
This example demonstrates loading external image files as data symbols by using DataSet.setDataSymbol2.
ChartDirector 5.1 (Java Edition)
Custom Symbols
Source Code Listing
<%@page import="ChartDirector.*" %> <% // The data for the chart double[] data0 = {600, 800, 1200, 1500, 1800, 1900, 2000, 1950}; double[] data1 = {300, 450, 500, 1000, 1500, 1600, 1650, 1600}; // The labels for the chart String[] labels = {"1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002"}; // Create a XYChart object of size 450 x 250 pixels, with a pale yellow (0xffffc0) // background, a black border, and 1 pixel 3D border effect. XYChart c = new XYChart(450, 250, 0xffffc0, 0, 1); //Set search path to current JSP directory for loading icon images c.setSearchPath(getServletConfig().getServletContext(), request); // Set the plotarea at (60, 45) and of size 360 x 170 pixels, using white (0xffffff) // as the plot area background color. Turn on both horizontal and vertical grid lines // with light grey color (0xc0c0c0) c.setPlotArea(60, 45, 360, 170, 0xffffff, -1, -1, 0xc0c0c0, -1); // Add a legend box at (60, 20) (top of the chart) with horizontal layout. Use 8 pts // Arial Bold font. Set the background and border color to Transparent. c.addLegend(60, 20, false, "Arial Bold", 8).setBackground(Chart.Transparent); // Add a title to the chart using 12 pts Arial Bold/white font. Use a 1 x 2 bitmap // pattern as the background. c.addTitle("Information Resource Usage", "Arial Bold", 12, 0xffffff).setBackground( c.patternColor(new int[]{0x000040, 0x000080}, 2)); // Set the labels on the x axis c.xAxis().setLabels(labels); // Reserve 8 pixels margins at both side of the x axis to avoid the first and last // symbols drawing outside of the plot area c.xAxis().setMargin(8, 8); // Add a title to the y axis c.yAxis().setTitle("Population"); // Add a line layer to the chart LineLayer layer = c.addLineLayer2(); // Add the first line using small_user.png as the symbol. layer.addDataSet(data0, 0xcf4040, "Users").setDataSymbol2("small_user.png"); // Add the first line using small_computer.png as the symbol. layer.addDataSet(data1, 0x40cf40, "Computers").setDataSymbol2("small_computer.png"); // Set the line width to 3 pixels layer.setLineWidth(3); // Output the chart String chart1URL = c.makeSession(request, "chart1"); // Include tool tip for the chart String imageMap1 = c.getHTMLImageMap("", "", "title='Number of {dataSetName} at {xLabel}: {value}'"); %> <html> <body style="margin:5px 0px 0px 5px"> <div style="font-size:18pt; font-family:verdana; font-weight:bold"> Custom Symbols </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?"+chart1URL)%>' usemap="#map1" border="0"> <map name="map1"><%=imageMap1%></map> </body> </html> |
import java.awt.*; import java.awt.event.*; import javax.swing.*; import ChartDirector.*; public class customsymbolline implements DemoModule { //Name of demo program public String toString() { return "Custom Symbols"; } //Number of charts produced in this demo public int getNoOfCharts() { return 1; } //Main code for creating charts public void createChart(ChartViewer viewer, int index) { // The data for the chart double[] data0 = {600, 800, 1200, 1500, 1800, 1900, 2000, 1950}; double[] data1 = {300, 450, 500, 1000, 1500, 1600, 1650, 1600}; // The labels for the chart String[] labels = {"1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002"}; // Create a XYChart object of size 450 x 250 pixels, with a pale yellow // (0xffffc0) background, a black border, and 1 pixel 3D border effect. XYChart c = new XYChart(450, 250, 0xffffc0, 0, 1); // Set the plotarea at (60, 45) and of size 360 x 170 pixels, using white // (0xffffff) as the plot area background color. Turn on both horizontal and // vertical grid lines with light grey color (0xc0c0c0) c.setPlotArea(60, 45, 360, 170, 0xffffff, -1, -1, 0xc0c0c0, -1); // Add a legend box at (60, 20) (top of the chart) with horizontal layout. // Use 8 pts Arial Bold font. Set the background and border color to // Transparent. c.addLegend(60, 20, false, "Arial Bold", 8).setBackground(Chart.Transparent); // Add a title to the chart using 12 pts Arial Bold/white font. Use a 1 x 2 // bitmap pattern as the background. c.addTitle("Information Resource Usage", "Arial Bold", 12, 0xffffff ).setBackground(c.patternColor(new int[]{0x000040, 0x000080}, 2)); // Set the labels on the x axis c.xAxis().setLabels(labels); // Reserve 8 pixels margins at both side of the x axis to avoid the first and // last symbols drawing outside of the plot area c.xAxis().setMargin(8, 8); // Add a title to the y axis c.yAxis().setTitle("Population"); // Add a line layer to the chart LineLayer layer = c.addLineLayer2(); // Add the first line using small_user.png as the symbol. layer.addDataSet(data0, 0xcf4040, "Users").setDataSymbol2("small_user.png"); // Add the first line using small_computer.png as the symbol. layer.addDataSet(data1, 0x40cf40, "Computers").setDataSymbol2( "small_computer.png"); // Set the line width to 3 pixels layer.setLineWidth(3); // Output the chart viewer.setChart(c); //include tool tip for the chart viewer.setImageMap(c.getHTMLImageMap("clickable", "", "title='Number of {dataSetName} at {xLabel}: {value}'")); } //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 customsymbolline(); //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); // Create the chart and put them in the content pane ChartViewer viewer = new ChartViewer(); demo.createChart(viewer, 0); frame.getContentPane().add(viewer); // Display the window frame.pack(); frame.setVisible(true); } } |