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msd2/tracking/piwik/vendor/szymach/c-pchart/doc/bar.md

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+# Drawing a bar chart
+
+[Reference](http://wiki.pchart.net/doc.chart.drawbarchart.html)
+
+```php
+require '/path/to/your/vendor/autoload.php';
+
+use CpChart\Chart\Data;
+use CpChart\Chart\Image;
+
+/* Create and populate the Data object */
+$data = new Data();
+$data->addPoints([13251, 4118, 3087, 1460, 1248, 156, 26, 9, 8], "Hits");
+$data->setAxisName(0, "Hits");
+$data->addPoints(["Firefox", "Chrome", "Internet Explorer", "Opera", "Safari", "Mozilla", "SeaMonkey", "Camino", "Lunascape"], "Browsers");
+$data->setSerieDescription("Browsers", "Browsers");
+$data->setAbscissa("Browsers");
+
+/* Create the Image object */
+$image = new Image(500, 500, $data);
+$image->drawGradientArea(0, 0, 500, 500, DIRECTION_VERTICAL, [
+    "StartR" => 240,
+    "StartG" => 240,
+    "StartB" => 240,
+    "EndR" => 180,
+    "EndG" => 180,
+    "EndB" => 180,
+    "Alpha" => 100
+]);
+$image->drawGradientArea(0, 0, 500, 500, DIRECTION_HORIZONTAL, [
+    "StartR" => 240,
+    "StartG" => 240,
+    "StartB" => 240,
+    "EndR" => 180,
+    "EndG" => 180,
+    "EndB" => 180,
+    "Alpha" => 20
+]);
+$image->setFontProperties(["FontName" => "pf_arma_five.ttf", "FontSize" => 6]);
+
+/* Draw the chart scale */
+$image->setGraphArea(100, 30, 480, 480);
+$image->drawScale([
+    "CycleBackground" => true,
+    "DrawSubTicks" => true,
+    "GridR" => 0,
+    "GridG" => 0,
+    "GridB" => 0,
+    "GridAlpha" => 10,
+    "Pos" => SCALE_POS_TOPBOTTOM
+]);
+
+/* Turn on shadow computing */
+$image->setShadow(true, ["X" => 1, "Y" => 1, "R" => 0, "G" => 0, "B" => 0, "Alpha" => 10]);
+
+/* Draw the chart */
+$image->drawBarChart(["DisplayPos" => LABEL_POS_INSIDE, "DisplayValues" => true, "Rounded" => true, "Surrounding" => 30]);
+
+/* Write the legend */
+$image->drawLegend(570, 215, ["Style" => LEGEND_NOBORDER, "Mode" => LEGEND_HORIZONTAL]);
+
+/* Render the picture (choose the best way) */
+$image->autoOutput("example.drawBarChart.vertical.png");
+```