Inter-Line Coloring

[JSP Version] jspdemo/linefill.jsp
<%@page import="ChartDirector.*, java.util.*" %>
<%
// The data for the line chart
double[] data0 = {70, 73, 80, 90, 95, 93, 82, 77, 82, 101, 111, 115};
double[] data1 = {90, 96, 89, 77, 82, 96, 109, 109, 99, 108, 96, 91};
double[] data2 = {58, 34, 25, 49, 64, 10, 16, 40, 25, 49, 40, 22};

// The labels for the line chart
String[] labels = {"2008-01", "2008-02", "2008-03", "2008-04", "2008-05", "2008-06", "2008-07",
    "2008-08", "2008-09", "2008-10", "2008-11", "2008-12"};

// Create a XYChart object of size 450 x 450 pixels
XYChart c = new XYChart(450, 450);

// Add a title to the chart using 15pt Arial Italic font.
TextBox title = c.addTitle("Inter-line Coloring", "Arial Italic", 15);

// Add a legend box where the top-center is anchored to the horizontal center of the chart, just
// under the title. Use horizontal layout and 10 points Arial Bold font, and transparent background
// and border. Use line style legend key.
LegendBox legendBox = c.addLegend(c.getWidth() / 2, title.getHeight(), false, "Arial Bold Italic",
    10);
legendBox.setBackground(Chart.Transparent, Chart.Transparent);
legendBox.setAlignment(Chart.TopCenter);
legendBox.setLineStyleKey();

// Tentatively set the plotarea at (70, 65) and of (chart_width - 100) x (chart_height - 110) in
// size. Use light grey (c0c0c0) border and horizontal and vertical grid lines.
PlotArea plotArea = c.setPlotArea(70, 65, c.getWidth() - 100, c.getHeight() - 110, -1, -1, 0xc0c0c0,
    0xc0c0c0, -1);

// Add a title to the y axis using 12pt Arial Bold Italic font
c.yAxis().setTitle("Axis Title Placeholder", "Arial Bold Italic", 12);

// Add a title to the x axis using 12pt Arial Bold Italic font
c.xAxis().setTitle("Axis Title Placeholder", "Arial Bold Italic", 12);

// Set the axes line width to 3 pixels
c.xAxis().setWidth(3);
c.yAxis().setWidth(3);

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

// Use 8 points Arial rotated by 90 degrees as the x-axis label font
c.xAxis().setLabelStyle("Arial", 8, Chart.TextColor, 90);

// Add a spline curve to the chart
SplineLayer layer0 = c.addSplineLayer(data0, 0xff0000, "Data Set 0");
layer0.setLineWidth(2);

// Add a normal line to the chart
LineLayer layer1 = c.addLineLayer(data1, 0x008800, "Data Set 1");
layer1.setLineWidth(2);

// Color the region between the above spline curve and normal line. Use the semi-transparent red
// (80ff000000) if the spline curve is higher than the normal line, otherwise use semi-transparent
// green (80008800)
c.addInterLineLayer(layer0.getLine(), layer1.getLine(), 0x80ff0000, 0x80008800);

// Add another normal line to the chart
LineLayer layer2 = c.addLineLayer(data2, 0x0000ff, "Data Set 2");
layer2.setLineWidth(2);

// Add a horizontal mark line to the chart at y = 40
Mark mark = c.yAxis().addMark(40, -1, "Threshold");
mark.setLineWidth(2);

// Set the mark line to purple (880088) dash line. Use white (ffffff) for the mark label.
mark.setMarkColor(c.dashLineColor(0x880088), 0xffffff);

// Put the mark label at the left side of the mark, with a purple (880088) background.
mark.setAlignment(Chart.Left);
mark.setBackground(0x880088);

// Color the region between the above normal line and mark line. Use the semi-transparent blue
// (800000ff) if the normal line is higher than the mark line, otherwise use semi-transparent purple
// (80880088)
c.addInterLineLayer(layer2.getLine(), mark.getLine(), 0x800000ff, 0x80880088);

// Layout the legend box, so we can get its height
c.layoutLegend();

// Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels from the
// left edge, just under the legend box, 25 pixels from the right edge, and 10 pixels from the
// bottom edge.
c.packPlotArea(10, legendBox.getTopY() + legendBox.getHeight(), c.getWidth() - 25, c.getHeight() -
    10);

// After determining the exact plot area position, we may adjust the legend box and the title
// positions so that they are centered relative to the plot area (instead of the chart)
legendBox.setPos(plotArea.getLeftX() + (plotArea.getWidth() - legendBox.getWidth()) / 2,
    legendBox.getTopY());
title.setPos(plotArea.getLeftX() + (plotArea.getWidth() - title.getWidth()) / 2, title.getTopY());

// 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} in {xLabel}: {value}'"));
%>
<!DOCTYPE html>
<html>
<head>
    <title>Inter-Line Coloring</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;">
        Inter-Line Coloring
    </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>