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feat: add background fill, begin work on x-axis

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Joshua Seigler 2017-03-04 23:48:31 -05:00
parent eb9a5e9279
commit d59dd86f14
6 changed files with 54 additions and 35 deletions
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25
demo-as-image.php
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@ -1,18 +1,23 @@
<?php
require_once 'vendor/autoload.php';
$chartData = [];
$offset = 100 * (rand()/getRandMax())**4;
$scale = 100 * (rand()/getRandMax())**2;
$volatility = 0.5 * (rand()/getRandMax())**3;
for ($n = 0, $current = $offset + 0.5 * $scale; $n < 24; $n++) {
$current -= $offset;
$current *= 1 + $volatility * (rand()/getRandMax() - 0.5);
$current += $offset;
$chartData[$n] = $current;
function randomData($count = 20, $offsetMax = 100) {
$randomData = [];
$duration = 60 * 5 + rand() * 60 * 60 * 24;
$begin = time() - $duration;
$offset = $offsetMax * (rand()/getRandMax())**2;
$scale = max(0.25 * $offset, 100 * rand() / getRandMax());
$volatility = 0.25 * (rand()/getRandMax())**3 + 0.25;
for ($n = 0, $current = $offset + 0.5 * $scale; $n < $count; $n++) {
$current -= $offset;
$current *= 1 + $volatility * (rand()/getRandMax() - 0.5);
$current += $offset;
$randomData[$begin + $duration / $count * $n] = $current;
}
return $randomData;
}
$chart = new NeatCharts\LineChart($chartData, [
$chart = new NeatCharts\LineChart(randomData(), [
'width'=>500,
'height'=>400,
'lineColor'=>'#00F',