File: zooming.html

package info (click to toggle)
flot 0.6%2Bdebian-2
  • links: PTS, VCS
  • area: main
  • in suites: squeeze
  • size: 504 kB
  • ctags: 147
  • sloc: makefile: 14
file content (98 lines) | stat: -rw-r--r-- 3,429 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Flot Examples</title>
    <link href="layout.css" rel="stylesheet" type="text/css"></link>
    <!--[if IE]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
    <script language="javascript" type="text/javascript" src="../jquery.js"></script>
    <script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
    <script language="javascript" type="text/javascript" src="../jquery.flot.selection.js"></script>
 </head>
    <body>
    <h1>Flot Examples</h1>

    <div style="float:left">
      <div id="placeholder" style="width:500px;height:300px"></div>
    </div>
    
    <div id="miniature" style="float:left;margin-left:20px;margin-top:50px">
      <div id="overview" style="width:166px;height:100px"></div>

      <p id="overviewLegend" style="margin-left:10px"></p>
    </div>

    <p style="clear:left"> The selection support makes 
      pretty advanced zooming schemes possible. With a few lines of code,
      the small overview plot to the right has been connected to the large
      plot. Try selecting a rectangle on either of them.</p>

<script id="source">
$(function () {
    // setup plot
    function getData(x1, x2) {
        var d = [];
        for (var i = 0; i <= 100; ++i) {
            var x = x1 + i * (x2 - x1) / 100;
            d.push([x, Math.sin(x * Math.sin(x))]);
        }

        return [
            { label: "sin(x sin(x))", data: d }
        ];
    }

    var options = {
        legend: { show: false },
        series: {
            lines: { show: true },
            points: { show: true }
        },
        yaxis: { ticks: 10 },
        selection: { mode: "xy" }
    };

    var startData = getData(0, 3 * Math.PI);
    
    var plot = $.plot($("#placeholder"), startData, options);

    // setup overview
    var overview = $.plot($("#overview"), startData, {
        legend: { show: true, container: $("#overviewLegend") },
        series: {
            lines: { show: true, lineWidth: 1 },
            shadowSize: 0
        },
        xaxis: { ticks: 4 },
        yaxis: { ticks: 3, min: -2, max: 2 },
        grid: { color: "#999" },
        selection: { mode: "xy" }
    });

    // now connect the two
    
    $("#placeholder").bind("plotselected", function (event, ranges) {
        // clamp the zooming to prevent eternal zoom
        if (ranges.xaxis.to - ranges.xaxis.from < 0.00001)
            ranges.xaxis.to = ranges.xaxis.from + 0.00001;
        if (ranges.yaxis.to - ranges.yaxis.from < 0.00001)
            ranges.yaxis.to = ranges.yaxis.from + 0.00001;
        
        // do the zooming
        plot = $.plot($("#placeholder"), getData(ranges.xaxis.from, ranges.xaxis.to),
                      $.extend(true, {}, options, {
                          xaxis: { min: ranges.xaxis.from, max: ranges.xaxis.to },
                          yaxis: { min: ranges.yaxis.from, max: ranges.yaxis.to }
                      }));
        
        // don't fire event on the overview to prevent eternal loop
        overview.setSelection(ranges, true);
    });
    $("#overview").bind("plotselected", function (event, ranges) {
        plot.setSelection(ranges);
    });
});
</script>

 </body>
</html>