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Answer 1

+1 A:

You could modify flot. I've made changes to the flot code before. It's fairly well-written. There's a google group if you get stuck.

Or you could just learn how to use Canvas, which is what flot uses.

Nosredna 2009-06-05 00:50:33

Answer 2

+4 A:

Thinking outside the box (since the box that is flot is unfamiliar to me), you could just cover the graph with a div which slow recedes and displays the line. Shrinking a div in javascript is a trivial task even without third party libraries.

Edit:

I had to see how easy it was, so I threw this together in about 10 mins.

<html>
<head>
</head>
<body>

<div style="width:480px;height:480px;position:relative;">
<img onload="setTimeout(function(){reduce();}, interval);" src="http://images.freshmeat.net/editorials/r_intro/images/line-graph-1.jpg" />
<div id="dvCover" style="position:absolute;width:370px;height:320px;background-color:white;border:solid 1px white;top:70px;left:70px;"></div>color:white;border:solid 1px blue;top:70px;left:70px;"></div>
</div>

<script type="text/javascript">
var step = 3;
var interval = 20;
var cover = document.getElementById("dvCover");
var currentWidth = 370;
var currentLeft = 70;
setTimeout(function(){reduce();}, interval);

function reduce()
{
    if (currentWidth > 0)
    {
        currentWidth -= step;
        currentLeft += step;
        cover.style.width = currentWidth + "px";
        cover.style.left = currentLeft + "px";

        setTimeout(function(){reduce();}, interval);
    }
    else
    {
        cover.style.display = "none";
    }
}
</script>

</body>
</html>

Joel Potter 2009-06-05 00:55:27

Very simple, yet impressive +1

ichiban 2009-06-05 01:51:02

That's an awesome idea. Trouble is, the overlaid div would obscure the lines on the graph. But hey, it's a lot better than nothing!

jonathanconway 2009-06-05 02:04:13

@Jonathan: Depending on the complexity of your graphs background, you might be able to put a matching background on the overlay div.

Joel Potter 2009-06-05 02:22:56

@Joel Potter, yeah I thought of doing that, but it wouldn't work because ranges can be quite variable.But I'm thinking I'll just do away with the lines, and only show the plot above a white background. May look nicer anyway.

jonathanconway 2009-06-05 02:38:51

Answer 3

+8 A:

Here's a simple example using Flot

<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.pack.js"></script><![endif]-->
<script language="javascript" type="text/javascript" src="../jquery.js"></script>
<script language="javascript" type="text/javascript" src="../jquery.flot.js"></script>
</head>
<body>
<h1>Animated Flot Example</h1>
<div id="placeholder" style="width:600px;height:300px;"></div>
<script id="source" language="javascript" type="text/javascript">
$(function () {
    var linePoints = [[0, 3], [4, 8], [8, 5], [9, 13]];
    var i = 0;
    var arr = [[]];
    var timer = setInterval(function(){
     arr[0].push(linePoints[i]);
     $.plot($("#placeholder"), arr);
     i++;
     if(i === linePoints.length)
     clearInterval(timer);
    },300);
});
</script>
 </body>
</html>

Jose Basilio 2009-06-05 01:43:02

Uhmm...Why didn't I think of that +1

ichiban 2009-06-05 01:51:44

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Animated line graph in Javascript?

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