mirror of
https://github.com/seigler/neat-charts
synced 2025-07-27 09:26:10 +00:00
removing demo files
This commit is contained in:
Joshua Seigler
parent
9f955259fa
commit
04369adbb3
4 changed files with 0 additions and 283 deletions
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<?php
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// Adapted for The Art of Web: www.the-art-of-web.com
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// Based on PHP code by Dennis Pallett: www.phpit.net
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// Please acknowledge use of this code by including this header.
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// Updated to include and use last-modified and etag headers
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// location and prefix for cache files
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define('CACHE_PATH', "/tmp/cache_");
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// how long to keep the cache files (seconds)
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define('CACHE_TIME', 5 * 60);
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// return location and name for cache file
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function cache_file()
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{
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return CACHE_PATH . md5('buffer'.$_SERVER['REQUEST_URI']);
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}
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// display cached file if present and not expired
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function cache_display()
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{
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$file = cache_file();
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// check that cache file exists and is not too old
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if(!file_exists($file)) return;
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$last_modified_time = filemtime($file);
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if($last_modified_time < time() - CACHE_TIME) return;
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$etag = md5_file($file);
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// always send headers
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header("Last-Modified: ".gmdate("D, d M Y H:i:s", $last_modified_time)." GMT");
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header("Etag: $etag");
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header("Expires: ".gmdate("D, d M Y H:i:s", $last_modified_time + CACHE_TIME)." GMT");
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// tell any caches that I really mean it with these other headers
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header("Cache-Control: max-age=".CACHE_TIME.", must-revalidate");
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// exit if not modified
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if (@strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) == $last_modified_time ||
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@trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) {
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header("HTTP/1.1 304 Not Modified");
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exit;
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}
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// if so, display cache file and stop processing
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readfile($file);
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exit;
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}
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// write to cache file
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function cache_page($content)
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{
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if(false !== ($f = @fopen(cache_file(), 'w'))) {
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fwrite($f, $content);
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fclose($f);
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}
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$last_modified_time = time();
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$etag = md5_file('buffer'.$file);
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// always send headers
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header("Last-Modified: ".gmdate("D, d M Y H:i:s", $last_modified_time)." GMT");
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header("Etag: $etag");
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header("Expires: ".gmdate("D, d M Y H:i:s", $last_modified_time + CACHE_TIME)." GMT");
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return $content;
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}
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// execution stops here if valid cache file found
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cache_display();
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// enable output buffering and create cache file
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ob_start('cache_page');
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?>
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@ -1,93 +0,0 @@
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<!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>NeatCharts 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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<header>
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<h1>NeatCharts demo</h1>
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</header>
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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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require '../src/NeatCharts/LineChart.php'; // just use composer instead of this
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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 NeatCharts\LineChart($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 NeatCharts\LineChart($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 $tempChart->render();
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?>
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</section>
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</main>
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</body>
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</html>
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@ -1,66 +0,0 @@
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<?php
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//ini_set('display_errors', 1);
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/*
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Display a 7 day Dash/BTC chart from Poloniex as a PNG (converted from SVG by imageMagick)
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requires the imagick module be installed
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*/
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header("Content-Type: image/png");
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header('Content-Disposition: inline; filename="Dash-24h-chart-' . date('Y-m-d\THisT') . '.png"');
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require 'buffer.php';
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require '../src/NeatCharts/LineChart.php'; // really just use composer instead
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function getJson($url) {
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if (empty($url)) {
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trigger_error('Missing or empty JSON url');
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}
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$ch = curl_init($url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json'));
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
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curl_setopt($ch, CURLOPT_TIMEOUT, 3);
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// curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
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// curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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// curl_setopt($ch, CURLOPT_CAINFO, getcwd() . "/VeriSignClass3PublicPrimaryCertificationAuthority-G5.pem");
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$result = curl_exec($ch);
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$result = json_decode($result) or trigger_error('Couldn\'t parse JSON');
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return $result;
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}
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$yesterday = time() - (7 * 24 * 60 * 60);
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$poloniex_url = 'https://poloniex.com/public?command=returnChartData¤cyPair=BTC_DASH&start=' . $yesterday . '&end=9999999999&period=' .
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//300 //5 min
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//900 //15 min
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1800 //30 min
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//7200 //3h
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//14400 //6h
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//86400 //1d
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;
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$last24h = getJson($poloniex_url);
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$chartData = [];
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foreach ($last24h as $item) {
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$chartData[$item->date] = $item->weightedAverage;
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}
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$poloniexChart = new NeatCharts\LineChart($chartData, [
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'width'=>800,
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'height'=>200,
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'lineColor'=>"#1C75BC", // Dash blue
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'labelColor'=>"#777",
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'smoothed'=>false,
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'fontSize'=>10
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]);
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$svg = $poloniexChart->render();
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$im = new Imagick();
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$im->setBackgroundColor(new ImagickPixel("transparent"));
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$im->readImageBlob($svg);
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$im->setImageFormat("png32");
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echo $im;
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$im->clear();
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$im->destroy();
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<?php
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//ini_set('display_errors', 1);
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Header('Content-type: image/svg+xml; charset=utf-8');
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Header('Content-Disposition: inline; filename="Dash-24h-chart-' . date('Y-m-d\THisT') . '.svg"');
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require 'buffer.php';
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require '../src/NeatCharts/LineChart.php'; // really just use composer instead
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function getJson($url) {
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if (empty($url)) {
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trigger_error('Missing or empty JSON url');
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}
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$ch = curl_init($url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json'));
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
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curl_setopt($ch, CURLOPT_TIMEOUT, 3);
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// curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
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// curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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// curl_setopt($ch, CURLOPT_CAINFO, getcwd() . "/VeriSignClass3PublicPrimaryCertificationAuthority-G5.pem");
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$result = curl_exec($ch);
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$result = json_decode($result) or trigger_error('Couldn\'t parse JSON');
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return $result;
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}
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$yesterday = time() - (24 * 60 * 60);
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$poloniex_url = 'https://poloniex.com/public?command=returnChartData¤cyPair=BTC_DASH&start=' . $yesterday . '&end=9999999999&period=' .
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//300 //5 min
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900 //15 min
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//1800 //30 min
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//7200 //3h
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//14400 //6h
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//86400 //1d
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;
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$last24h = getJson($poloniex_url);
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$chartData = [];
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foreach ($last24h as $item) {
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$chartData[$item->date] = $item->weightedAverage;
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}
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$poloniexChart = new NeatCharts\LineChart($chartData, [
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'width'=>800,
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'height'=>250,
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'lineColor'=>"#1C75BC", // Dash blue
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'labelColor'=>"#777",
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'smoothed'=>false
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]);
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print $poloniexChart->render();
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