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

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+# Drawing a plot chart
+
+[Reference](http://wiki.pchart.net/doc.chart.drawplotchart.html)
+
+```php
+require '/path/to/your/vendor/autoload.php';
+
+use CpChart\Chart\Data;
+use CpChart\Chart\Image;
+
+/* Create and populate the Data object */
+$data = new Data();
+for ($i = 0; $i <= 20; $i++) {
+    $data->addPoints(rand(0, 20), "Probe 1");
+}
+for ($i = 0; $i <= 20; $i++) {
+    $data->addPoints(rand(0, 20), "Probe 2");
+}
+$data->setSerieShape("Probe 1", SERIE_SHAPE_FILLEDTRIANGLE);
+$data->setSerieShape("Probe 2", SERIE_SHAPE_FILLEDSQUARE);
+$data->setAxisName(0, "Temperatures");
+
+/* Create the Image object */
+$image = new Image(700, 230, $data);
+
+/* Turn off Antialiasing */
+$image->Antialias = false;
+
+/* Add a border to the picture */
+$image->drawRectangle(0, 0, 699, 229, ["R" => 0, "G" => 0, "B" => 0]);
+
+/* Write the chart title */
+$image->setFontProperties(["FontName" => "Forgotte.ttf", "FontSize" => 11]);
+$image->drawText(150, 35, "Average temperature", ["FontSize" => 20, "Align" => TEXT_ALIGN_BOTTOMMIDDLE]);
+
+/* Set the default font */
+$image->setFontProperties(["FontName" => "pf_arma_five.ttf", "FontSize" => 6]);
+
+/* Define the chart area */
+$image->setGraphArea(60, 40, 650, 200);
+
+/* Draw the scale */
+$scaleSettings = [
+    "XMargin" => 10,
+    "YMargin" => 10,
+    "Floating" => true,
+    "GridR" => 200,
+    "GridG" => 200,
+    "GridB" => 200,
+    "DrawSubTicks" => true,
+    "CycleBackground" => true
+];
+$image->drawScale($scaleSettings);
+
+/* Turn on Antialiasing */
+$image->Antialias = true;
+$image->setShadow(true, ["X" => 1, "Y" => 1, "R" => 0, "G" => 0, "B" => 0, "Alpha" => 10]);
+
+/* Draw the line chart */
+$image->drawPlotChart();
+
+/* Write the chart legend */
+$image->drawLegend(580, 20, ["Style" => LEGEND_NOBORDER, "Mode" => LEGEND_HORIZONTAL]);
+
+/* Render the picture (choose the best way) */
+$image->autoOutput("example.drawPlotChart.simple.png");
+```