ChartDirector 7.0 (PHP Edition)

Black Horizontal Linear Meters


          

This example demonstrates horizontal bar meters in a black coloring scheme.

Source Code Listing

[File: phpdemo/blackhlinearmeter.php]
<?php require_once("../lib/phpchartdir.php"); function createChart($viewer, $chartIndex) { # The value to display on the meter $value = 75.35; # Create a LinearMeter object of size 250 x 75 pixels with black background and rounded corners $m = new LinearMeter(250, 75, 0x000000); $m->setRoundedFrame(Transparent); # Set the default text and line colors to white (0xffffff) $m->setColor(TextColor, 0xffffff); $m->setColor(LineColor, 0xffffff); # Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale # labels are located on the top (implies horizontal meter) $m->setMeter(14, 23, 218, 20, Top); # Set meter scale from 0 - 100, with a tick every 10 units $m->setScale(0, 100, 10); # The tick line width to 1 pixel $m->setLineWidth(0, 1); # Demostrate different types of color scales and putting them at different positions $smoothColorScale = array(0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000); $stepColorScale = array(0, 0x00cc00, 50, 0xeecc00, 80, 0xdd0000, 100); $highLowColorScale = array(0, 0x0000ff, 70, Transparent, 100, 0xff0000); if ($chartIndex == 0) { # Add the smooth color scale at the default position $m->addColorScale($smoothColorScale); } else if ($chartIndex == 1) { # Add the smooth color scale starting at y = 23 (top of scale) with zero width and ending at # y = 23 with 20 pixels width $m->addColorScale($smoothColorScale, 23, 0, 23, 20); } else if ($chartIndex == 2) { # Add the high low scale at the default position $m->addColorScale($highLowColorScale); } else if ($chartIndex == 3) { # Add the smooth color scale starting at y = 33 (center of scale) with zero width and ending # at y = 23 with 20 pixels width $m->addColorScale($smoothColorScale, 33, 0, 23, 20); } else if ($chartIndex == 4) { # Add the step color scale at the default position $m->addColorScale($stepColorScale); } else { # Add the smooth color scale starting at y = 43 (bottom of scale) with zero width and ending # at y = 23 with 20 pixels width $m->addColorScale($smoothColorScale, 43, 0, 23, 20); } # Add a blue (0x0000cc) pointer with white (0xffffff) border at the specified value $m->addPointer($value, 0x0000cc, 0xffffff); # Add a label left aligned to (10, 61) using 8pt Arial Bold font $m->addText(10, 61, "Temperature C", "Arial Bold", 8, TextColor, Left); # Add a text box right aligned to (235, 61). Display the value using white (0xffffff) 8pt Arial # Bold font on a black (0x000000) background with depressed grey (0x444444) rounded border. $t = $m->addText(235, 61, $m->formatValue($value, "2"), "Arial Bold", 8, 0xffffff, Right); $t->setBackground(0x000000, 0x444444, -1); $t->setRoundedCorners(3); # Output the chart $viewer->setChart($m, SVG); } # This example includes 6 charts $viewers = array(); for ($i = 0; $i < 6; ++$i) { $viewers[$i] = new WebChartViewer("chart$i"); createChart($viewers[$i], $i); } ?> <!DOCTYPE html> <html> <head> <title>Black Horizontal Linear Meters</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> Black Horizontal Linear Meters </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a> </div> <!-- ****** Here are the chart images ****** --> <?php for ($i = 0; $i < count($viewers); ++$i) { echo $viewers[$i]->renderHTML(), " "; } ?> </body> </html>