mirror of
https://github.com/seigler/neat-charts
synced 2025-07-27 01:16:09 +00:00
481dd6747b
I changed to an options object, and found a cleaner way to merge defaults and passed options. I renamed and reorganized the demo files.
93 lines
2 KiB
PHP
93 lines
2 KiB
PHP
<!DOCTYPE html>
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<html lang="en-US">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0">
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<title>SVGChartBuilder demo</title>
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<style>
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main {
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-webkit-columns: 800px 2;
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-moz-columns: 800px 2;
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columns: 800px 2;
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}
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section {
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display: inline-block;
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width: auto;
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max-width: 800px;
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padding: 10px;
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vertical-align: top;
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}
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</style>
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</head>
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<body>
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<main>
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<section>
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<h2>Poloniex Dash/BTC Price</h2>
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<img src="poloniex-dash-btc.php" alt="Poloniex Dash/BTC price">
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</section>
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<section>
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<h2>Fake Stock Market Data</h2>
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<?php
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ini_set('display_errors', 1);
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spl_autoload_register(function ($class_name) {
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include $class_name . ".php";
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});
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// fake up some stock market data
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$chartData = [];
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$offset = 100 * (rand()/getRandMax())**4;
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$scale = 100 * (rand()/getRandMax())**2;
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$volatility = 0.5 * (rand()/getRandMax())**3;
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for ($n = 0, $current = $offset + 0.5 * $scale; $n < 96; $n++) {
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$current -= $offset;
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$current *= 1 + $volatility * (rand()/getRandMax() - 0.5);
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$current += $offset;
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$chartData[$n] = $current;
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}
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$stockChart = new SVGChartBuilder($chartData, [
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"width"=>500,
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"height"=>150,
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"fontSize"=>10
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]);
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print $stockChart->render();
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?>
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</section>
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<section>
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<h2>Monotonically Smoothed Chart</h2>
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<?php
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$chartData = [];
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$start = 100 * (rand()/getRandMax())**3;
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$volatility = rand()/getRandMax() + 0.01;
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$velocity = (rand()/getRandMax() - 0.5);
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$acceleration = 0.1 * (rand()/getRandMax())**2;
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for ($n = 0, $current = $start; $n < 12; $n++) {
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$velocity *= 0.5;
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$velocity += $acceleration * 2 * (rand()/getRandMax() - 0.5);
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$current += $velocity;
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$chartData[$n] = $current;
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}
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$tempChart = new SVGChartBuilder($chartData, [
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"width"=>700,
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"height"=>400,
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"lineColor"=>"#D00",
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"labelColor"=>"#777",
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"smoothed"=>true
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]);
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print $tempChart->render();
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?>
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</section>
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</main>
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</body>
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</html>
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