projects / dygraphs.git / blame
| Commit | Line | Data |
|---|---|---|
| 6bef45dc DV |
1 | <html> |
| 2 | <head> | |
| 3 | <title>dygraphs Equation Plotter</title> | |
| 4 | <!--[if IE]> | |
| 5 | <script type="text/javascript" src="excanvas.js"></script> | |
| 6 | <![endif]--> | |
| 7 | <script type="text/javascript" src="../dygraph-combined.js"></script> | |
| 8 | <script type="text/javascript" src="../dygraph-canvas.js"></script> | |
| 9 | <script type="text/javascript" src="../dygraph.js"></script> | |
| 10 | <script type="text/javascript"> | |
| 11 | function plot() { | |
| 12 | var eq = document.getElementById("eq").value; | |
| 13 | eval("fn = " + eq); | |
| 14 | ||
| 15 | var graph = document.getElementById("graph"); | |
| 16 | var width = parseInt(graph.style.width); | |
| 17 | var x1 = parseFloat(document.getElementById("x1").value); | |
| 18 | var x2 = parseFloat(document.getElementById("x2").value); | |
| 19 | var xs = 1.0 * (x2 - x1) / width; | |
| 20 | ||
| 21 | var data = []; | |
| 22 | for (var i = 0; i < width; i++) { | |
| 23 | var x = x1 + i * xs; | |
| 24 | var y = fn(x); | |
| 25 | data.push([x, y]); | |
| 26 | } | |
| 27 | ||
| 28 | g = new Dygraph(graph, data, { labels: ["x", "y"] }); | |
| 29 | } | |
| 30 | </script> | |
| 31 | </head> | |
| 32 | <body> | |
| 33 | <p><b>Equation: </b><br/> | |
| 34 | <textarea cols="40" rows="10" id="eq">function(x) { | |
| 35 | return Math.sin(x); | |
| 36 | }</textarea> | |
| 37 | </p> | |
| 38 | <p><b>x range: </b> <input type=text width="5" id="x1" value="-10" /> | |
| 39 | to <input type=text width="5" id="x2" value="10" /></p> | |
| 40 | <p><input type=button value="Plot" onClick="plot()" /></p> | |
| 41 | ||
| 42 | <div id=graph style="width:1024px; height:400px;"></div> | |
| 43 | </body> | |
| 44 | </html> |