ChartDirector 7.1 (.NET Edition)

Overlapping Bar Chart




This example demonstrates a multi-bar chart in which the bars within a cluster overlaps.

The overlapping effect is configured using BarLayer.setOverlapRatio. This method allows you to specify overlapping ratio and order. In this example, the overlapping ratio is 0.5, while the default overlapping order is used. The default order is that the first data set will stay on top of the second data set, and so on.

Source Code Listing

[Windows Forms - C# version] NetWinCharts\CSharpWinCharts\overlapbar.cs
using System; using ChartDirector; namespace CSharpChartExplorer { public class overlapbar : DemoModule { //Name of demo module public string getName() { return "Overlapping 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, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122}; double[] data1 = {122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270}; double[] data2 = {167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310}; string[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"}; // Create a XYChart object of size 580 x 280 pixels XYChart c = new XYChart(580, 280); // Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "Arial Bold Italic", 14); // Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background // colors (f8f8f8 and ffffff) c.setPlotArea(50, 50, 500, 200, 0xf8f8f8, 0xffffff); // Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with // transparent background. c.addLegend(50, 25, false, "Arial", 8).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); // Add a multi-bar layer with 3 data sets BarLayer layer = c.addBarLayer2(Chart.Side); layer.addDataSet(data0, 0xff8080, "Year 2003"); layer.addDataSet(data1, 0x80ff80, "Year 2004"); layer.addDataSet(data2, 0x8080ff, "Year 2005"); // Set 50% overlap between bars layer.setOverlapRatio(0.5); // Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)"); // Output the chart viewer.Chart = c; //include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", "title='{xLabel} Revenue on {dataSetName}: {value} millions'"); } } }

[Windows Forms - VB Version] NetWinCharts\VBNetWinCharts\overlapbar.vb
Imports System Imports Microsoft.VisualBasic Imports ChartDirector Public Class overlapbar Implements DemoModule 'Name of demo module Public Function getName() As String Implements DemoModule.getName Return "Overlapping 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, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122} Dim data1() As Double = {122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270} Dim data2() As Double = {167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310} Dim labels() As String = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", _ "Oct", "Nov", "Dec"} ' Create a XYChart object of size 580 x 280 pixels Dim c As XYChart = New XYChart(580, 280) ' Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "Arial Bold Italic", 14) ' Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background colors ' (f8f8f8 and ffffff) c.setPlotArea(50, 50, 500, 200, &Hf8f8f8, &Hffffff) ' Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with ' transparent background. c.addLegend(50, 25, False, "Arial", 8).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) ' Add a multi-bar layer with 3 data sets Dim layer As BarLayer = c.addBarLayer2(Chart.Side) layer.addDataSet(data0, &Hff8080, "Year 2003") layer.addDataSet(data1, &H80ff80, "Year 2004") layer.addDataSet(data2, &H8080ff, "Year 2005") ' Set 50% overlap between bars layer.setOverlapRatio(0.5) ' Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)") ' Output the chart viewer.Chart = c 'include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", _ "title='{xLabel} Revenue on {dataSetName}: {value} millions'") End Sub End Class

[WPF - C#] NetWPFCharts\CSharpWPFCharts\overlapbar.cs
using System; using ChartDirector; namespace CSharpWPFCharts { public class overlapbar : DemoModule { //Name of demo module public string getName() { return "Overlapping 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, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122}; double[] data1 = {122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270}; double[] data2 = {167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310}; string[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"}; // Create a XYChart object of size 580 x 280 pixels XYChart c = new XYChart(580, 280); // Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "Arial Bold Italic", 14); // Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background // colors (f8f8f8 and ffffff) c.setPlotArea(50, 50, 500, 200, 0xf8f8f8, 0xffffff); // Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with // transparent background. c.addLegend(50, 25, false, "Arial", 8).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); // Add a multi-bar layer with 3 data sets BarLayer layer = c.addBarLayer2(Chart.Side); layer.addDataSet(data0, 0xff8080, "Year 2003"); layer.addDataSet(data1, 0x80ff80, "Year 2004"); layer.addDataSet(data2, 0x8080ff, "Year 2005"); // Set 50% overlap between bars layer.setOverlapRatio(0.5); // Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)"); // Output the chart viewer.Chart = c; //include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", "title='{xLabel} Revenue on {dataSetName}: {value} millions'"); } } }

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\overlapbar.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, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122}; double[] data1 = {122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270}; double[] data2 = {167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310}; string[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"}; // Create a XYChart object of size 580 x 280 pixels XYChart c = new XYChart(580, 280); // Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "Arial Bold Italic", 14); // Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background colors // (f8f8f8 and ffffff) c.setPlotArea(50, 50, 500, 200, 0xf8f8f8, 0xffffff); // Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with transparent // background. c.addLegend(50, 25, false, "Arial", 8).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); // Add a multi-bar layer with 3 data sets BarLayer layer = c.addBarLayer2(Chart.Side); layer.addDataSet(data0, 0xff8080, "Year 2003"); layer.addDataSet(data1, 0x80ff80, "Year 2004"); layer.addDataSet(data2, 0x8080ff, "Year 2005"); // Set 50% overlap between bars layer.setOverlapRatio(0.5); // Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)"); // Output the chart WebChartViewer1.Image = c.makeWebImage(Chart.SVG); // Include tool tip for the chart WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", "title='{xLabel} Revenue on {dataSetName}: {value} millions'"); } </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\overlapbar.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, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122} Dim data1() As Double = {122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270} Dim data2() As Double = {167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310} Dim labels() As String = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", _ "Oct", "Nov", "Dec"} ' Create a XYChart object of size 580 x 280 pixels Dim c As XYChart = New XYChart(580, 280) ' Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "Arial Bold Italic", 14) ' Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background colors ' (f8f8f8 and ffffff) c.setPlotArea(50, 50, 500, 200, &Hf8f8f8, &Hffffff) ' Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with transparent ' background. c.addLegend(50, 25, False, "Arial", 8).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) ' Add a multi-bar layer with 3 data sets Dim layer As BarLayer = c.addBarLayer2(Chart.Side) layer.addDataSet(data0, &Hff8080, "Year 2003") layer.addDataSet(data1, &H80ff80, "Year 2004") layer.addDataSet(data2, &H8080ff, "Year 2005") ' Set 50% overlap between bars layer.setOverlapRatio(0.5) ' Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)") ' Output the chart WebChartViewer1.Image = c.makeWebImage(Chart.SVG) ' Include tool tip for the chart WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _ "title='{xLabel} Revenue on {dataSetName}: {value} millions'") 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\OverlapbarController.cs
using System; using System.Web.Mvc; using ChartDirector; namespace NetMvcCharts.Controllers { public class OverlapbarController : Controller { // // Default Action // public ActionResult Index() { ViewBag.Title = "Overlapping 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, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122}; double[] data1 = {122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270}; double[] data2 = {167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310}; string[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"}; // Create a XYChart object of size 580 x 280 pixels XYChart c = new XYChart(580, 280); // Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "Arial Bold Italic", 14); // Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background colors // (f8f8f8 and ffffff) c.setPlotArea(50, 50, 500, 200, 0xf8f8f8, 0xffffff); // Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with // transparent background. c.addLegend(50, 25, false, "Arial", 8).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); // Add a multi-bar layer with 3 data sets BarLayer layer = c.addBarLayer2(Chart.Side); layer.addDataSet(data0, 0xff8080, "Year 2003"); layer.addDataSet(data1, 0x80ff80, "Year 2004"); layer.addDataSet(data2, 0x8080ff, "Year 2005"); // Set 50% overlap between bars layer.setOverlapRatio(0.5); // Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)"); // Output the chart viewer.Image = c.makeWebImage(Chart.SVG); // Include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("", "", "title='{xLabel} Revenue on {dataSetName}: {value} millions'"); } } }

[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>