Scatter Trend Chart

[File: phpdemo/scattertrend.php]
<?php
require_once("../lib/phpchartdir.php");

# The XY data of the first data series
$dataX0 = array(50, 55, 37, 24, 42, 49, 63, 72, 83, 59);
$dataY0 = array(3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3);

# The XY data of the second data series
$dataX1 = array(50, 55, 37, 24, 42, 49, 63, 72, 83, 59);
$dataY1 = array(1.6, 1.8, 0.8, 0.5, 1.3, 1.5, 2.3, 2.4, 2.9, 1.5);

# Tool tip formats for data points and trend lines
$scatterToolTip = "title='{dataSetName}: Response time at {x} TPS: {value} sec'";
$trendToolTip = "title='Slope = {slope|4} sec/TPS; Intercept = {intercept|4} sec'";

# Create a XYChart object of size 450 x 420 pixels
$c = new XYChart(450, 420);

# Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white background and a light grey
# border (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
# (0xc0c0c0)
$c->setPlotArea(55, 65, 350, 300, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);

# Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times Bold Italic
# font. Set the background and border color to Transparent.
$c->addLegend(50, 30, false, "Times New Roman Bold Italic", 12)->setBackground(Transparent);

# Add a title to the chart using 18 point Times Bold Itatic font.
$c->addTitle("Server Performance", "Times New Roman Bold Italic", 18);

# Add titles to the axes using 12pt Arial Bold Italic font
$c->yAxis->setTitle("Response Time (sec)", "Arial Bold Italic", 12);
$c->xAxis->setTitle("Server Load (TPS)", "Arial Bold Italic", 12);

# Set the axes line width to 3 pixels
$c->yAxis->setWidth(3);
$c->xAxis->setWidth(3);

# Add a scatter layer using (dataX0, dataY0)
$scatter1 = $c->addScatterLayer($dataX0, $dataY0, "Server AAA", DiamondSymbol, 11, 0x008000);
$scatter1->setHTMLImageMap("", "", $scatterToolTip);

# Add a trend line layer for (dataX0, dataY0)
$trend1 = $c->addTrendLayer2($dataX0, $dataY0, 0x008000);
$trend1->setLineWidth(3);
$trend1->setHTMLImageMap("", "", $trendToolTip);

# Add a scatter layer for (dataX1, dataY1)
$scatter2 = $c->addScatterLayer($dataX1, $dataY1, "Server BBB", TriangleSymbol, 9, 0x6666ff);
$scatter2->setHTMLImageMap("", "", $scatterToolTip);

# Add a trend line layer for (dataX1, dataY1)
$trend2 = $c->addTrendLayer2($dataX1, $dataY1, 0x6666ff);
$trend2->setLineWidth(3);
$trend2->setHTMLImageMap("", "", $trendToolTip);

# Output the chart
$viewer = new WebChartViewer("chart1");
$viewer->setChart($c, SVG);

# include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap(""));
?>

<!DOCTYPE html>
<html>
<head>
    <title>Scatter Trend 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;">
        Scatter Trend Chart
    </div>
    <hr style="border:solid 1px #000080; background:#000080" />
    <div style="font:10pt verdana; margin-bottom:1.5em">
        <a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a>
    </div>
    <!-- ****** Here is the chart image ****** -->
    <?php echo $viewer->renderHTML(); ?>
</body>
</html>