This example demonstrates using spline curves to join data points, title with soft lighting effect, as well as a number of chart formatting techniques.
[JSP Version] jspdemo/splineline.jsp
<%@page import="ChartDirector.*, java.util.*" %>
<%
// The data for the chart
double[] data0 = {32, 39, 23, 28, 41, 38, 26, 35, 29};
double[] data1 = {50, 55, 47, 34, 47, 53, 38, 40, 51};
// The labels for the chart
String[] labels = {"0", "1", "2", "3", "4", "5", "6", "7", "8"};
// Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd) background, black
// border, 1 pixel 3D border effect and rounded corners.
XYChart c = new XYChart(600, 300, 0xffdddd, 0x000000, 1);
c.setRoundedFrame();
//Set search path to current JSP directory for loading icon images
c.setSearchPath(getServletConfig().getServletContext(), request);
// Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff) background. Set
// horizontal and vertical grid lines to grey (cccccc).
c.setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
// Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial Bold font.
// Set the background and border color to Transparent.
c.addLegend(55, 32, false, "Arial Bold", 9).setBackground(Chart.Transparent);
// Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and includes
// embedded images for highlight. The text is white (ffffff) on a dark red (880000) background, with
// soft lighting effect from the right side.
c.addTitle(
"<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " +
"<*img=star.png*><*img=star.png*><*/*>", "Times New Roman Bold Italic", 15, 0xffffff
).setBackground(0x880000, -1, Chart.softLighting(Chart.Right));
// Add a title to the y axis
c.yAxis().setTitle("Energy Concentration (KJ per liter)");
// Set the labels on the x axis
c.xAxis().setLabels(labels);
// Add a title to the x axis using CMDL
c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*> Elapsed Time (hour)<*/*>");
// Set the axes width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);
// Add a spline layer to the chart
SplineLayer layer = c.addSplineLayer();
// Set the default line width to 2 pixels
layer.setLineWidth(2);
// Add a data set to the spline layer, using blue (0000c0) as the line color, with yellow (ffff00)
// circle symbols.
layer.addDataSet(data1, 0x0000c0, "Target Group").setDataSymbol(Chart.CircleSymbol, 9, 0xffff00);
// Add a data set to the spline layer, using brown (982810) as the line color, with pink (f040f0)
// diamond symbols.
layer.addDataSet(data0, 0x982810, "Control Group").setDataSymbol(Chart.DiamondSymbol, 11, 0xf040f0);
// Add a custom CDML text at the bottom right of the plot area as the logo
c.addText(575, 250,
"<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*><*font=Times New Roman Bold " +
"Italic,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(Chart.BottomRight);
// 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} at t = {xLabel} hour: {value} KJ/liter'"));
%>
<!DOCTYPE html>
<html>
<head>
<title>Spline Line 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;">
Spline Line 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>
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