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54425b14 | 1 | <!DOCTYPE html> |
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2 | <html> |
3 | <head> | |
fd6b8dad | 4 | <link rel="stylesheet" href="../dist/dygraph.css"> |
75c589da | 5 | <title>Independent Series</title> |
fbd6834a | 6 | <script type="text/javascript" src="../dist/dygraph.js"></script> |
7e5ddc94 | 7 | |
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8 | <style type="text/css"> |
9 | .thinborder { | |
10 | border-width: 1px; | |
11 | border-spacing: 0px; | |
12 | border-style: solid; | |
13 | border-color: black; | |
14 | border-collapse: collapse; | |
15 | } | |
16 | ||
17 | .thinborder td, | |
18 | .thinborder th { | |
19 | border-width: 1px; | |
20 | padding: 5px; | |
21 | border-style: solid; | |
22 | border-color: black; | |
23 | } | |
24 | </style> | |
25 | </head> | |
26 | <body> | |
7219edb3 | 27 | <h3>Independent Series</h3> |
75c589da DV |
28 | <p>By using the connectSeparated attribute, it's possible to display a chart of several time series with completely independent x-values.</p> |
29 | ||
30 | <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> | |
31 | ||
c6a0ebba | 32 | <div id="graph" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> |
75c589da DV |
33 | <p>For example, say you had two series:</p> |
34 | <table><tr> | |
35 | <td valign=top> | |
36 | <table> | |
37 | <table class=thinborder> | |
38 | <tr><th>x</th><th>A</th></tr> | |
39 | <tr><td>2</td><td>2</td></tr> | |
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40 | <tr><td>4</td><td>6</td></tr> |
41 | <tr><td>6</td><td>4</td></tr> | |
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42 | </table> |
43 | </td> | |
44 | <td valign=top style="padding-left:25px;"> | |
45 | <table class=thinborder> | |
46 | <tr><th>x</th><th>B</th></tr> | |
47 | <tr><td>1</td><td>3</td></tr> | |
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48 | <tr><td>3</td><td>7</td></tr> |
49 | <tr><td>5</td><td>5</td></tr> | |
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50 | </table> |
51 | </td> | |
52 | </tr></table> | |
53 | ||
54 | <p>Then you would specify the following CSV or native data:</p> | |
55 | <table><tr> | |
56 | <td valign=top> | |
57 | (CSV) | |
58 | <pre>X,A,B | |
59 | 1,,3 | |
60 | 2,2, | |
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61 | 3,,7 |
62 | 4,6, | |
63 | 5,,5 | |
64 | 6,4,</pre> | |
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65 | </td> |
66 | <td valign=top style="padding-left: 25px;"> | |
67 | (native) | |
68 | <pre>[ | |
69 | [1, null, 3], | |
70 | [2, 2, null], | |
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71 | [3, null, 7], |
72 | [4, 6, null], | |
73 | [5, null, 5], | |
74 | [6, 4, null] ]</pre> | |
75c589da DV |
75 | </td> |
76 | </tr></table> | |
77 | ||
78 | <script type="text/javascript"> | |
f6fbf9e0 | 79 | var g1 = new Dygraph( |
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80 | document.getElementById("graph"), |
81 | [ | |
82 | [1, null, 3], | |
83 | [2, 2, null], | |
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84 | [3, null, 7], |
85 | [4, 5, null], | |
86 | [5, null, 5], | |
87 | [6, 3, null] | |
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88 | ], |
89 | { | |
90 | labels: ["x", "A", "B" ], | |
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91 | connectSeparatedPoints: true, |
92 | drawPoints: true | |
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93 | } |
94 | ); | |
95 | </script> | |
96 | ||
141064ff DE |
97 | <h3>Encoding a gap</h3> |
98 | <p>There's one extra wrinkle. What if one of the series has a missing | |
99 | value, i.e. what if your series are something like </p> | |
100 | ||
101 | <table><tr> | |
102 | <td valign=top> | |
103 | <table> | |
104 | <table class=thinborder> | |
105 | <tr><th>x</th><th>A</th></tr> | |
106 | <tr><td>2</td><td>2</td></tr> | |
107 | <tr><td>4</td><td>4</td></tr> | |
108 | <tr><td>6</td><td>(gap)</td></tr> | |
109 | <tr><td>8</td><td>8</td></tr> | |
110 | <tr><td>10</td><td>10</td></tr> | |
111 | </table> | |
112 | </td> | |
113 | <td valign=top style="padding-left:25px;"> | |
114 | <table class=thinborder> | |
115 | <tr><th>x</th><th>B</th></tr> | |
116 | <tr><td>1</td><td>3</td></tr> | |
117 | <tr><td>3</td><td>5</td></tr> | |
118 | <tr><td>5</td><td>7</td></tr> | |
119 | </table> | |
120 | </td> | |
121 | </tr></table> | |
122 | ||
123 | <div id="graph3" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> | |
124 | <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> | |
125 | ||
126 | <script type="text/javascript"> | |
127 | g2 = new Dygraph( | |
128 | document.getElementById("graph3"), | |
129 | "x,A,B \n" + | |
130 | "1,,3 \n" + | |
131 | "2,2, \n" + | |
132 | "3,,5 \n" + | |
133 | "4,4, \n" + | |
134 | "5,,7 \n" + | |
135 | "6,NaN, \n" + | |
136 | "8,8, \n" + | |
137 | "10,10, \n" | |
138 | , { | |
139 | connectSeparatedPoints: true, | |
140 | drawPoints: true | |
141 | } | |
142 | ); | |
143 | </script> | |
144 | ||
145 | <table><tr> | |
146 | <td valign=top> | |
147 | (CSV) | |
148 | <pre>x,A,B | |
149 | 1,,3 | |
150 | 2,2, | |
151 | 3,,5 | |
152 | 4,4, | |
153 | 5,,7 | |
154 | 6,NaN, | |
155 | 8,8, | |
156 | 10,10,</pre> | |
157 | </td> | |
158 | <td valign=top style="padding-left: 25px;"> | |
159 | (native) | |
160 | <pre>[ [1, null, 3], | |
161 | [2, 2, null], | |
162 | [3, null, 5], | |
163 | [4, 4, null], | |
164 | [5, null, 7], | |
165 | [6, NaN, null], | |
166 | [8, 8, null], | |
167 | [10, 10, null] ]</pre> | |
168 | </td> | |
169 | </tr></table> | |
170 | ||
1ef9d2f7 | 171 | <h3>Behavior at the edges of the panel for independent series</h3> |
172 | <p> In case only a part of the whole data is visible (e.g. after zooming in) the lines are | |
173 | drawn to the respective next valid point outside the visible area. </p> | |
174 | ||
175 | <table><tr> | |
176 | <td valign=top> | |
177 | <table> | |
178 | <table class=thinborder> | |
179 | <tr><th>x</th><th>A</th></tr> | |
180 | <tr><td>0</td><td>2</td></tr> | |
181 | <tr><td>1</td><td>3</td></tr> | |
182 | <tr><td>2</td><td>3</td></tr> | |
183 | <tr><td>4</td><td>4</td></tr> | |
184 | <tr><td>5</td><td>3</td></tr> | |
185 | <tr><td>6</td><td>3</td></tr> | |
186 | <tr><td>7</td><td>3</td></tr> | |
187 | <tr><td>8</td><td>4</td></tr> | |
188 | </table> | |
189 | </td> | |
190 | <td valign=top style="padding-left:25px;"> | |
191 | <table class=thinborder> | |
192 | <tr><th>x</th><th>B</th></tr> | |
193 | <tr><td>0</td><td>1</td></tr> | |
194 | <tr><td>1</td><td>2</td></tr> | |
195 | <tr><td>2</td><td>1</td></tr> | |
196 | <tr><td>8</td><td>2</td></tr> | |
197 | </table> | |
198 | </td> | |
199 | </tr></table> | |
200 | ||
201 | <div id="graph2" style="float: right; margin-right: 50px; width: 400px; height: 300px;"></div> | |
202 | <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. | |
203 | 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> | |
204 | <p>Use double click to unzoom and see the currently invisible points</p> | |
205 | ||
206 | <script type="text/javascript"> | |
207 | g2 = new Dygraph( | |
208 | document.getElementById("graph2"), | |
209 | "x,A,B \n" + | |
210 | "0,2,1 \n" + | |
211 | "1,3,2 \n" + | |
212 | "2,3,1 \n" + | |
213 | "3,, \n" + | |
214 | "4,4, \n" + | |
215 | "5,3, \n" + | |
216 | "6,3, \n" + | |
217 | "7,3, \n" + | |
218 | "8,4,2 \n" | |
219 | ||
220 | , { | |
221 | connectSeparatedPoints: true, | |
222 | drawPoints: true, | |
223 | pointSize: 3, | |
224 | highlightCircleSize: 5, | |
225 | dateWindow: [0,3] | |
226 | } | |
227 | ); | |
228 | </script> | |
229 | ||
230 | <table><tr> | |
231 | <td valign=top> | |
232 | Index | |
233 | <pre> | |
234 | 0 | |
235 | 1 | |
236 | 2 | |
237 | 3 | |
238 | 4 | |
239 | 5 | |
240 | 6 | |
241 | 7 | |
242 | 8</pre> | |
243 | </td> | |
244 | <td valign=top> | |
245 | (CSV) | |
246 | <pre>x,A,B | |
247 | 0,2,1 | |
248 | 1,3,2 | |
249 | 2,3,1 | |
250 | 3,, | |
251 | 4,4, | |
252 | 5,3, | |
253 | 6,3, | |
254 | 7,3, | |
255 | 8,4,2</pre> | |
256 | </td> | |
257 | <td valign=top style="padding-left: 25px;"> | |
258 | (native) | |
259 | <pre>[ | |
260 | [0, 2, 1], | |
261 | [1, 3, 2], | |
262 | [2, 3, 1], | |
263 | [3, null, null], | |
264 | [4, 4, null], | |
265 | [5, 3, null], | |
266 | [6, 3, null], | |
267 | [7, 3, null], | |
268 | [8, 4, 2] ]</pre> | |
269 | </td> | |
270 | </tr></table> | |
c6a0ebba | 271 | |
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272 | </body> |
273 | </html> |