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@biovisualize
Created September 6, 2011 14:44
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Drag and drop with D3
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script>
<title>Drag And Drop</title>
</head>
<body>
<div id="viz"></div>
<script type="text/javascript">
var vizSVG = d3.select("#viz")
.append("svg:svg")
.attr("width", 400)
.attr("height", 300);
vizSVG.append("svg:circle")
.attr("id", "blueCircle")
.attr("cx", 50)
.attr("cy", 140)
.attr("r", 40)
.attr("fill", "blue")
.call(d3.behavior.drag().on("drag", move));
vizSVG.append("svg:circle")
.attr("id", "redCircle")
.attr("cx", 100)
.attr("cy", 140)
.attr("r", 40)
.attr("fill", "red")
.call(d3.behavior.drag().on("drag", move));
function move(){
this.parentNode.appendChild(this);
var dragTarget = d3.select(this);
dragTarget
.attr("cx", function(){return d3.event.dx + parseInt(dragTarget.attr("cx"))})
.attr("cy", function(){return d3.event.dy + parseInt(dragTarget.attr("cy"))});
};
</script>
</body>
</html>
@biovisualize
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It was left as an exercise ;) Sorry I wrote this code 2 years ago when I was learning. I would be glad to help if you need, on the D3 Google Groups

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