# Drawing a polar chart [Reference](http://wiki.pchart.net/doc.draw.polar.html) ```php require '/path/to/your/vendor/autoload.php'; use CpChart\Chart\Radar; use CpChart\Data; use CpChart\Image; /* Create and populate the Data object */ $data = new Data(); $data->addPoints([10, 20, 30, 40, 50, 60, 70, 80, 90], "ScoreA"); $data->addPoints([20, 40, 50, 12, 10, 30, 40, 50, 60], "ScoreB"); $data->setSerieDescription("ScoreA", "Coverage A"); $data->setSerieDescription("ScoreB", "Coverage B"); /* Define the absissa serie */ $data->addPoints([40, 80, 120, 160, 200, 240, 280, 320, 360], "Coord"); $data->setAbscissa("Coord"); /* Create the Image object */ $image = new Image(700, 230, $data); /* Draw a solid background */ $settings = ["R" => 179, "G" => 217, "B" => 91, "Dash" => 1, "DashR" => 199, "DashG" => 237, "DashB" => 111]; $image->drawFilledRectangle(0, 0, 700, 230, $settings); /* Overlay some gradient areas */ $settings = ["StartR" => 194, "StartG" => 231, "StartB" => 44, "EndR" => 43, "EndG" => 107, "EndB" => 58, "Alpha" => 50]; $image->drawGradientArea(0, 0, 700, 230, DIRECTION_VERTICAL, $settings); $image->drawGradientArea(0, 0, 700, 20, DIRECTION_VERTICAL, [ "StartR" => 0, "StartG" => 0, "StartB" => 0, "EndR" => 50, "EndG" => 50, "EndB" => 50, "Alpha" => 100 ]); /* Add a border to the picture */ $image->drawRectangle(0, 0, 699, 229, ["R" => 0, "G" => 0, "B" => 0]); /* Write the picture title */ $image->setFontProperties(["FontName" => "Silkscreen.ttf", "FontSize" => 6]); $image->drawText(10, 13, "pRadar - Draw polar charts", ["R" => 255, "G" => 255, "B" => 255]); /* Set the default font properties */ $image->setFontProperties(["FontName" => "Forgotte.ttf", "FontSize" => 10, "R" => 80, "G" => 80, "B" => 80]); /* Enable shadow computing */ $image->setShadow(true, ["X" => 2, "Y" => 2, "R" => 0, "G" => 0, "B" => 0, "Alpha" => 10]); /* Create the pRadar object */ $radarChart = new Radar(); /* Draw a polar chart */ $image->setGraphArea(10, 25, 340, 225); $options = ["BackgroundGradient" => [ "StartR" => 255, "StartG" => 255, "StartB" => 255, "StartAlpha" => 100, "EndR" => 207, "EndG" => 227, "EndB" => 125, "EndAlpha" => 50 ]]; $radarChart->drawPolar($image, $data, $options); /* Draw a polar chart */ $image->setGraphArea(350, 25, 690, 225); $options = [ "LabelPos" => RADAR_LABELS_HORIZONTAL, "BackgroundGradient" => [ "StartR" => 255, "StartG" => 255, "StartB" => 255, "StartAlpha" => 50, "EndR" => 32, "EndG" => 109, "EndB" => 174, "EndAlpha" => 30 ], "AxisRotation" => 0, "DrawPoly" => true, "PolyAlpha" => 50 ]; $radarChart->drawPolar($image, $data, $options); /* Write the chart legend */ $image->setFontProperties(["FontName" => "pf_arma_five.ttf", "FontSize" => 6]); $image->drawLegend(270, 205, ["Style" => LEGEND_BOX, "Mode" => LEGEND_HORIZONTAL]); /* Render the picture (choose the best way) */ $image->autoOutput("example.polar.png"); ```