projects / dygraphs.git / blame
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| 54425b14 | 1 | <!DOCTYPE html> |
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2 | <html> |
| 3 | <head> | |
| 4 | <title>Independent Series</title> | |
| 7e5ddc94 DV |
5 | <!-- |
| 6 | For production (minified) code, use: | |
| 7 | <script type="text/javascript" src="dygraph-combined.js"></script> | |
| 8 | --> | |
| fbd6834a | 9 | <script type="text/javascript" src="../dist/dygraph.js"></script> |
| 7e5ddc94 | 10 | |
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11 | <style type="text/css"> |
| 12 | .thinborder { | |
| 13 | border-width: 1px; | |
| 14 | border-spacing: 0px; | |
| 15 | border-style: solid; | |
| 16 | border-color: black; | |
| 17 | border-collapse: collapse; | |
| 18 | } | |
| 19 | ||
| 20 | .thinborder td, | |
| 21 | .thinborder th { | |
| 22 | border-width: 1px; | |
| 23 | padding: 5px; | |
| 24 | border-style: solid; | |
| 25 | border-color: black; | |
| 26 | } | |
| 27 | </style> | |
| 28 | </head> | |
| 29 | <body> | |
| 7219edb3 | 30 | <h3>Independent Series</h3> |
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31 | <p>By using the connectSeparated attribute, it's possible to display a chart of several time series with completely independent x-values.</p> |
| 32 | ||
| 33 | <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> | |
| 34 | ||
| c6a0ebba | 35 | <div id="graph" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> |
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36 | <p>For example, say you had two series:</p> |
| 37 | <table><tr> | |
| 38 | <td valign=top> | |
| 39 | <table> | |
| 40 | <table class=thinborder> | |
| 41 | <tr><th>x</th><th>A</th></tr> | |
| 42 | <tr><td>2</td><td>2</td></tr> | |
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43 | <tr><td>4</td><td>6</td></tr> |
| 44 | <tr><td>6</td><td>4</td></tr> | |
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45 | </table> |
| 46 | </td> | |
| 47 | <td valign=top style="padding-left:25px;"> | |
| 48 | <table class=thinborder> | |
| 49 | <tr><th>x</th><th>B</th></tr> | |
| 50 | <tr><td>1</td><td>3</td></tr> | |
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51 | <tr><td>3</td><td>7</td></tr> |
| 52 | <tr><td>5</td><td>5</td></tr> | |
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53 | </table> |
| 54 | </td> | |
| 55 | </tr></table> | |
| 56 | ||
| 57 | <p>Then you would specify the following CSV or native data:</p> | |
| 58 | <table><tr> | |
| 59 | <td valign=top> | |
| 60 | (CSV) | |
| 61 | <pre>X,A,B | |
| 62 | 1,,3 | |
| 63 | 2,2, | |
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64 | 3,,7 |
| 65 | 4,6, | |
| 66 | 5,,5 | |
| 67 | 6,4,</pre> | |
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68 | </td> |
| 69 | <td valign=top style="padding-left: 25px;"> | |
| 70 | (native) | |
| 71 | <pre>[ | |
| 72 | [1, null, 3], | |
| 73 | [2, 2, null], | |
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74 | [3, null, 7], |
| 75 | [4, 6, null], | |
| 76 | [5, null, 5], | |
| 77 | [6, 4, null] ]</pre> | |
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78 | </td> |
| 79 | </tr></table> | |
| 80 | ||
| 81 | <script type="text/javascript"> | |
| f6fbf9e0 | 82 | var g1 = new Dygraph( |
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83 | document.getElementById("graph"), |
| 84 | [ | |
| 85 | [1, null, 3], | |
| 86 | [2, 2, null], | |
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87 | [3, null, 7], |
| 88 | [4, 5, null], | |
| 89 | [5, null, 5], | |
| 90 | [6, 3, null] | |
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91 | ], |
| 92 | { | |
| 93 | labels: ["x", "A", "B" ], | |
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94 | connectSeparatedPoints: true, |
| 95 | drawPoints: true | |
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96 | } |
| 97 | ); | |
| 98 | </script> | |
| 99 | ||
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100 | <h3>Encoding a gap</h3> |
| 101 | <p>There's one extra wrinkle. What if one of the series has a missing | |
| 102 | value, i.e. what if your series are something like </p> | |
| 103 | ||
| 104 | <table><tr> | |
| 105 | <td valign=top> | |
| 106 | <table> | |
| 107 | <table class=thinborder> | |
| 108 | <tr><th>x</th><th>A</th></tr> | |
| 109 | <tr><td>2</td><td>2</td></tr> | |
| 110 | <tr><td>4</td><td>4</td></tr> | |
| 111 | <tr><td>6</td><td>(gap)</td></tr> | |
| 112 | <tr><td>8</td><td>8</td></tr> | |
| 113 | <tr><td>10</td><td>10</td></tr> | |
| 114 | </table> | |
| 115 | </td> | |
| 116 | <td valign=top style="padding-left:25px;"> | |
| 117 | <table class=thinborder> | |
| 118 | <tr><th>x</th><th>B</th></tr> | |
| 119 | <tr><td>1</td><td>3</td></tr> | |
| 120 | <tr><td>3</td><td>5</td></tr> | |
| 121 | <tr><td>5</td><td>7</td></tr> | |
| 122 | </table> | |
| 123 | </td> | |
| 124 | </tr></table> | |
| 125 | ||
| 126 | <div id="graph3" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> | |
| 127 | <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> | |
| 128 | ||
| 129 | <script type="text/javascript"> | |
| 130 | g2 = new Dygraph( | |
| 131 | document.getElementById("graph3"), | |
| 132 | "x,A,B \n" + | |
| 133 | "1,,3 \n" + | |
| 134 | "2,2, \n" + | |
| 135 | "3,,5 \n" + | |
| 136 | "4,4, \n" + | |
| 137 | "5,,7 \n" + | |
| 138 | "6,NaN, \n" + | |
| 139 | "8,8, \n" + | |
| 140 | "10,10, \n" | |
| 141 | , { | |
| 142 | connectSeparatedPoints: true, | |
| 143 | drawPoints: true | |
| 144 | } | |
| 145 | ); | |
| 146 | </script> | |
| 147 | ||
| 148 | <table><tr> | |
| 149 | <td valign=top> | |
| 150 | (CSV) | |
| 151 | <pre>x,A,B | |
| 152 | 1,,3 | |
| 153 | 2,2, | |
| 154 | 3,,5 | |
| 155 | 4,4, | |
| 156 | 5,,7 | |
| 157 | 6,NaN, | |
| 158 | 8,8, | |
| 159 | 10,10,</pre> | |
| 160 | </td> | |
| 161 | <td valign=top style="padding-left: 25px;"> | |
| 162 | (native) | |
| 163 | <pre>[ [1, null, 3], | |
| 164 | [2, 2, null], | |
| 165 | [3, null, 5], | |
| 166 | [4, 4, null], | |
| 167 | [5, null, 7], | |
| 168 | [6, NaN, null], | |
| 169 | [8, 8, null], | |
| 170 | [10, 10, null] ]</pre> | |
| 171 | </td> | |
| 172 | </tr></table> | |
| 173 | ||
| 1ef9d2f7 | 174 | <h3>Behavior at the edges of the panel for independent series</h3> |
| 175 | <p> In case only a part of the whole data is visible (e.g. after zooming in) the lines are | |
| 176 | drawn to the respective next valid point outside the visible area. </p> | |
| 177 | ||
| 178 | <table><tr> | |
| 179 | <td valign=top> | |
| 180 | <table> | |
| 181 | <table class=thinborder> | |
| 182 | <tr><th>x</th><th>A</th></tr> | |
| 183 | <tr><td>0</td><td>2</td></tr> | |
| 184 | <tr><td>1</td><td>3</td></tr> | |
| 185 | <tr><td>2</td><td>3</td></tr> | |
| 186 | <tr><td>4</td><td>4</td></tr> | |
| 187 | <tr><td>5</td><td>3</td></tr> | |
| 188 | <tr><td>6</td><td>3</td></tr> | |
| 189 | <tr><td>7</td><td>3</td></tr> | |
| 190 | <tr><td>8</td><td>4</td></tr> | |
| 191 | </table> | |
| 192 | </td> | |
| 193 | <td valign=top style="padding-left:25px;"> | |
| 194 | <table class=thinborder> | |
| 195 | <tr><th>x</th><th>B</th></tr> | |
| 196 | <tr><td>0</td><td>1</td></tr> | |
| 197 | <tr><td>1</td><td>2</td></tr> | |
| 198 | <tr><td>2</td><td>1</td></tr> | |
| 199 | <tr><td>8</td><td>2</td></tr> | |
| 200 | </table> | |
| 201 | </td> | |
| 202 | </tr></table> | |
| 203 | ||
| 204 | <div id="graph2" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> | |
| 205 | <p>Both graphs have no value at the right edge of the panel (x=3). The lines that are drawn to the right edge are determined by their respective next valid value outside the visible area. | |
| 206 | Therefore it is neither necessary that the next valid values are on the same point nor that they have the same index (index 4 for the green line and index 8 for the blue line).</p> | |
| 207 | <p>Use double click to unzoom and see the currently invisible points</p> | |
| 208 | ||
| 209 | <script type="text/javascript"> | |
| 210 | g2 = new Dygraph( | |
| 211 | document.getElementById("graph2"), | |
| 212 | "x,A,B \n" + | |
| 213 | "0,2,1 \n" + | |
| 214 | "1,3,2 \n" + | |
| 215 | "2,3,1 \n" + | |
| 216 | "3,, \n" + | |
| 217 | "4,4, \n" + | |
| 218 | "5,3, \n" + | |
| 219 | "6,3, \n" + | |
| 220 | "7,3, \n" + | |
| 221 | "8,4,2 \n" | |
| 222 | ||
| 223 | , { | |
| 224 | connectSeparatedPoints: true, | |
| 225 | drawPoints: true, | |
| 226 | pointSize: 3, | |
| 227 | highlightCircleSize: 5, | |
| 228 | dateWindow: [0,3] | |
| 229 | } | |
| 230 | ); | |
| 231 | </script> | |
| 232 | ||
| 233 | <table><tr> | |
| 234 | <td valign=top> | |
| 235 | Index | |
| 236 | <pre> | |
| 237 | 0 | |
| 238 | 1 | |
| 239 | 2 | |
| 240 | 3 | |
| 241 | 4 | |
| 242 | 5 | |
| 243 | 6 | |
| 244 | 7 | |
| 245 | 8</pre> | |
| 246 | </td> | |
| 247 | <td valign=top> | |
| 248 | (CSV) | |
| 249 | <pre>x,A,B | |
| 250 | 0,2,1 | |
| 251 | 1,3,2 | |
| 252 | 2,3,1 | |
| 253 | 3,, | |
| 254 | 4,4, | |
| 255 | 5,3, | |
| 256 | 6,3, | |
| 257 | 7,3, | |
| 258 | 8,4,2</pre> | |
| 259 | </td> | |
| 260 | <td valign=top style="padding-left: 25px;"> | |
| 261 | (native) | |
| 262 | <pre>[ | |
| 263 | [0, 2, 1], | |
| 264 | [1, 3, 2], | |
| 265 | [2, 3, 1], | |
| 266 | [3, null, null], | |
| 267 | [4, 4, null], | |
| 268 | [5, 3, null], | |
| 269 | [6, 3, null], | |
| 270 | [7, 3, null], | |
| 271 | [8, 4, 2] ]</pre> | |
| 272 | </td> | |
| 273 | </tr></table> | |
| c6a0ebba | 274 | |
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275 | </body> |
| 276 | </html> |