| 1 | <!DOCTYPE html> |
| 2 | <html> |
| 3 | <head> |
| 4 | <link rel="stylesheet" href="../dist/dygraph.css"> |
| 5 | <title>UTC date labels</title> |
| 6 | <script type="text/javascript" src="../dist/dygraph.js"></script> |
| 7 | </head> |
| 8 | <body> |
| 9 | |
| 10 | <h2>UTC date and time labels</h2> |
| 11 | |
| 12 | <p>This shows how date ticks and labels may be generated according to local |
| 13 | time (default) or UTC with the option <code>labelsUTC</code>.</p> |
| 14 | |
| 15 | <p>72 hours of random hourly data since 2009-Jul-23 18:00 UTC |
| 16 | according to local time (top) and UTC (bottom):</p> |
| 17 | |
| 18 | <div id="div_loc" style="width:600px; height:200px;"></div> |
| 19 | <div id="div_utc" style="width:600px; height:200px;"></div> |
| 20 | |
| 21 | <p>Please note the offset between the respective ticks in both plots. |
| 22 | It should match your local time zone offset.</p> |
| 23 | |
| 24 | <p>You can also check it by hovering over corresponding points and comparing |
| 25 | the value labels.</p> |
| 26 | |
| 27 | <p>Try different zoom levels to show that ticks are always placed at nice |
| 28 | time boundaries.</p> |
| 29 | |
| 30 | <script type="text/javascript"> |
| 31 | var data = (function() { |
| 32 | var rand10 = function () { return Math.round(10 * Math.random()); }; |
| 33 | var a = [] |
| 34 | for (var y = 2009, m = 6, d = 23, hh = 18, n=0; n < 72; n++) { |
| 35 | a.push([new Date(Date.UTC(y, m, d, hh + n, 0, 0)), rand10()]); |
| 36 | } |
| 37 | return a; |
| 38 | })(); |
| 39 | gloc = new Dygraph( |
| 40 | document.getElementById("div_loc"), |
| 41 | data, |
| 42 | { |
| 43 | labels: ['local time', 'random'] |
| 44 | } |
| 45 | ); |
| 46 | gutc = new Dygraph( |
| 47 | document.getElementById("div_utc"), |
| 48 | data, |
| 49 | { |
| 50 | labelsUTC: true, |
| 51 | labels: ['UTC', 'random'] |
| 52 | } |
| 53 | ); |
| 54 | </script> |
| 55 | |
| 56 | </body> |
| 57 | </html> |