38 lines
1.1 KiB
Markdown
38 lines
1.1 KiB
Markdown
# Drawing a spline chart
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[Reference](http://wiki.pchart.net/doc.chart.drawsplinechart.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 data
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$data = new Data();
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$data->addPoints([], "Serie1");
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// Create the image and set the data
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$image = new Image(700, 230, $data);
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$image->setShadow(true, ["X" => 1, "Y" => 1, "R" => 0, "G" => 0, "B" => 0, "Alpha" => 20]);
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// 1st spline drawn in white with control points visible
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$firstCoordinates = [[40, 80], [280, 60], [340, 166], [590, 120]];
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$fistSplineSettings = ["R" => 255, "G" => 255, "B" => 255, "ShowControl" => true];
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$image->drawSpline($firstCoordinates, $fistSplineSettings);
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// 2nd spline dashed drawn in white with control points visible
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$secondCoordinates = [[250, 50], [250, 180], [350, 180], [350, 50]];
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$secondSplineSettings = [
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"R" => 255,
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"G" => 255,
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"B"=> 255,
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"ShowControl" => true,
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"Ticks" => 4
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];
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$image->drawSpline($secondCoordinates, $secondSplineSettings);
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// Render the picture (choose the best way)
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$image->autoOutput("example.drawSpline.png");
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```
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