| 1 | // Use this as a template for new Gallery entries. |
| 2 | Gallery.register( |
| 3 | 'independent-series', |
| 4 | { |
| 5 | name: 'Independent Series', |
| 6 | title: 'Independent Series', |
| 7 | setup: function(parent) { |
| 8 | parent.innerHTML = |
| 9 | "<p>By using the <i>connectSeparated</i> attribute, it's possible to display a chart of several time series with completely independent x-values.</p> \ |
| 10 | \ |
| 11 | <p>The trick is to specify values for the series at the union of the x-values of all series. For one series' x values, specify <code>null</code> for each of the other series.</p> \ |
| 12 | \ |
| 13 | <div id='graph' style='float: right; margin-right: 50px; width: 400px; height: 300px;'></div> \ |
| 14 | <p>For example, say you had two series:</p> \ |
| 15 | <table><tr> \ |
| 16 | <td valign=top> \ |
| 17 | <table> \ |
| 18 | <table class='thinborder'> \ |
| 19 | <tr><th>x</th><th>A</th></tr> \ |
| 20 | <tr><td>2</td><td>2</td></tr> \ |
| 21 | <tr><td>4</td><td>6</td></tr> \ |
| 22 | <tr><td>6</td><td>4</td></tr> \ |
| 23 | </table> \ |
| 24 | </td> \ |
| 25 | <td valign=top style='padding-left:25px;'> \ |
| 26 | <table class='thinborder'> \ |
| 27 | <tr><th>x</th><th>B</th></tr> \ |
| 28 | <tr><td>1</td><td>3</td></tr> \ |
| 29 | <tr><td>3</td><td>7</td></tr> \ |
| 30 | <tr><td>5</td><td>5</td></tr> \ |
| 31 | </table> \ |
| 32 | </td> \ |
| 33 | </tr></table> \ |
| 34 | \ |
| 35 | <p>Then you would specify the following CSV or native data:</p> \ |
| 36 | <table><tr> \ |
| 37 | <td valign=top> \ |
| 38 | (CSV) \ |
| 39 | <pre id='csv1'></pre> \ |
| 40 | </td> \ |
| 41 | <td valign=top style='padding-left: 25px;'>\ |
| 42 | (native) \ |
| 43 | <pre id='native1'></pre> \ |
| 44 | </td> \ |
| 45 | </tr></table> \ |
| 46 | \ |
| 47 | <h3>Encoding a gap</h3>\ |
| 48 | <p>There's one extra wrinkle. What if one of the series has a missing \ |
| 49 | value, i.e. what if your series are something like </p> \ |
| 50 | \ |
| 51 | <table><tr> \ |
| 52 | <td valign=top> \ |
| 53 | <table> \ |
| 54 | <table class='thinborder'> \ |
| 55 | <tr><th>x</th><th>A</th></tr> \ |
| 56 | <tr><td>2</td><td>2</td></tr> \ |
| 57 | <tr><td>4</td><td>4</td></tr> \ |
| 58 | <tr><td>6</td><td>(gap)</td></tr> \ |
| 59 | <tr><td>8</td><td>8</td></tr> \ |
| 60 | <tr><td>10</td><td>10</td></tr> \ |
| 61 | </table> \ |
| 62 | </td> \ |
| 63 | <td valign=top style='padding-left:25px;'> \ |
| 64 | <table class='thinborder'> \ |
| 65 | <tr><th>x</th><th>B</th></tr> \ |
| 66 | <tr><td>1</td><td>3</td></tr> \ |
| 67 | <tr><td>3</td><td>5</td></tr> \ |
| 68 | <tr><td>5</td><td>7</td></tr> \ |
| 69 | </table> \ |
| 70 | </td> \ |
| 71 | </tr></table> \ |
| 72 | \ |
| 73 | <div id='graph2' style='float: right; margin-right: 50px; width: 400px; height: 300px;'></div> \ |
| 74 | <p>The gap would normally be encoded as a null, or missing value. But when you use <code>connectSeparatedPoints</code>, that has a special meaning. Instead, you have to use <code>NaN</code>. This is a bit of a hack, but it gets the job done.</p> \ |
| 75 | \ |
| 76 | <table><tr> \ |
| 77 | <td valign=top> \ |
| 78 | (CSV) \ |
| 79 | <pre id='csv2'></pre> \ |
| 80 | </td> \ |
| 81 | <td valign=top style='padding-left: 25px;'> \ |
| 82 | (native) \ |
| 83 | <pre id='native2'></pre> \ |
| 84 | </td> \ |
| 85 | </tr></table>" |
| 86 | }, |
| 87 | run: function() { |
| 88 | document.getElementById("csv1").textContent = |
| 89 | "X,A,B\n" + |
| 90 | "1,,3\n" + |
| 91 | "2,2,\n" + |
| 92 | "3,,7\n" + |
| 93 | "4,6,\n" + |
| 94 | "5,,5\n" + |
| 95 | "6,4,"; |
| 96 | |
| 97 | document.getElementById("native1").textContent = |
| 98 | "[\n" + |
| 99 | " [1, null, 3],\n" + |
| 100 | " [2, 2, null],\n" + |
| 101 | " [3, null, 7],\n" + |
| 102 | " [4, 6, null],\n" + |
| 103 | " [5, null, 5],\n" + |
| 104 | " [6, 4, null]\n" + |
| 105 | "]"; |
| 106 | |
| 107 | document.getElementById("csv2").textContent = |
| 108 | "X,A,B\n" + |
| 109 | "1,,3\n" + |
| 110 | "2,2,\n" + |
| 111 | "3,,5\n" + |
| 112 | "4,4,\n" + |
| 113 | "6,Nan,\n" + |
| 114 | "8,8,\n" + |
| 115 | "10,10,"; |
| 116 | |
| 117 | document.getElementById("native2").textContent = |
| 118 | "[\n" + |
| 119 | " [1, null, 3],\n" + |
| 120 | " [2, 2, null],\n" + |
| 121 | " [3, null, 5],\n" + |
| 122 | " [4, 4, null],\n" + |
| 123 | " [5, null, 7],\n" + |
| 124 | " [6, NaN, null],\n" + |
| 125 | " [8, 8, null]\n" + |
| 126 | " [10, 10, null]\n" + |
| 127 | "]"; |
| 128 | |
| 129 | var g1 = new Dygraph( |
| 130 | document.getElementById('graph'), |
| 131 | [ |
| 132 | [1, null, 3], |
| 133 | [2, 2, null], |
| 134 | [3, null, 7], |
| 135 | [4, 5, null], |
| 136 | [5, null, 5], |
| 137 | [6, 3, null] |
| 138 | ], |
| 139 | { |
| 140 | labels: ['x', 'A', 'B' ], |
| 141 | connectSeparatedPoints: true, |
| 142 | drawPoints: true |
| 143 | } |
| 144 | ); |
| 145 | |
| 146 | g2 = new Dygraph( |
| 147 | document.getElementById('graph2'), |
| 148 | 'x,A,B \n' + |
| 149 | '1,,3 \n' + |
| 150 | '2,2, \n' + |
| 151 | '3,,5 \n' + |
| 152 | '4,4, \n' + |
| 153 | '5,,7 \n' + |
| 154 | '6,NaN, \n' + |
| 155 | '8,8, \n' + |
| 156 | '10,10, \n' |
| 157 | , { |
| 158 | labels: ['x', 'A', 'B' ], |
| 159 | connectSeparatedPoints: true, |
| 160 | drawPoints: true |
| 161 | } |
| 162 | ); |
| 163 | } |
| 164 | }); |
| 165 | |