3); layer.addDataSet(data0, 0xff8080, "Server #1"); layer.addDataSet(data1, 0x80ff80, "Server #2"); layer.addDataSet(data2, 0x8080ff, "Server #3"); // 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\multibar.vb
Imports System Imports Microsoft.VisualBasic Imports ChartDirector Public Class multibar Implements DemoModule 'Name of demo module Public Function getName() As String Implements DemoModule.getName Return "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", "Thu", "Fri"} ' Create a XYChart object of size 400 x 240 pixels Dim c As XYChart = New XYChart(400, 240) ' Add a title to the chart using 10 pt Arial font c.addTitle(" Average Weekday Network Load", "", 10) ' Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors ' (0xffffc0 and 0xffffe0) c.setPlotArea(50, 25, 320, 180, &Hffffc0, &Hffffe0) ' Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with ' transparent background c.addLegend(55, 18, False, "", 8).setBackground(Chart.Transparent) ' Add a title to the y-axis c.yAxis().setTitle("Throughput (MBytes Per Hour)") ' Reserve 20 pixels at the top of the y-axis for the legend box c.yAxis().setTopMargin(20) ' Set the x axis labels c.xAxis().setLabels(labels) ' Add a multi-bar layer with 3 data sets and 3 pixels 3D depth Dim layer As BarLayer = c.addBarLayer2(Chart.Side, 3) layer.addDataSet(data0, &Hff8080, "Server #1") layer.addDataSet(data1, &H80ff80, "Server #2") layer.addDataSet(data2, &H8080ff, "Server #3") ' 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\CSharpWPFCharts\multibar.cs
using System; using ChartDirector; namespace CSharpWPFCharts { public class multibar : DemoModule { //Name of demo module public string getName() { return "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", "Thu", "Fri"}; // Create a XYChart object of size 400 x 240 pixels XYChart c = new XYChart(400, 240); // Add a title to the chart using 10 pt Arial font c.addTitle(" Average Weekday Network Load", "", 10); // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background // colors (0xffffc0 and 0xffffe0) c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0); // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with // transparent background c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent); // Add a title to the y-axis c.yAxis().setTitle("Throughput (MBytes Per Hour)"); // Reserve 20 pixels at the top of the y-axis for the legend box c.yAxis().setTopMargin(20); // Set the x axis labels c.xAxis().setLabels(labels); // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth BarLayer layer = c.addBarLayer2(Chart.Side, 3); layer.addDataSet(data0, 0xff8080, "Server #1"); layer.addDataSet(data1, 0x80ff80, "Server #2"); layer.addDataSet(data2, 0x8080ff, "Server #3"); // 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\multibar.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", "Thu", "Fri"}; // Create a XYChart object of size 400 x 240 pixels XYChart c = new XYChart(400, 240); // Add a title to the chart using 10 pt Arial font c.addTitle(" Average Weekday Network Load", "", 10); // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors // (0xffffc0 and 0xffffe0) c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0); // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with transparent // background c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent); // Add a title to the y-axis c.yAxis().setTitle("Throughput (MBytes Per Hour)"); // Reserve 20 pixels at the top of the y-axis for the legend box c.yAxis().setTopMargin(20); // Set the x axis labels c.xAxis().setLabels(labels); // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth BarLayer layer = c.addBarLayer2(Chart.Side, 3); layer.addDataSet(data0, 0xff8080, "Server #1"); layer.addDataSet(data1, 0x80ff80, "Server #2"); layer.addDataSet(data2, 0x8080ff, "Server #3"); // Output the chart WebChartViewer1.Image = c.makeWebImage(Chart.SVG); // Include tool tip for the chart WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", "title='{dataSetName} on {xLabel}: {value} MBytes/hour'"); } </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> </body> </html>

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\multibar.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", "Thu", "Fri"} ' Create a XYChart object of size 400 x 240 pixels Dim c As XYChart = New XYChart(400, 240) ' Add a title to the chart using 10 pt Arial font c.addTitle(" Average Weekday Network Load", "", 10) ' Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors ' (0xffffc0 and 0xffffe0) c.setPlotArea(50, 25, 320, 180, &Hffffc0, &Hffffe0) ' Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with transparent ' background c.addLegend(55, 18, False, "", 8).setBackground(Chart.Transparent) ' Add a title to the y-axis c.yAxis().setTitle("Throughput (MBytes Per Hour)") ' Reserve 20 pixels at the top of the y-axis for the legend box c.yAxis().setTopMargin(20) ' Set the x axis labels c.xAxis().setLabels(labels) ' Add a multi-bar layer with 3 data sets and 3 pixels 3D depth Dim layer As BarLayer = c.addBarLayer2(Chart.Side, 3) layer.addDataSet(data0, &Hff8080, "Server #1") layer.addDataSet(data1, &H80ff80, "Server #2") layer.addDataSet(data2, &H8080ff, "Server #3") ' Output the chart WebChartViewer1.Image = c.makeWebImage(Chart.SVG) ' Include tool tip for the chart WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _ "title='{dataSetName} on {xLabel}: {value} MBytes/hour'") End Sub </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> </body> </html>

[ASP.NET MVC - Controller] NetMvcCharts\Controllers\MultibarController.cs
using System; using System.Web.Mvc; using ChartDirector; namespace NetMvcCharts.Controllers { public class MultibarController : Controller { // // Default Action // public ActionResult Index() { ViewBag.Title = "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", "Thu", "Fri"}; // Create a XYChart object of size 400 x 240 pixels XYChart c = new XYChart(400, 240); // Add a title to the chart using 10 pt Arial font c.addTitle(" Average Weekday Network Load", "", 10); // Set the plot area at (50, 25) and of size 320 x 180. Use two alternative background colors // (0xffffc0 and 0xffffe0) c.setPlotArea(50, 25, 320, 180, 0xffffc0, 0xffffe0); // Add a legend box at (55, 18) using horizontal layout. Use 8 pt Arial font, with // transparent background c.addLegend(55, 18, false, "", 8).setBackground(Chart.Transparent); // Add a title to the y-axis c.yAxis().setTitle("Throughput (MBytes Per Hour)"); // Reserve 20 pixels at the top of the y-axis for the legend box c.yAxis().setTopMargin(20); // Set the x axis labels c.xAxis().setLabels(labels); // Add a multi-bar layer with 3 data sets and 3 pixels 3D depth BarLayer layer = c.addBarLayer2(Chart.Side, 3); layer.addDataSet(data0, 0xff8080, "Server #1"); layer.addDataSet(data1, 0x80ff80, "Server #2"); layer.addDataSet(data2, 0x8080ff, "Server #3"); // Output the chart viewer.Image = c.makeWebImage(Chart.SVG); // 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> <style> @ViewBag.Style </style> @Scripts.Render("~/Scripts/cdjcv.js") </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> @ViewBag.Title </div> <hr style="border:solid 1px #000080; background:#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>