dualxaxis.php
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<?php
require_once("../lib/phpchartdir.php");
# The data for the chart
$data0 = array(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);
$data1 = array(50, 55, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58, 59, 73, 77, 84,
82, 80, 84, 98);
# The labels for the bottom x axis. Note the "-" means a minor tick.
$labels0 = array("0\nJun 4", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13",
"14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "0\nJun 5");
# The labels for the top x axis. Note that "-" means a minor tick.
$labels1 = array("Jun 3\n12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
"Jun 4\n0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12");
# Create a XYChart object of size 310 x 310 pixels
$c = new XYChart(310, 310);
# Set the plotarea at (50, 50) and of size 200 x 200 pixels
$c->setPlotArea(50, 50, 200, 200);
# Add a title to the primary (left) y axis
$c->yAxis->setTitle("US Dollars");
# Set the tick length to -4 pixels (-ve means ticks inside the plot area)
$c->yAxis->setTickLength(-4);
# Add a title to the secondary (right) y axis
$c->yAxis2->setTitle("HK Dollars (1 USD = 7.8 HKD)");
# Set the tick length to -4 pixels (-ve means ticks inside the plot area)
$c->yAxis2->setTickLength(-4);
# Synchronize the y-axis such that y2 = 7.8 x y1
$c->syncYAxis(7.8);
# Add a title to the bottom x axis
$c->xAxis->setTitle("Hong Kong Time");
# Set the labels on the x axis.
$c->xAxis->setLabels($labels0);
# Display 1 out of 3 labels on the x-axis. Show minor ticks for remaining labels.
$c->xAxis->setLabelStep(3, 1);
# Set the major tick length to -4 pixels and minor tick length to -2 pixels (-ve means ticks inside
# the plot area)
$c->xAxis->setTickLength2(-4, -2);
# Set the distance between the axis labels and the axis to 6 pixels
$c->xAxis->setLabelGap(6);
# Add a title to the top x-axis
$c->xAxis2->setTitle("New York Time");
# Set the labels on the x axis.
$c->xAxis2->setLabels($labels1);
# Display 1 out of 3 labels on the x-axis. Show minor ticks for remaining labels.
$c->xAxis2->setLabelStep(3, 1);
# Set the major tick length to -4 pixels and minor tick length to -2 pixels (-ve means ticks inside
# the plot area)
$c->xAxis2->setTickLength2(-4, -2);
# Set the distance between the axis labels and the axis to 6 pixels
$c->xAxis2->setLabelGap(6);
# Add a line layer to the chart with a line width of 2 pixels
$c->addLineLayer($data0, -1, "Red Transactions")->setLineWidth(2);
# Add an area layer to the chart with no area boundary line
$c->addAreaLayer($data1, -1, "Green Transactions")->setLineWidth(0);
# Output the chart
$viewer = new WebChartViewer("chart1");
$viewer->setChart($c, SVG);
# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "",
"title='{dataSetName}\nHKT Jun {=3.5+{x}/24|0} {={x}%24}:00 (NYT Jun {=3+{x}/24|0} ".
"{=({x}+12)%24}:00)\nHKD {={value}*7.8} (USD {value})'"));
?>
<!DOCTYPE html>
<html>
<head>
<title>Dual X-Axis</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;">
Dual X-Axis
</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>
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