Colour wheel

The code below is the source for this graph.

<?php
// Colour wheel
require_once 'SVGGraph/autoloader.php';

$step = 6;
$settings = [
  'show_labels' => false,
  'stroke_width' => 0,
  'start_angle' => 270 - $step/2,
  'show_tooltips' => false,
  'back_stroke_width' => 0,
  'pad_left' => 1,
  'pad_right' => 1,
  'pad_top' => 1,
  'pad_bottom' => 1,
  'sort' => false,
];

$values = [];
for($i = 0; $i < 360; $i += $step)
  $values[] = 1;

$svg = new Goat1000\SVGGraph\SVGGraph(120, 120, $settings);
$svg->values($values);
$svg->colourRangeHSL(0, 0, 1, 0.5, 360 - $step, 1, 0.5, 1);
$svg->render('PieGraph');

Please note: the source code above comes from a script used to generate one of the example graphs on the site. This is simply a wrapper page to apply highlighting and make the source code easier to read, so there is no content here to describe what the source code is doing.