[dygraphs.git] / tests / plotter.html

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
    <title>dygraphs Equation Plotter</title>
    <!--[if IE]>
    <script type="text/javascript" src="../excanvas.js"></script>
    <![endif]-->
    <!--
    For production (minified) code, use:
    <script type="text/javascript" src="dygraph-combined.js"></script>
    -->
    <script type="text/javascript" src="../dygraph-dev.js"></script>

    <script type="text/javascript">
      function plot() {
        var eq = document.getElementById("eq").value;
        eval("fn = " + eq);

        var graph = document.getElementById("graph_div");
        var width = parseInt(graph.style.width);
        var x1 = parseFloat(document.getElementById("x1").value);
        var x2 = parseFloat(document.getElementById("x2").value);
        var xs = 1.0 * (x2 - x1) / width;

        var data = [];
        for (var i = 0; i < width; i++) {
          var x = x1 + i * xs;
          var y = fn(x);
          var row = [x];
          if (y.length > 0) {
            for (var j = 0; j < y.length; j++) {
              row.push(y[j]);
            }
          } else {
            row.push(y);
          }
          data.push(row);
        }

        g = new Dygraph(graph, data);
      }

      function preset() {
        var sel = document.getElementById("presets").selectedIndex;
        var id = document.getElementById("presets").options[sel].id;
        var presets = {
          'id': [ -10, 10, 'function(x) {\n  return x;\n}' ],
          'sine': [ -10, 10, 'function(x) {\n  return Math.sin(x);\n}' ],
          'taylor': [ -3, 3, 'function(x) {\n  return [Math.cos(x), 1 - x*x/2 + x*x*x*x/24];\n}' ],
          'sawtooth': [-10, 10, 'function(x) {\n  var y = 0;\n  for (var i = 1; i < 20; i+=2) {\n    y += Math.sin(i * x)/i;\n  }\n  var final = 1 - 2*(Math.abs(Math.floor(x / Math.PI)) % 2);\n  return [4/Math.PI * y, final];\n}' ]
        };

        if (id == "custom") { return; }
        document.getElementById("x1").value = presets[id][0];
        document.getElementById("x2").value = presets[id][1];
        document.getElementById("eq").value = presets[id][2];
        plot();
      }
    </script>
  </head>
  <body onload="preset()">
    <p><b>Equation: </b><br/>
    <textarea cols="40" rows="10" id="eq">function(x) {
  return [0.1 * x, 0.1 * x + Math.sin(x), 0.1*x + Math.cos(x)];
}</textarea><br/>
<b>Preset functions:</b> <select id=presets onchange="preset()">
<option id=custom>(custom)</option>
<option id=id>Identity</option>
<option id=sine>Sine Wave</option>
<option id=taylor>Taylor series</option>
<option selected id=sawtooth>Sawtooth</option>
</select>
    </p>

    <p><b>x range: </b> <input type=text width="5" id="x1" value="-10" />
    to <input type=text width="5" id="x2" value="10" /></p>
    <p><input type=button value="Plot" onClick="plot()" /></p>

    <div id="graph_div" style="width:1024px; height:400px;"></div>
  </body>
</html>
Commit	Line	Data
54425b14	1	<!DOCTYPE html>
6bef45dc DV	2	<html>
6bef45dc DV	3	<head>
10494b48	4	<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7; IE=EmulateIE9">
6bef45dc DV	5	<title>dygraphs Equation Plotter</title>
6bef45dc DV	6	<!--[if IE]>
a2b2c3a1	7	<script type="text/javascript" src="../excanvas.js"></script>
6bef45dc	8	<![endif]-->
7e5ddc94 DV	9	<!--
	10	For production (minified) code, use:
	11	<script type="text/javascript" src="dygraph-combined.js"></script>
	12	-->
	13	<script type="text/javascript" src="../dygraph-dev.js"></script>
	14
6bef45dc DV	15	<script type="text/javascript">
	16	function plot() {
	17	var eq = document.getElementById("eq").value;
	18	eval("fn = " + eq);
	19
d16579a0	20	var graph = document.getElementById("graph_div");
6bef45dc DV	21	var width = parseInt(graph.style.width);
	22	var x1 = parseFloat(document.getElementById("x1").value);
	23	var x2 = parseFloat(document.getElementById("x2").value);
	24	var xs = 1.0 * (x2 - x1) / width;
	25
	26	var data = [];
	27	for (var i = 0; i < width; i++) {
	28	var x = x1 + i * xs;
	29	var y = fn(x);
e82114b2 DV	30	var row = [x];
	31	if (y.length > 0) {
	32	for (var j = 0; j < y.length; j++) {
	33	row.push(y[j]);
	34	}
	35	} else {
	36	row.push(y);
	37	}
	38	data.push(row);
6bef45dc DV	39	}
6bef45dc DV	40
e82114b2 DV	41	g = new Dygraph(graph, data);
	42	}
	43
	44	function preset() {
	45	var sel = document.getElementById("presets").selectedIndex;
	46	var id = document.getElementById("presets").options[sel].id;
	47	var presets = {
	48	'id': [ -10, 10, 'function(x) {\n return x;\n}' ],
	49	'sine': [ -10, 10, 'function(x) {\n return Math.sin(x);\n}' ],
	50	'taylor': [ -3, 3, 'function(x) {\n return [Math.cos(x), 1 - xx/2 + xxxx/24];\n}' ],
	51	'sawtooth': [-10, 10, 'function(x) {\n var y = 0;\n for (var i = 1; i < 20; i+=2) {\n y += Math.sin(i * x)/i;\n }\n var final = 1 - 2(Math.abs(Math.floor(x / Math.PI)) % 2);\n return [4/Math.PI y, final];\n}' ]
	52	};
	53
	54	if (id == "custom") { return; }
	55	document.getElementById("x1").value = presets[id][0];
	56	document.getElementById("x2").value = presets[id][1];
	57	document.getElementById("eq").value = presets[id][2];
	58	plot();
6bef45dc DV	59	}
	60	</script>
	61	</head>
e82114b2	62	<body onload="preset()">
6bef45dc DV	63	<p><b>Equation: </b><br/>
6bef45dc DV	64	<textarea cols="40" rows="10" id="eq">function(x) {
e82114b2 DV	65	return [0.1 * x, 0.1 * x + Math.sin(x), 0.1*x + Math.cos(x)];
	66	}</textarea><br/>
	67	<b>Preset functions:</b> <select id=presets onchange="preset()">
	68	<option id=custom>(custom)</option>
	69	<option id=id>Identity</option>
	70	<option id=sine>Sine Wave</option>
	71	<option id=taylor>Taylor series</option>
	72	<option selected id=sawtooth>Sawtooth</option>
	73	</select>
6bef45dc	74	</p>
e82114b2	75
6bef45dc DV	76	<p><b>x range: </b> <input type=text width="5" id="x1" value="-10" />
	77	to <input type=text width="5" id="x2" value="10" /></p>
	78	<p><input type=button value="Plot" onClick="plot()" /></p>
	79
d16579a0	80	<div id="graph_div" style="width:1024px; height:400px;"></div>
6bef45dc DV	81	</body>
6bef45dc DV	82	</html>