59 lines
2.1 KiB
PHP
59 lines
2.1 KiB
PHP
<?php
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require_once("../lib/phpchartdir.php");
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# Data for the chart
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$data0 = array(5, 3, 10, 4, 3, 5, 2, 5);
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$data1 = array(12, 6, 17, 6, 7, 9, 4, 7);
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$data2 = array(17, 7, 22, 7, 18, 13, 5, 11);
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$angles = array(0, 45, 90, 135, 180, 225, 270, 315);
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$labels = array("North", "North\nEast", "East", "South\nEast", "South",
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"South\nWest", "West", "North\nWest");
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# Create a PolarChart object of size 460 x 500 pixels, with a grey (e0e0e0)
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# background and a 1 pixel 3D border
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$c = new PolarChart(460, 500, 0xe0e0e0, 0x000000, 1);
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# Add a title to the chart at the top left corner using 15pts Arial Bold Italic font.
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# Use white text on deep blue background.
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$textBoxObj = $c->addTitle("Wind Direction", "arialbi.ttf", 15, 0xffffff);
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$textBoxObj->setBackground(0x000080);
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$legendBox = $c->addLegend(230, 35, false, "arialbd.ttf", 9);
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$legendBox->setAlignment(TopCenter);
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$legendBox->setBackground(Transparent, Transparent, 1);
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$legendBox->addKey("5 m/s or above", 0xff3333);
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$legendBox->addKey("1 - 5 m/s", 0x33ff33);
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$legendBox->addKey("less than 1 m/s", 0x3333ff);
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# Set plot area center at (230, 280) with radius 180 pixels and white background
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$c->setPlotArea(230, 280, 180, 0xffffff);
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# Set the grid style to circular grid
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$c->setGridStyle(false);
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# Set angular axis as 0 - 360, with a spoke every 30 units
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$angularAxisObj = $c->angularAxis();
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$angularAxisObj->setLinearScale2(0, 360, $labels);
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for($i = 0; $i < count($angles); ++$i) {
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$angularAxisObj = $c->angularAxis();
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$angularAxisObj->addZone($angles[$i] - 10, $angles[$i] + 10, 0, $data0[$i],
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0x3333ff, 0);
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$angularAxisObj = $c->angularAxis();
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$angularAxisObj->addZone($angles[$i] - 10, $angles[$i] + 10, $data0[$i], $data1[
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$i], 0x33ff33, 0);
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$angularAxisObj = $c->angularAxis();
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$angularAxisObj->addZone($angles[$i] - 10, $angles[$i] + 10, $data1[$i], $data2[
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$i], 0xff3333, 0);
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}
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# Add an Transparent invisible layer to ensure the axis is auto-scaled using the data
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$c->addLineLayer($data2, Transparent);
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# output the chart
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header("Content-type: image/png");
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print($c->makeChart2(PNG));
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?>
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