4 <meta http-equiv=
"X-UA-Compatible" content=
"IE=EmulateIE7; IE=EmulateIE9">
5 <title>Benchmarking for Plots with Many Points
</title>
7 <script type=
"text/javascript" src=
"../excanvas.js"></script>
9 <script type=
"text/javascript" src=
"../strftime/strftime-min.js"></script>
10 <script type=
"text/javascript" src=
"../rgbcolor/rgbcolor.js"></script>
11 <script type=
"text/javascript" src=
"../dygraph-canvas.js"></script>
12 <script type=
"text/javascript" src=
"../dygraph.js"></script>
15 <p>Plot which can be easily generated with different numbers of points for
16 benchmarking/profiling and improving performance of dygraphs.
</p>
18 <input type=
"text" id=
"num_points_input" size=
"20"
19 onchange=
"updatePlot();"></p>
21 <input type=
"text" id=
"num_series_input" size=
"20"
22 onchange=
"updatePlot();"></p>
23 <p>Roll period (in points):
24 <input type=
"text" id=
"roll_period_input" size=
"20"
25 onchange=
"updatePlot();"></p>
29 <div id=
"message"></div>
31 <script type=
"text/javascript">
34 updatePlot = function() {
35 document.getElementById('message').innerHTML =
"";
36 var plotDiv = document.getElementById('plot');
37 plotDiv.innerHTML = 'Redrawing...';
39 parseInt(document.getElementById('num_points_input').value);
41 parseInt(document.getElementById('num_series_input').value);
45 var xmax =
2.0 * Math.PI;
47 var delta = (xmax - xmin) / (numPoints -
1);
49 for (var i =
0; i < numPoints; ++i) {
50 var x = xmin + delta * i;
52 for (var j =
0; j < numSeries; j++) {
53 var y = Math.sin(x + (j * adj));
59 for (var j =
0; j < numSeries; j++) {
60 labels.push(
"sin(x + " + (j*adj) +
")");
62 var rollPeriod = parseInt(
63 document.getElementById('roll_period_input').value);
64 var opts = {labels: labels, rollPeriod: rollPeriod};
65 var start = new Date();
66 plot = new Dygraph(plotDiv, data, opts);
68 document.getElementById('message').innerHTML =
69 "completed in " + (end - start) +
" milliseconds.";
72 document.getElementById('num_points_input').value = '
100';
73 document.getElementById('num_series_input').value = '
1';
74 document.getElementById('roll_period_input').value = '
1';