This is an answer from this google groups questionn. It boils down to change in the behaviour of drag and zoom from V2 to V3. The links in the google groups answers provide more information on this.
Created
January 12, 2015 11:47
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> | |
<title>Examples</title> | |
<meta name="description" content=""> | |
<meta name="keywords" content=""> | |
<link href="" rel="stylesheet"> | |
<style type="text/css"> | |
</style> | |
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
</head> | |
<body> | |
<div id="chart"></div> | |
</body> | |
<script type="text/javascript"> | |
var w = 500, | |
h = 500, | |
fill = d3.scale.category20(); | |
var vis = d3.select("#chart") | |
.append("svg") | |
.attr("width", w) | |
.attr("height", h) | |
.append('svg:g') | |
.call(d3.behavior.zoom().on("zoom", redraw)) | |
.append('g'); | |
vis.append('svg:rect') | |
.attr('width', w) | |
.attr('height', h) | |
.attr('fill', 'white') | |
.attr("pointer-events", "all"); | |
var drag = d3.behavior.drag() | |
.origin(function(d) { return d; }) | |
.on("dragstart", dragstarted) | |
.on("drag", dragged) | |
.on("dragend", dragended); | |
var force = d3.layout.force() | |
.charge(-120) | |
.linkDistance(30) | |
.size([w, h]); | |
function redraw() { | |
vis.attr("transform", | |
"translate(" + d3.event.translate + ")" | |
+ " scale(" + d3.event.scale + ")"); | |
} | |
var draw = function(json) { | |
force.nodes(json.nodes) | |
.links(json.links) | |
.start(); | |
var link = vis.selectAll("line.link") | |
.data(json.links) | |
.enter().append("svg:line") | |
.attr("class", "link") | |
.style("stroke-width", function(d) { return Math.sqrt(d.value); }) | |
.attr("x1", function(d) { return d.source.x; }) | |
.attr("y1", function(d) { return d.source.y; }) | |
.attr("x2", function(d) { return d.target.x; }) | |
.attr("y2", function(d) { return d.target.y; }); | |
var node = vis.selectAll("circle.node") | |
.data(json.nodes) | |
.enter().append("svg:circle") | |
.attr("class", "node") | |
.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }) | |
.attr("r", 5) | |
.style("fill", function(d) { return fill(d.group); }) | |
.call(drag); | |
node.append("svg:title") | |
.text(function(d) { return d.name; }); | |
vis.style("opacity", 1e-6) | |
.transition() | |
.duration(1000) | |
.style("opacity", 1); | |
force.on("tick", function() { | |
link.attr("x1", function(d) { return d.source.x; }) | |
.attr("y1", function(d) { return d.source.y; }) | |
.attr("x2", function(d) { return d.target.x; }) | |
.attr("y2", function(d) { return d.target.y; }); | |
node.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }); | |
}); | |
}; | |
function dragstarted(d) { | |
d3.event.sourceEvent.stopPropagation(); | |
//d3.select(this).classed("dragging", true); | |
} | |
function dragged(d) { | |
d3.select(this).attr("cx", d.x = d3.event.x).attr("cy", d.y = d3.event.y); | |
} | |
function dragended(d) { | |
force.resume(); | |
//d3.select(this).classed("dragging", false); | |
} | |
var data = 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| |
draw(data); | |
</script> | |
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