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1 | <html> |
2 | <head> | |
e5152598 | 3 | <title>isZoomedIgnoreProgrammaticZoom Flag</title> |
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4 | <!--[if IE]> |
5 | <script type="text/javascript" src="../excanvas.js"></script> | |
6 | <![endif]--> | |
7 | <script type="text/javascript" src="../strftime/strftime-min.js"></script> | |
8 | <script type="text/javascript" src="../rgbcolor/rgbcolor.js"></script> | |
9 | <script type="text/javascript" src="../dygraph-canvas.js"></script> | |
10 | <script type="text/javascript" src="../dygraph.js"></script> | |
11 | <script type="text/javascript" src="data.js"></script> | |
12 | </head> | |
13 | <body> | |
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14 | <!-- Ensure that the documentation generator picks us up: {isZoomedIgnoreProgrammaticZoom:} --> |
15 | <h1>isZoomedIgnoreProgrammaticZoom Option</h1> | |
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16 | <p> |
17 | By default, when the <code>dateWindow</code> or <code>updateOptions</code> | |
18 | of a chart is changed programmatically by a call to <code>updateOptions</code> | |
19 | the zoomed flags (<code>isZoomed</code>) are changed. This is the same | |
20 | as manually zooming in using the mouse. | |
21 | </p> | |
22 | <p> | |
23 | Sometimes it may be desirable to change the display of the chart by | |
24 | manipulating the <code>dateWindow</code> and <code>valueRange</code> | |
25 | options but without changing the zoomed flags, for example where manual | |
26 | zooming is still required but where it is also desired that the zoomed | |
27 | flags drive display elements, but only for manual zooming. | |
28 | </p> | |
29 | <p> | |
e5152598 | 30 | In this case <code>isZoomedIgnoreProgrammaticZoom</code> may be specified along with |
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31 | either the <code>dateWindow</code> or <code>valueRange</code> values to |
32 | <code>updateOptions</code> and the zoomed flags will remain unaffected. | |
33 | </p> | |
34 | <p> | |
35 | The chart below may be manipulated to change the <code>updateOptions</code> | |
36 | using the Max and Min Y axis buttons and the <code>dateWindow</code> | |
37 | by using the Max and Min X axis buttons. | |
38 | </p> | |
39 | <p> | |
40 | Toggle the check box below to determine the difference in operation of the zoom flags | |
41 | when the date and value windows of the chart are changed using the arrows underneath. | |
42 | </p> | |
e5152598 | 43 | <p><input id="isZoomedIgnoreProgrammaticZoom" type="checkbox" checked=true />Do not change zoom flags (<code>isZoomedIgnoreProgrammaticZoom</code>)</p> |
485efa38 | 44 | |
81856f70 | 45 | <div> |
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46 | <div style="float: left"> |
47 | <p> | |
48 | Max Y Axis: | |
49 | <input type="button" value="↑" onclick="adjustTop(+1)" /> | |
50 | <input type="button" value="↓" onclick="adjustTop(-1)" /> | |
51 | </p> | |
52 | <p> | |
53 | Min Y Axis: | |
54 | <input type="button" value="↑" onclick="adjustBottom(+1)" /> | |
55 | <input type="button" value="↓" onclick="adjustBottom(-1)" /> | |
56 | </p> | |
57 | <p> | |
58 | Min X Axis: | |
59 | <input type="button" value="←" onclick="adjustFirst(-100000000)" /> | |
60 | <input type="button" value="→" onclick="adjustFirst(+100000000)" /> | |
61 | </p> | |
62 | <p> | |
63 | Max X Axis: | |
64 | <input type="button" value="←" onclick="adjustLast(-100000000)" /> | |
65 | <input type="button" value="→" onclick="adjustLast(+100000000)" /> | |
66 | </p> | |
67 | </div> | |
68 | <div id="div_g" style="width: 600px; height: 300px; float: left"></div> | |
69 | <div style="float: left"> | |
81856f70 | 70 | |
485efa38 | 71 | </div> |
81856f70 | 72 | </div> |
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73 | <div style="display: inline-block"> |
74 | <h4> Zoomed Flags</h4> | |
75 | <p>Zoomed: <span id="zoomed">False</span></p> | |
76 | <p>Zoomed X: <span id="zoomedX">False</span></p> | |
77 | <p>Zoomed Y: <span id="zoomedY">False</span></p> | |
78 | <h4>Window coordinates (in dates and values):</h4> | |
79 | <div id="xdimensions"></div> | |
80 | <div id="ydimensions"></div> | |
81856f70 | 81 | </div> |
485efa38 | 82 | |
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83 | <script type="text/javascript"> |
84 | g = new Dygraph( | |
85 | document.getElementById("div_g"), | |
86 | NoisyData, | |
87 | { | |
88 | errorBars: true, | |
89 | zoomCallback : function(minDate, maxDate, yRange) { | |
90 | showDimensions(minDate, maxDate, yRange); | |
91 | }, | |
92 | drawCallback: function(me, initial) { | |
93 | document.getElementById("zoomed").innerHTML = "" + me.isZoomed(); | |
94 | document.getElementById("zoomedX").innerHTML = "" + me.isZoomed("x"); | |
95 | document.getElementById("zoomedY").innerHTML = "" + me.isZoomed("y"); | |
96 | var x_range = me.xAxisRange() | |
97 | var elem = document.getElementById("xdimensions") | |
98 | elem.innerHTML = "dateWindow : [" + x_range[0] + ", "+ x_range[1] + "]" | |
99 | } | |
100 | } | |
101 | ) | |
102 | ||
103 | // Pull an initial value for logging. | |
104 | var minDate = g.xAxisRange()[0]; | |
105 | var maxDate = g.xAxisRange()[1]; | |
106 | var minValue = g.yAxisRange()[0]; | |
107 | var maxValue = g.yAxisRange()[1]; | |
108 | showDimensions(minDate, maxDate, [minValue, maxValue]); | |
109 | ||
110 | function showDimensions(minDate, maxDate, yRanges) { | |
111 | showXDimensions(minDate, maxDate); | |
112 | showYDimensions(yRanges); | |
113 | } | |
114 | ||
115 | function getNoChange() { | |
116 | var options = {} | |
e5152598 | 117 | var elem = document.getElementById("isZoomedIgnoreProgrammaticZoom") |
81856f70 | 118 | if (elem.checked) { |
e5152598 | 119 | options.isZoomedIgnoreProgrammaticZoom = true |
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120 | } |
121 | return options | |
122 | } | |
123 | ||
124 | function adjustTop(value) { | |
125 | options = getNoChange() | |
126 | maxValue += value | |
127 | options.valueRange = [minValue, maxValue] | |
128 | console.log(options) | |
129 | g.updateOptions(options) | |
130 | } | |
131 | ||
132 | function adjustBottom(value) { | |
133 | options = getNoChange() | |
134 | minValue += value | |
135 | options.valueRange = [minValue, maxValue] | |
136 | console.log(options) | |
137 | g.updateOptions(options) | |
138 | } | |
139 | ||
140 | function adjustFirst(value) { | |
141 | options = getNoChange() | |
142 | minDate += value | |
143 | options.dateWindow = [minDate, maxDate] | |
144 | console.log(options) | |
145 | g.updateOptions(options) | |
146 | } | |
147 | ||
148 | function adjustLast(value) { | |
149 | options = getNoChange() | |
150 | maxDate += value | |
151 | options.dateWindow = [minDate, maxDate] | |
152 | g.updateOptions(options) | |
153 | } | |
154 | ||
155 | function showXDimensions(first, second) { | |
156 | var elem = document.getElementById("xdimensions"); | |
485efa38 | 157 | elem.innerHTML = "dateWindow: [" + first + ", "+ second + "]"; |
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158 | } |
159 | ||
160 | function showYDimensions(ranges) { | |
161 | var elem = document.getElementById("ydimensions"); | |
485efa38 | 162 | elem.innerHTML = "valueRange: [" + ranges + "]"; |
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163 | } |
164 | ||
165 | </script> | |
166 | </body> | |
167 | </html> |