ChartDirector 7.0 (Java Edition)

Symbol Line Chart (2)




This example demonstrates using symbols to represent data points and using gradient color for plot area background.

Source Code Listing

[JSP Version] jspdemo/symbolline2.jsp
<%@page import="ChartDirector.*, java.util.*" %> <% // The data for the line chart double[] data0 = {42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42}; double[] data1 = {65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78}; double[] data2 = {36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24}; String[] labels = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; // Create a XYChart object of size 600 x 375 pixels XYChart c = new XYChart(600, 375); // Add a title to the chart using 18pt Times Bold Italic font c.addTitle("Product Line Global Revenue", "Times New Roman Bold Italic", 18); // Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical gradient color from // light blue (f9f9ff) to sky blue (aaccff) as background. Set border to transparent and grid lines // to white (ffffff). c.setPlotArea(50, 55, 500, 280, c.linearGradientColor(0, 55, 0, 335, 0xf9fcff, 0xaaccff), -1, Chart.Transparent, 0xffffff); // Add a legend box at (50, 28) using horizontal layout. Use 10pt Arial Bold as font, with // transparent background. c.addLegend(50, 28, false, "Arial Bold", 10).setBackground(Chart.Transparent); // Set the x axis labels c.xAxis().setLabels(labels); // Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the guideline // when putting ticks on the y-axis. c.yAxis().setTickDensity(30); // Set axis label style to 8pt Arial Bold c.xAxis().setLabelStyle("Arial Bold", 8); c.yAxis().setLabelStyle("Arial Bold", 8); // Set axis line width to 2 pixels c.xAxis().setWidth(2); c.yAxis().setWidth(2); // Add axis title using 10pt Arial Bold Italic font c.yAxis().setTitle("Revenue in USD millions", "Arial Bold Italic", 10); // Add a line layer to the chart LineLayer layer = c.addLineLayer2(); // Set the line width to 3 pixels layer.setLineWidth(3); // Add the three data sets to the line layer, using circles, diamands and X shapes as symbols layer.addDataSet(data0, 0xff0000, "Quantum Computer").setDataSymbol(Chart.CircleSymbol, 9); layer.addDataSet(data1, 0x00ff00, "Atom Synthesizer").setDataSymbol(Chart.DiamondSymbol, 11); layer.addDataSet(data2, 0xff6600, "Proton Cannon").setDataSymbol(Chart.Cross2Shape(), 11); // Output the chart WebChartViewer viewer = new WebChartViewer(request, "chart1"); viewer.setChart(c, Chart.SVG); // Include tool tip for the chart viewer.setImageMap(c.getHTMLImageMap("", "", "title='Revenue of {dataSetName} in {xLabel}: US$ {value}M'")); %> <!DOCTYPE html> <html> <head> <title>Symbol Line Chart (2)</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> Symbol Line Chart (2) </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a> </div> <!-- ****** Here is the chart image ****** --> <%= viewer.renderHTML(response) %> </body> </html>