70 lines
2.2 KiB
PHP
70 lines
2.2 KiB
PHP
<?php
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require_once("../lib/phpchartdir.php");
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# The data for the chart
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$data0 = array(6, 12.5, 18.2, 15);
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$angles0 = array(45, 96, 169, 258);
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$size0 = array(41, 105, 12, 20);
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$data1 = array(18, 16, 11, 14);
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$angles1 = array(30, 210, 240, 310);
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$size1 = array(30, 45, 12, 90);
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# Create a PolarChart object of size 460 x 460 pixels
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$c = new PolarChart(460, 460);
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# Add a title to the chart at the top left corner using 15pts Arial Bold Italic font
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$c->addTitle2(TopLeft, "<*underline=2*>EM Field Strength", "arialbi.ttf", 15);
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# Set center of plot area at (230, 240) with radius 180 pixels
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$c->setPlotArea(230, 240, 180);
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# Use alternative light grey/dark grey circular background color
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$c->setPlotAreaBg(0xdddddd, 0xeeeeee);
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# Set the grid style to circular grid
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$c->setGridStyle(false);
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# Add a legend box at the top right corner of the chart using 9 pts Arial Bold font
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$legendObj = $c->addLegend(459, 0, true, "arialbd.ttf", 9);
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$legendObj->setAlignment(TopRight);
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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->setLinearScale(0, 360, 30);
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# Set the radial axis label format
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$radialAxisObj = $c->radialAxis();
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$radialAxisObj->setLabelFormat("{value} km");
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# Add a blue (0x9999ff) line layer to the chart using (data0, angle0)
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$layer0 = $c->addLineLayer($data0, 0x9999ff, "Cold Spot");
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$layer0->setAngles($angles0);
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# Disable the line by setting its width to 0, so only the symbols are visible
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$layer0->setLineWidth(0);
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# Use a circular data point symbol
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$layer0->setDataSymbol(CircleSymbol, 11);
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# Modulate the symbol size by size0 to produce a bubble chart effect
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$layer0->setSymbolScale($size0);
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# Add a red (0xff9999) line layer to the chart using (data1, angle1)
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$layer1 = $c->addLineLayer($data1, 0xff9999, "Hot Spot");
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$layer1->setAngles($angles1);
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# Disable the line by setting its width to 0, so only the symbols are visible
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$layer1->setLineWidth(0);
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# Use a circular data point symbol
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$layer1->setDataSymbol(CircleSymbol, 11);
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# Modulate the symbol size by size1 to produce a bubble chart effect
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$layer1->setSymbolScale($size1);
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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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