| | 1 | <!DOCTYPE html> |
| | 2 | <html> |
| | 3 | <head> |
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| | 5 | <title>Independent Series</title> |
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| | 29 | </head> |
| | 30 | <body> |
| | 31 | <h3>Independent Series</h3> |
| | 32 | <p>By using the connectSeparated attribute, it's possible to display a chart of several time series with completely independent x-values.</p> |
| | 33 | |
| | 34 | <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> |
| | 35 | |
| | 36 | <div id="graph" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> |
| | 37 | <p>For example, say you had two series:</p> |
| | 38 | <table><tr> |
| | 39 | <td valign=top> |
| | 40 | <table> |
| | 41 | <table class=thinborder> |
| | 42 | <tr><th>x</th><th>A</th></tr> |
| | 43 | <tr><td>2</td><td>2</td></tr> |
| | 44 | <tr><td>4</td><td>6</td></tr> |
| | 45 | <tr><td>6</td><td>4</td></tr> |
| | 46 | </table> |
| | 47 | </td> |
| | 48 | <td valign=top style="padding-left:25px;"> |
| | 49 | <table class=thinborder> |
| | 50 | <tr><th>x</th><th>B</th></tr> |
| | 51 | <tr><td>1</td><td>3</td></tr> |
| | 52 | <tr><td>3</td><td>7</td></tr> |
| | 53 | <tr><td>5</td><td>5</td></tr> |
| | 54 | </table> |
| | 55 | </td> |
| | 56 | </tr></table> |
| | 57 | |
| | 58 | <p>Then you would specify the following CSV or native data:</p> |
| | 59 | <table><tr> |
| | 60 | <td valign=top> |
| | 61 | (CSV) |
| | 62 | <pre>X,A,B |
| | 63 | 1,,3 |
| | 64 | 2,2, |
| | 65 | 3,,7 |
| | 66 | 4,6, |
| | 67 | 5,,5 |
| | 68 | 6,4,</pre> |
| | 69 | </td> |
| | 70 | <td valign=top style="padding-left: 25px;"> |
| | 71 | (native) |
| | 72 | <pre>[ |
| | 73 | [1, null, 3], |
| | 74 | [2, 2, null], |
| | 75 | [3, null, 7], |
| | 76 | [4, 6, null], |
| | 77 | [5, null, 5], |
| | 78 | [6, 4, null] ]</pre> |
| | 79 | </td> |
| | 80 | </tr></table> |
| | 81 | |
| | 82 | <script type="text/javascript"> |
| | 83 | var g1 = new Dygraph( |
| | 84 | document.getElementById("graph"), |
| | 85 | [ |
| | 86 | [1, null, 3], |
| | 87 | [2, 2, null], |
| | 88 | [3, null, 7], |
| | 89 | [4, 5, null], |
| | 90 | [5, null, 5], |
| | 91 | [6, 3, null] |
| | 92 | ], |
| | 93 | { |
| | 94 | labels: ["x", "A", "B" ], |
| | 95 | connectSeparatedPoints: true, |
| | 96 | drawPoints: true |
| | 97 | } |
| | 98 | ); |
| | 99 | </script> |
| | 100 | |
| | 101 | <h3>Encoding a gap</h3> |
| | 102 | <p>There's one extra wrinkle. What if one of the series has a missing |
| | 103 | value, i.e. what if your series are something like </p> |
| | 104 | |
| | 105 | <table><tr> |
| | 106 | <td valign=top> |
| | 107 | <table> |
| | 108 | <table class=thinborder> |
| | 109 | <tr><th>x</th><th>A</th></tr> |
| | 110 | <tr><td>2</td><td>2</td></tr> |
| | 111 | <tr><td>4</td><td>4</td></tr> |
| | 112 | <tr><td>6</td><td>(gap)</td></tr> |
| | 113 | <tr><td>8</td><td>8</td></tr> |
| | 114 | <tr><td>10</td><td>10</td></tr> |
| | 115 | </table> |
| | 116 | </td> |
| | 117 | <td valign=top style="padding-left:25px;"> |
| | 118 | <table class=thinborder> |
| | 119 | <tr><th>x</th><th>B</th></tr> |
| | 120 | <tr><td>1</td><td>3</td></tr> |
| | 121 | <tr><td>3</td><td>5</td></tr> |
| | 122 | <tr><td>5</td><td>7</td></tr> |
| | 123 | </table> |
| | 124 | </td> |
| | 125 | </tr></table> |
| | 126 | |
| | 127 | <div id="graph3" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> |
| | 128 | <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> |
| | 129 | |
| | 130 | <script type="text/javascript"> |
| | 131 | g2 = new Dygraph( |
| | 132 | document.getElementById("graph3"), |
| | 133 | "x,A,B \n" + |
| | 134 | "1,,3 \n" + |
| | 135 | "2,2, \n" + |
| | 136 | "3,,5 \n" + |
| | 137 | "4,4, \n" + |
| | 138 | "5,,7 \n" + |
| | 139 | "6,NaN, \n" + |
| | 140 | "8,8, \n" + |
| | 141 | "10,10, \n" |
| | 142 | , { |
| | 143 | connectSeparatedPoints: true, |
| | 144 | drawPoints: true |
| | 145 | } |
| | 146 | ); |
| | 147 | </script> |
| | 148 | |
| | 149 | <table><tr> |
| | 150 | <td valign=top> |
| | 151 | (CSV) |
| | 152 | <pre>x,A,B |
| | 153 | 1,,3 |
| | 154 | 2,2, |
| | 155 | 3,,5 |
| | 156 | 4,4, |
| | 157 | 5,,7 |
| | 158 | 6,NaN, |
| | 159 | 8,8, |
| | 160 | 10,10,</pre> |
| | 161 | </td> |
| | 162 | <td valign=top style="padding-left: 25px;"> |
| | 163 | (native) |
| | 164 | <pre>[ [1, null, 3], |
| | 165 | [2, 2, null], |
| | 166 | [3, null, 5], |
| | 167 | [4, 4, null], |
| | 168 | [5, null, 7], |
| | 169 | [6, NaN, null], |
| | 170 | [8, 8, null], |
| | 171 | [10, 10, null] ]</pre> |
| | 172 | </td> |
| | 173 | </tr></table> |
| | 174 | |
| | 175 | <h3>Behavior at the edges of the panel for independent series</h3> |
| | 176 | <p> In case only a part of the whole data is visible (e.g. after zooming in) the lines are |
| | 177 | drawn to the respective next valid point outside the visible area. </p> |
| | 178 | |
| | 179 | <table><tr> |
| | 180 | <td valign=top> |
| | 181 | <table> |
| | 182 | <table class=thinborder> |
| | 183 | <tr><th>x</th><th>A</th></tr> |
| | 184 | <tr><td>0</td><td>2</td></tr> |
| | 185 | <tr><td>1</td><td>3</td></tr> |
| | 186 | <tr><td>2</td><td>3</td></tr> |
| | 187 | <tr><td>4</td><td>4</td></tr> |
| | 188 | <tr><td>5</td><td>3</td></tr> |
| | 189 | <tr><td>6</td><td>3</td></tr> |
| | 190 | <tr><td>7</td><td>3</td></tr> |
| | 191 | <tr><td>8</td><td>4</td></tr> |
| | 192 | </table> |
| | 193 | </td> |
| | 194 | <td valign=top style="padding-left:25px;"> |
| | 195 | <table class=thinborder> |
| | 196 | <tr><th>x</th><th>B</th></tr> |
| | 197 | <tr><td>0</td><td>1</td></tr> |
| | 198 | <tr><td>1</td><td>2</td></tr> |
| | 199 | <tr><td>2</td><td>1</td></tr> |
| | 200 | <tr><td>8</td><td>2</td></tr> |
| | 201 | </table> |
| | 202 | </td> |
| | 203 | </tr></table> |
| | 204 | |
| | 205 | <div id="graph2" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> |
| | 206 | <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. |
| | 207 | 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> |
| | 208 | <p>Use double click to unzoom and see the currently invisible points</p> |
| | 209 | |
| | 210 | <script type="text/javascript"> |
| | 211 | g2 = new Dygraph( |
| | 212 | document.getElementById("graph2"), |
| | 213 | "x,A,B \n" + |
| | 214 | "0,2,1 \n" + |
| | 215 | "1,3,2 \n" + |
| | 216 | "2,3,1 \n" + |
| | 217 | "3,, \n" + |
| | 218 | "4,4, \n" + |
| | 219 | "5,3, \n" + |
| | 220 | "6,3, \n" + |
| | 221 | "7,3, \n" + |
| | 222 | "8,4,2 \n" |
| | 223 | |
| | 224 | , { |
| | 225 | connectSeparatedPoints: true, |
| | 226 | drawPoints: true, |
| | 227 | pointSize: 3, |
| | 228 | highlightCircleSize: 5, |
| | 229 | dateWindow: [0,3] |
| | 230 | } |
| | 231 | ); |
| | 232 | </script> |
| | 233 | |
| | 234 | <table><tr> |
| | 235 | <td valign=top> |
| | 236 | Index |
| | 237 | <pre> |
| | 238 | 0 |
| | 239 | 1 |
| | 240 | 2 |
| | 241 | 3 |
| | 242 | 4 |
| | 243 | 5 |
| | 244 | 6 |
| | 245 | 7 |
| | 246 | 8</pre> |
| | 247 | </td> |
| | 248 | <td valign=top> |
| | 249 | (CSV) |
| | 250 | <pre>x,A,B |
| | 251 | 0,2,1 |
| | 252 | 1,3,2 |
| | 253 | 2,3,1 |
| | 254 | 3,, |
| | 255 | 4,4, |
| | 256 | 5,3, |
| | 257 | 6,3, |
| | 258 | 7,3, |
| | 259 | 8,4,2</pre> |
| | 260 | </td> |
| | 261 | <td valign=top style="padding-left: 25px;"> |
| | 262 | (native) |
| | 263 | <pre>[ |
| | 264 | [0, 2, 1], |
| | 265 | [1, 3, 2], |
| | 266 | [2, 3, 1], |
| | 267 | [3, null, null], |
| | 268 | [4, 4, null], |
| | 269 | [5, 3, null], |
| | 270 | [6, 3, null], |
| | 271 | [7, 3, null], |
| | 272 | [8, 4, 2] ]</pre> |
| | 273 | </td> |
| | 274 | </tr></table> |
| | 275 | |
| | 276 | </body> |
| | 277 | </html> |
projects / dygraphs.git / blame_incremental