Stacked Area Chart

[JSP Version] jspdemo/stackedarea.jsp
<%@page import="ChartDirector.*, java.util.*" %>
<%
// The data for the area chart
double[] data0 = {42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56, 56, 60, 70, 76,
    63, 67, 75, 64, 51};
double[] data1 = {50, 45, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58, 59, 73, 77,
    84, 82, 80, 84, 89};
double[] data2 = {61, 79, 85, 66, 53, 39, 24, 21, 37, 56, 37, 22, 21, 33, 13, 17, 4, 23, 16, 25, 9,
    10, 5, 7, 16};
String[] labels = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14",
    "15", "16", "17", "18", "19", "20", "21", "22", "23", "24"};

// Create a XYChart object of size 300 x 210 pixels. Set the background to pale yellow (0xffffc0)
// with a black border (0x0)
XYChart c = new XYChart(300, 210, 0xffffc0, 0x000000);

// Set the plotarea at (50, 30) and of size 240 x 140 pixels. Use white (0xffffff) background.
c.setPlotArea(50, 30, 240, 140).setBackground(0xffffff);

// Add a legend box at (50, 185) (below of plot area) using horizontal layout. Use 8pt Arial font
// with Transparent background.
c.addLegend(50, 185, false, "", 8).setBackground(Chart.Transparent);

// Add a title box to the chart using 8pt Arial Bold font, with yellow (0xffff40) background and a
// black border (0x0)
c.addTitle("Sales Volume", "Arial Bold", 8).setBackground(0xffff40, 0);

// Set the y axis label format to US$nnnn
c.yAxis().setLabelFormat("US${value}");

// Set the labels on the x axis.
c.xAxis().setLabels(labels);

// Display 1 out of 2 labels on the x-axis. Show minor ticks for remaining labels.
c.xAxis().setLabelStep(2, 1);

// Add an stack area layer with three data sets
AreaLayer layer = c.addAreaLayer2(Chart.Stack);
layer.addDataSet(data0, 0x4040ff, "Store #1");
layer.addDataSet(data1, 0xff4040, "Store #2");
layer.addDataSet(data2, 0x40ff40, "Store #3");

// 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='{dataSetName} sales at hour {xLabel}: US${value}K'"));
%>
<!DOCTYPE html>
<html>
<head>
    <title>Stacked Area Chart</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;">
        Stacked Area Chart
    </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>