





This example demonstrates the effects of different bar gaps configured using BarLayer.setBarGap.
ChartDirector 6.1 (Java Edition)
Bar Gap
Source Code Listing
<%@page import="ChartDirector.*" %> <%@page import="javax.servlet.http.*" %> <%! // A simple structure to represent a chart image with an image map private static class ImageWithHotSpot { String imageURL; String imageMap; } // Function to create the demo charts ImageWithHotSpot createChart(HttpServletRequest request, int chartIndex) { double bargap = chartIndex * 0.25 - 0.25; // The data for the bar chart double[] data = {100, 125, 245, 147, 67}; // The labels for the bar chart String[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"}; // Create a XYChart object of size 150 x 150 pixels XYChart c = new XYChart(150, 150); // Set the plotarea at (27, 20) and of size 120 x 100 pixels c.setPlotArea(27, 20, 120, 100); // Set the labels on the x axis c.xAxis().setLabels(labels); if (bargap >= 0) { // Add a title to display to bar gap using 8pt Arial font c.addTitle(" Bar Gap = " + bargap, "Arial", 8); } else { // Use negative value to mean TouchBar c.addTitle(" Bar Gap = TouchBar", "Arial", 8); bargap = Chart.TouchBar; } // Add a bar chart layer using the given data and set the bar gap c.addBarLayer(data).setBarGap(bargap); // Output the chart ImageWithHotSpot ret = new ImageWithHotSpot(); ret.imageURL = c.makeSession(request, "chart" + chartIndex); // Include tool tip for the chart ret.imageMap = c.getHTMLImageMap("", "", "title='Production on {xLabel}: {value} kg'"); return ret; } %> <% ImageWithHotSpot chart0 = createChart(request, 0); ImageWithHotSpot chart1 = createChart(request, 1); ImageWithHotSpot chart2 = createChart(request, 2); ImageWithHotSpot chart3 = createChart(request, 3); ImageWithHotSpot chart4 = createChart(request, 4); ImageWithHotSpot chart5 = createChart(request, 5); %> <html> <body style="margin:5px 0px 0px 5px"> <div style="font-size:18pt; font-family:verdana; font-weight:bold"> Bar Gap </div> <hr color="#000080"> <div style="font-size:10pt; font-family:verdana; margin-bottom:1.5em"> <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a> </div> <img src='<%=response.encodeURL("getchart.jsp?"+chart0.imageURL)%>' usemap="#map0" border="0"> <map name="map0"><%=chart0.imageMap%></map> <img src='<%=response.encodeURL("getchart.jsp?"+chart1.imageURL)%>' usemap="#map1" border="0"> <map name="map1"><%=chart1.imageMap%></map> <img src='<%=response.encodeURL("getchart.jsp?"+chart2.imageURL)%>' usemap="#map2" border="0"> <map name="map2"><%=chart2.imageMap%></map> <img src='<%=response.encodeURL("getchart.jsp?"+chart3.imageURL)%>' usemap="#map3" border="0"> <map name="map3"><%=chart3.imageMap%></map> <img src='<%=response.encodeURL("getchart.jsp?"+chart4.imageURL)%>' usemap="#map4" border="0"> <map name="map4"><%=chart4.imageMap%></map> <img src='<%=response.encodeURL("getchart.jsp?"+chart5.imageURL)%>' usemap="#map5" border="0"> <map name="map5"><%=chart5.imageMap%></map> </body> </html> |
import java.awt.*; import java.awt.event.*; import javax.swing.*; import ChartDirector.*; public class gapbar implements DemoModule { //Name of demo program public String toString() { return "Bar Gap"; } //Number of charts produced in this demo public int getNoOfCharts() { return 6; } //Main code for creating charts public void createChart(ChartViewer viewer, int chartIndex) { double bargap = chartIndex * 0.25 - 0.25; // The data for the bar chart double[] data = {100, 125, 245, 147, 67}; // The labels for the bar chart String[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"}; // Create a XYChart object of size 150 x 150 pixels XYChart c = new XYChart(150, 150); // Set the plotarea at (27, 20) and of size 120 x 100 pixels c.setPlotArea(27, 20, 120, 100); // Set the labels on the x axis c.xAxis().setLabels(labels); if (bargap >= 0) { // Add a title to display to bar gap using 8pt Arial font c.addTitle(" Bar Gap = " + bargap, "Arial", 8); } else { // Use negative value to mean TouchBar c.addTitle(" Bar Gap = TouchBar", "Arial", 8); bargap = Chart.TouchBar; } // Add a bar chart layer using the given data and set the bar gap c.addBarLayer(data).setBarGap(bargap); // Output the chart viewer.setChart(c); //include tool tip for the chart viewer.setImageMap(c.getHTMLImageMap("clickable", "", "title='Production on {xLabel}: {value} kg'")); } //Allow this module to run as standalone program for easy testing public static void main(String[] args) { //Instantiate an instance of this demo module DemoModule demo = new gapbar(); //Create and set up the main window JFrame frame = new JFrame(demo.toString()); frame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) {System.exit(0);} }); frame.getContentPane().setBackground(Color.white); frame.getContentPane().setLayout(new FlowLayout(FlowLayout.LEFT)); frame.setSize(800, 450); // Create the charts and put them in the content pane for (int i = 0; i < demo.getNoOfCharts(); ++i) { ChartViewer viewer = new ChartViewer(); demo.createChart(viewer, i); frame.getContentPane().add(viewer); } // Display the window frame.setVisible(true); } } |