Text figure markers example

The code below is the source for this graph.

<?php
// Text figure markers example
require_once 'SVGGraph/autoloader.php';

$settings = [
  'back_stroke_width' => 0,
  'back_shadow' => 3,
  'back_colour' => 'white',
  'auto_fit' => true,
  'axis_font' => 'Arial',
  'axis_font_size' => 12,
  'axis_font_weight' => 'bold',
  'axis_text_space' => 5,
  'line_stroke_width' => 1,
  'show_tooltips' => false,
  'structure' => [
    'key' => 0, 'value' => [ 1, 2, 3,],
  ],
  'axis_zero_y' => false,
  'marker_type' => ['figure:a', 'figure:b', 'figure:c'],
  'datetime_keys' => true,
  'minimum_grid_spacing' => 40,
  'figure' => [
    ['surround',
      ['circle', 'cx' => 0, 'cy' => 0, 'r' => 8, 'fill' => '#eef'],
    ],
    ['a',
      ['figure', 'x' => 0, 'y' => 0, 'name' => 'surround'],
      ['text', 'x' => 0, 'y' => 5, 'text' => 'A', 'text_align' => 'centre'],
    ],
    ['b',
      ['figure', 'x' => 0, 'y' => 0, 'name' => 'surround'],
      ['text', 'x' => 0, 'y' => 5, 'text' => 'B', 'text_align' => 'centre'],
    ],
    ['c',
      ['figure', 'x' => 0, 'y' => 0, 'name' => 'surround'],
      ['text', 'x' => 0, 'y' => -15, 'text' => "If you\ncan read this\nyou are too\nclose",
        'text_align' => 'centre', 'transform' => 'scale(0.18)'],
    ],
  ],
  'shape' => [
    'text', 'x' => 60, 'y' => 40, 'text' => "A label would be better,\nbut this works",
  ],
];


$values = [
  ["2008-05-02", 318.6, 585.2, 1200,],
  ["2008-06-13", 134.8, 263.4, ],
  ["2010-05-07", 312.4, 623.9, ],
  ["2011-05-06", 181, 449.3, 900,],
  ["2011-07-22", 176.7, 370.6, ],
  ["2012-05-04", 623.4, 1519, ],
  ["2013-05-03", 409, 1215, 1600, ],
  ["2013-11-08", 206.4, 644.6, ],
  ["2014-04-04", 259.8, 714.3, ],
  ["2014-08-01", 333.2, 773.3, ],
  ["2015-05-01", 459, 1405, ],
  ["2015-07-17", 180.2, 519.3, 1200],
];

$graph = new Goat1000\SVGGraph\SVGGraph(670, 300, $settings);
$graph->values($values);
$graph->colours(['red/saturation(180%)/brightness(150%)', 
  'orange/brightness(80%)', '#88f']);
$graph->render('MultiSteppedLineGraph');

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.