72 lines
1.9 KiB
Markdown
72 lines
1.9 KiB
Markdown
# Drawing a zone chart
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[Reference](http://wiki.pchart.net/doc.chart.drawzonechart.html)
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```php
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require '/path/to/your/vendor/autoload.php';
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use CpChart\Data;
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use CpChart\Image;
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/* Create and populate the Data object */
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$data = new Data();
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for ($i = 0; $i <= 10; $i = $i + .2) {
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$data->addPoints(log($i + 1) * 10, "Bounds 1");
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$data->addPoints(log($i + 3) * 10 + rand(0, 2) - 1, "Probe");
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$data->addPoints(log($i + 6) * 10, "Bounds 2");
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$data->addPoints($i * 10, "Labels");
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}
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$data->setAxisName(0, "Size (cm)");
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$data->setSerieDescription("Labels", "Months");
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$data->setAbscissa("Labels");
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$data->setAbscissaName("Time (years)");
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/* Create the Image object */
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$image = new Image(700, 230, $data);
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/* Turn off Antialiasing */
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$image->Antialias = false;
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/* Add a border to the picture */
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$image->drawRectangle(0, 0, 699, 229, ["R" => 0, "G" => 0, "B" => 0]);
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/* Write the chart title */
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$image->setFontProperties(["FontName" => "Forgotte.ttf", "FontSize" => 11]);
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$image->drawText(150, 35, "Size by time generations", ["FontSize" => 20, "Align" => TEXT_ALIGN_BOTTOMMIDDLE]);
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/* Set the default font */
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$image->setFontProperties(["FontName" => "pf_arma_five.ttf", "FontSize" => 6]);
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/* Define the chart area */
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$image->setGraphArea(40, 40, 680, 200);
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/* Draw the scale */
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$image->drawScale([
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"LabelSkip" => 4,
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"XMargin" => 10,
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"YMargin" => 10,
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"Floating" => true,
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"GridR" => 200,
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"GridG" => 200,
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"GridB" => 200,
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"DrawSubTicks" => true,
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"CycleBackground" => true
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]);
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/* Turn on Antialiasing */
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$image->Antialias = true;
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/* Draw the line chart */
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$image->drawZoneChart("Bounds 1", "Bounds 2");
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$data->setSerieDrawable(["Bounds 1", "Bounds 2"], false);
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/* Draw the line chart */
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$image->drawStepChart();
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/* Write the chart legend */
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$image->drawLegend(640, 20, ["Style" => LEGEND_NOBORDER, "Mode" => LEGEND_HORIZONTAL]);
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/* Render the picture (choose the best way) */
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$image->autoOutput("example.drawZoneChart.png");
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```
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