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

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+# Drawing a stock chart
+
+[Reference](http://wiki.pchart.net/doc.stocks.drawstockchart.html)
+
+```php
+require '/path/to/your/vendor/autoload.php';
+
+use CpChart\Chart\Data;
+use CpChart\Chart\Image;
+use CpChart\Chart\Stock;
+
+/* Create and populate the Data object */
+$data = new Data();
+$data->addPoints([34, 55, 15, 62, 38, 42], "Open");
+$data->addPoints([42, 25, 40, 38, 49, 36], "Close");
+$data->addPoints([27, 14, 12, 25, 32, 32], "Min");
+$data->addPoints([45, 59, 47, 65, 64, 48], "Max");
+$data->setAxisDisplay(0, AXIS_FORMAT_CURRENCY, "$");
+$data->addPoints(["8h", "10h", "12h", "14h", "16h", "18h"], "Time");
+$data->setAbscissa("Time");
+
+/* Create the Image object */
+$image = new Image(700, 230, $data);
+
+/* Draw the background */
+$settings = ["R" => 170, "G" => 183, "B" => 87, "Dash" => 1, "DashR" => 190, "DashG" => 203, "DashB" => 107];
+$image->drawFilledRectangle(0, 0, 700, 230, $settings);
+
+/* Overlay with a gradient */
+$settings = ["StartR" => 219, "StartG" => 231, "StartB" => 139, "EndR" => 1, "EndG" => 138, "EndB" => 68, "Alpha" => 50];
+$image->drawGradientArea(0, 0, 700, 230, DIRECTION_VERTICAL, $settings);
+
+/* Draw the border */
+$image->drawRectangle(0, 0, 699, 229, ["R" => 0, "G" => 0, "B" => 0]);
+
+/* Write the title */
+$image->setFontProperties(["FontName" => "Forgotte.ttf", "FontSize" => 11]);
+$image->drawText(60, 45, "Stock price", ["FontSize" => 28, "Align" => TEXT_ALIGN_BOTTOMLEFT]);
+
+/* Draw the 1st scale */
+$image->setGraphArea(60, 60, 450, 190);
+$image->drawFilledRectangle(60, 60, 450, 190, [
+    "R" => 255,
+    "G" => 255,
+    "B" => 255,
+    "Surrounding" => -200,
+    "Alpha" => 10
+]);
+$image->drawScale(["DrawSubTicks" => true, "CycleBackground" => true]);
+
+/* Draw the 1st stock chart */
+$mystockChart = new Stock($image, $data);
+$image->setShadow(true, ["X" => 1, "Y" => 1, "R" => 0, "G" => 0, "B" => 0, "Alpha" => 30]);
+$mystockChart->drawStockChart();
+
+/* Reset the display mode because of the graph small size */
+$data->setAxisDisplay(0, AXIS_FORMAT_DEFAULT);
+
+/* Draw the 2nd scale */
+$image->setShadow(false);
+$image->setGraphArea(500, 60, 670, 190);
+$image->drawFilledRectangle(500, 60, 670, 190, [
+    "R" => 255,
+    "G" => 255,
+    "B" => 255,
+    "Surrounding" => -200,
+    "Alpha" => 10
+]);
+$image->drawScale(["Pos" => SCALE_POS_TOPBOTTOM, "DrawSubTicks" => true]);
+
+/* Draw the 2nd stock chart */
+$mystockChart = new Stock($image, $data);
+$image->setShadow(true, ["X" => 1, "Y" => 1, "R" => 0, "G" => 0, "B" => 0, "Alpha" => 30]);
+$mystockChart->drawStockChart();
+
+/* Render the picture (choose the best way) */
+$image->autoOutput("example.drawStockChart.png");
+```