Develop Reference

D3.js network graph

Hi I have this nice network graph going. The node that says "scanner" I am trying to make that radius bigger than the other nodes and I want the scanner to be printed on the node while the other nodes have the hover feature. I am struggling since the nodes have to be linked together in order for it to work cohesively. Thank you in advance, looking forward to how you tackle this issue.
var graph = {
"nodes":[
{"name":" Scanner","group":1},
{"name":"Chemical 1 ","group":1},
{"name":"Chemical 2","group":1},
{"name":"Chemical 3","group":1},
{"name":"Chemical 4","group":1}
],
"links":[
{"source":0,"target":1,"value":1},
{"source":0,"target":2,"value":1},
{"source":0,"target":3,"value":1},
{"source":0,"target":4,"value":1},
{"source":0,"target":0,"value":1}
]
};
var width = 1000,
height = 1000;
var force = d3.layout.force()
.charge(-300)
.linkDistance(300)
.size([width, height]);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var drawGraph = function(graph) {
force
.nodes(graph.nodes)
.links(graph.links)
.start();
var link = svg.selectAll(".link")
.data(graph.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var gnodes = svg.selectAll('g.gnode')
.data(graph.nodes)
.enter()
.append('g')
.classed('gnode', true);
var node = gnodes.append("circle")
.attr("class", "node")
.attr("r", 25)
.on("mouseover", function(d)
{
d3.select(labels[0][d.index]).style("visibility","visible")
})
.on("mouseout", function(d)
{
d3.select(labels[0][d.index]).style("visibility","hidden")
})
.call(force.drag);
var labels = gnodes.append("text")
.text(function(d) { return d.name; })
.style("visibility", "hidden");
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; });
gnodes.attr("transform", function(d) {
return 'translate(' + [d.x, d.y] + ')';
});
});
};
drawGraph(graph);
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.nodeDetail {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
.text {
font: 12px sans-serif;
pointer-events: none; }
.node {
stroke:#fff;
stroke-width:3px;
fill:#2E8B57;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>

Larger radius for "scanner" circle
d3.js selection.attr accepts a function as the second parameter, allowing to set different values according to the data.
In this function, you should check whether d.name is "Scanner", and return a radius value accordingly.
.attr("r", function(d) { return d.name === 'Scanner'? 40 : 25; })
Always display the label for Scanner
Similarly, selection.style setting visibility for labels should be initialized in a function checking data value:
.style("visibility", function(d) { return d.name === 'Scanner'? 'visible' : 'hidden'; });
In order to have the mouseover and mouseout event listeners only applying to the other nodes, use selection.filter:
.filter(function(d) { return d.name !== 'Scanner'})
.on("mouseover", function(d)
// ...
Demo
The snippet below illustrates the solution.
Remark: The leading space character scanner node found in the question has been removed in this demo : "Scanner" instead of " Scanner"
var graph = {
"nodes":[
{"name":"Scanner","group":1},
{"name":"Chemical 1 ","group":1},
{"name":"Chemical 2","group":1},
{"name":"Chemical 3","group":1},
{"name":"Chemical 4","group":1}
],
"links":[
{"source":0,"target":1,"value":1},
{"source":0,"target":2,"value":1},
{"source":0,"target":3,"value":1},
{"source":0,"target":4,"value":1},
{"source":0,"target":0,"value":1}
]
};
var width = 1000,
height = 1000;
var force = d3.layout.force()
.charge(-300)
.linkDistance(300)
.size([width, height]);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var drawGraph = function(graph) {
force
.nodes(graph.nodes)
.links(graph.links)
.start();
var link = svg.selectAll(".link")
.data(graph.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var gnodes = svg.selectAll('g.gnode')
.data(graph.nodes)
.enter()
.append('g')
.classed('gnode', true);
var node = gnodes.append("circle")
.attr("class", "node")
.attr("r", function(d) { return d.name === 'Scanner'? 40 : 25; })
.call(force.drag)
.filter(function(d) { return d.name !== 'Scanner'})
.on("mouseover", function(d)
{
d3.select(labels[0][d.index]).style("visibility","visible")
})
.on("mouseout", function(d)
{
d3.select(labels[0][d.index]).style("visibility","hidden")
})
var labels = gnodes.append("text")
.text(function(d) { return d.name; })
.style("visibility", function(d) { return d.name === 'Scanner'? 'visible' : 'hidden'; });
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; });
gnodes.attr("transform", function(d) {
return 'translate(' + [d.x, d.y] + ')';
});
});
};
drawGraph(graph);
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.nodeDetail {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
.text {
font: 12px sans-serif;
pointer-events: none; }
.node {
stroke:#fff;
stroke-width:3px;
fill:#2E8B57;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>

Hide nodes on Mousedown in d3

I have an HTML file that reads a JSON graph file and displays in the browser
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
var width = 1280,
height = 960;
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("data.json", function(error, graph) {
if (error) throw error;
force
.nodes(graph.nodes)
.links(graph.links)
.start();
var link = svg.selectAll(".link")
.data(graph.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
var node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("circle")
.attr("class", "node")
.attr("r", 5)
.style("fill", function(d) { return color(d.fill); })
.call(force.drag);
node.append("title")
.text(function(d) { return d.id; });
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; });
});
});
</script>
I have an attribute for each node called clique_nodes which is a list of nodes that need to displayed on mousedown (hide every other node in the graph on mousedown). How do I do this?

You should attach 'mousedown' event handler to your nodes where you filter the "clique_node" attribute and make their opacity 0.
var gnodes = svg.selectAll('g.gnode')
.data(graph.nodes)
.enter()
.append('g')
.classed('gnode', true)
.attr('clique_node', function(d,i){
if(d.attr === "clique_node"){
return true;
}
})
.on("mousedown", function(d,i){
d3.selectAll('.gnode').filter(function(d) {
if(d.attr !== "clique_node"){return d;}
})
.attr("opacity",0);
d3.selectAll('.link').filter(function(d) {
if(d.source.attr !== "clique_node" || d.target.attr !== "clique_node"){return d;}
})
.attr("opacity",0);
});
See the fiddle: https://jsfiddle.net/mcm3p2e9/1/

Circle Pack & Force layout on same page?

I am very new to d3 and svg, this may sound very naive.
I have one force layout graph and one Circle pack and want to show them both on one page side by side. I went to the "Multiple layouts on same page (multiple force layouts same page)" questions but not able to understand how can I put these layout in div element.
This one is Force layout -
<!DOCTYPE html>
<meta charset="utf-8">
<body>
<style>
h3{
border: 1px solid green ;
}
.link {
stroke: #666;
stroke-opacity: 0.1;
stroke-width: 1.5px;
}
.node circle {
stroke: #fff;
opacity: 0.9;
stroke-width: 1.5px;
}
.node:not(:hover) .nodetext {
display: none;
}
text {
font: 17px serif;
opacity: 0.9;
pointer-events: none;
fill : red;
}
</style>
<script src=http://d3js.org/d3.v3.min.js></script>
<script>
var links= [];
var nodes= [];
var width = 800
height = 400;
var color = d3.scale.category20();
var force = d3.layout.force()
.nodes(d3.values(nodes))
.links(links)
.size([width, height])
.linkStrength(0.1)
.linkDistance(150)
.charge(-150)
.friction(0.6)
.gravity(0.5);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("sample1.json", function(error, data) {
nodes = data.nodes;
links = data.links;
force
.nodes(nodes)
.links(links)
.on("tick", tick)
.start();
var link = svg.selectAll(".link")
.data(links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(1); });
var node = svg.selectAll(".node")
.data(nodes)
.enter().append("g")
.attr("class", "node")
.style("fill", "#7a85ec")
.style("opacity", 0.9)
.on("mouseover", mouseover)
.on("mouseout", mouseout)
.on("click",clickf)
.call(force.drag);
node.append("circle")
.attr("r", function(d) { return Math.sqrt(3*d.weight); })
node.append("svg:text")
.attr("class", "nodetext")
.attr("dx", "1.35em")
.attr("dy", "-1.35em")
.text(function(d) { return d.name });
function tick() {
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("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
}
function mouseover(d) {
var circle = d3.select(this);
node
.transition(500)
.style("opacity", function(o) {
return isConnected(o, d) ? 1.0 : 0.1 ;
})
.style("fill", function(o){
if (isEqual(o, d)){
return "red"
}
else return "#7a85ec"
})
;
link
.transition(500)
.style("stroke-opacity", function(o) {
return o.source === d || o.target === d ? 1 : 0.1;
})
;
}
function mouseout() {
var circle = d3.select(this);
node
.transition(500)
.style("opacity", "1.0")
.style("fill", "#7a85ec")
;
link
.transition(500)
.style("stroke-opacity", "0.1");
}
function clickf(d){
}
var linkedByIndex = {};
links.forEach(function(d) {
linkedByIndex[d.source.index + "," + d.target.index] = true;
});
function isConnected(a, b) {
return isConnectedAsTarget(a, b) || isConnectedAsSource(a, b) || a.index == b.index;
}
function isConnectedAsSource(a, b) {
return linkedByIndex[a.index + "," + b.index];
}
function isConnectedAsTarget(a, b) {
return linkedByIndex[b.index + "," + a.index];
}
function isEqual(a, b) {
return a.index == b.index;
}
});
</script>
</body>
This is my circle pack (sample from mbostock) -
<!DOCTYPE html>
<meta charset="utf-8">
<style>
circle {
fill: rgb(31, 119, 180);
fill-opacity: .25;
stroke: rgb(31, 119, 180);
stroke-width: 1px;
}
.leaf circle {
fill: #ff7f0e;
fill-opacity: 1;
}
text {
font: 10px sans-serif;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var diameter = 560,
format = d3.format(",d");
var pack = d3.layout.pack()
.size([diameter - 4, diameter - 4])
.value(function(d) { return d.size; });
var svg = d3.select("body").append("svg")
.attr("width", diameter)
.attr("height", diameter)
.append("g")
.attr("transform", "translate(2,2)");
d3.json("flare.json", function(error, root) {
var node = svg.datum(root).selectAll(".node")
.data(pack.nodes)
.enter().append("g")
.attr("class", function(d) { return d.children ? "node" : "leaf node"; })
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
node.append("title")
.text(function(d) { return d.name + (d.children ? "" : ": " + format(d.size)); });
node.append("circle")
.attr("r", function(d) { return d.r; });
node.filter(function(d) { return !d.children; }).append("text")
.attr("dy", ".3em")
.style("text-anchor", "middle")
.text(function(d) { return d.name.substring(0, d.r / 3); });
});
d3.select(self.frameElement).style("height", diameter + "px");
</script>
Please help me put these in one page using div.

This worked for me with the changes below. Hope this helps.
<!DOCTYPE html>
<meta charset="utf-8">
<style>
#left-div
{
width:560px;
height:560px;
border:1px solid red;
margin:10px;
display:table-cell;
}
#right-div
{
width:560px;
height:560px;
border:1px solid red;
margin:10px;
display:table-cell;
}
circle {
fill: rgb(31, 119, 180);
fill-opacity: .25;
stroke: rgb(31, 119, 180);
stroke-width: 1px;
}
.leaf circle {
fill: #ff7f0e;
fill-opacity: 1;
}
text {
font: 10px sans-serif;
}
</style>
<div id="left-div"></div>
<div id="right-div"></div>
<script src="http://d3js.org/d3.v3.min.js"></script>
<body>
<script>
var diameter = 560,
format = d3.format(",d");
var pack = d3.layout.pack()
.size([diameter - 4, diameter - 4])
.value(function(d) { return d.size; });
var svg = d3.select("#left-div").append("svg")
.attr("width", diameter)
.attr("height", diameter)
.append("g")
.attr("transform", "translate(2,2)");
d3.json("flare.json", function(error, root) {
var node = svg.datum(root).selectAll(".node")
.data(pack.nodes)
.enter().append("g")
.attr("class", function(d) { return d.children ? "node" : "leaf node"; })
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
node.append("title")
.text(function(d) { return d.name + (d.children ? "" : ": " + format(d.size)); });
node.append("circle")
.attr("r", function(d) { return d.r; });
node.filter(function(d) { return !d.children; }).append("text")
.attr("dy", ".3em")
.style("text-anchor", "middle")
.text(function(d) { return d.name.substring(0, d.r / 3); });
});
d3.select(self.frameElement).style("height", diameter + "px");
</script>
<script>
var links= [];
var nodes= [];
var width = 500
height = 500;
var color = d3.scale.category20();
var force = d3.layout.force()
.nodes(d3.values(nodes))
.links(links)
.size([width, height])
.linkStrength(0.1)
.linkDistance(150)
.charge(-150)
.friction(0.6)
.gravity(0.5);
var svg2 = d3.select("#right-div").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("sample1.json", function(error, data) {
nodes = data.nodes;
links = data.links;
force
.nodes(nodes)
.links(links)
.on("tick", tick)
.start();
var link = svg2.selectAll(".link")
.data(links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width", function(d) { return Math.sqrt(1); });
var node = svg2.selectAll(".node")
.data(nodes)
.enter().append("g")
.attr("class", "node")
.style("fill", "#7a85ec")
.style("opacity", 0.9)
.on("mouseover", mouseover)
.on("mouseout", mouseout)
.on("click",clickf)
.call(force.drag);
node.append("circle")
.attr("r", function(d) { return Math.sqrt(3*d.weight); })
node.append("svg:text")
.attr("class", "nodetext")
.attr("dx", "1.35em")
.attr("dy", "-1.35em")
.text(function(d) { return d.name });
function tick() {
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("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
}
function mouseover(d) {
var circle = d3.select(this);
node
.transition(500)
.style("opacity", function(o) {
return isConnected(o, d) ? 1.0 : 0.1 ;
})
.style("fill", function(o){
if (isEqual(o, d)){
return "red"
}
else return "#7a85ec"
})
;
link
.transition(500)
.style("stroke-opacity", function(o) {
return o.source === d || o.target === d ? 1 : 0.1;
})
;
}
function mouseout() {
var circle = d3.select(this);
node
.transition(500)
.style("opacity", "1.0")
.style("fill", "#7a85ec")
;
link
.transition(500)
.style("stroke-opacity", "0.1");
}
function clickf(d){
}
var linkedByIndex = {};
links.forEach(function(d) {
linkedByIndex[d.source.index + "," + d.target.index] = true;
});
function isConnected(a, b) {
return isConnectedAsTarget(a, b) || isConnectedAsSource(a, b) || a.index == b.index;
}
function isConnectedAsSource(a, b) {
return linkedByIndex[a.index + "," + b.index];
}
function isConnectedAsTarget(a, b) {
return linkedByIndex[b.index + "," + a.index];
}
function isEqual(a, b) {
return a.index == b.index;
}
});
</script>
Note, some of the CSS was left out from one of the graphs. Adjust that as needed. The key to getting the d3 graph to load into a div is by this code below. Notice the # within the string name of the div id.
var svg = d3.select("#left-div").append("svg")
Instead of this code below.
var svg = d3.select("body").append("svg")
The next issue that I ran into was due to a duplicate var named "svg" between both scripts, so I renamed one of them to svg2.

d3.js move node and label together

In our project I want to add cicrles dynamically when the add node button is clicked and link these circles with an arrow. But When I linked the circles labels of the circles do not move together with circles. The code is below.
JS Fiddle Link: http://jsfiddle.net/pinargocebe/kEhes/3/
How can I solve this problem?
Thanks in advance..
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml">
<ui:define name="body">
<a4j:commandButton value="Add Node" onclick="mousedown();">
</a4j:commandButton>
<div id="activationGraphDiv" style="width: 960px; height: 500px">
</div>
<rich:popupPanel id="addnode" width="100" height="100">
<h:form>
<h:outputLabel value="http://add.mode.deneme#relation" />
<a4j:commandButton value="OK"
onclick="#{rich:component('addnode')}.hide()">
</a4j:commandButton>
</h:form>
</rich:popupPanel>
<style type="text/css">
rect {
fill: none;
pointer-events: all;
}
.node {
fill: white;
stroke: pink;
stroke-width: 2;
color: black;
}
.cursor {
fill: none;
pointer-events: none;
}
.link {
stroke: #999;
}
path,line {
stroke: silver;
stroke-width: 2;
fill: none;
}
</style>
<script src="jquery.pack.js"></script>
<script type="text/javascript">
var width = 960,
height = 500;
var sourceNode,targetNode;
var fill = d3.scale.category20();
var force = d3.layout.force()
.size([width, height])
.gravity(.05)
.charge(-450)
.linkDistance(200)
.on("tick", tick);
var svg = d3.select("#activationGraphDiv").append("svg")
.attr("width", width)
.attr("height", height)
.on("mousemove", mousemove);
svg.append("rect")
.attr("width", width)
.attr("height", height);
// Draw Lines
var container = $('#activationGraphDiv');
var line = d3.svg.line()
.x(function(d) { return d[0]; })
.y(function(d) { return d[1]; })
.interpolate('linear');
svg
.append('svg:path')
.style('stroke-width', 1)
.style('stroke', 'silver')
.style('fill', 'rgba(120, 220, 54, 0.2)');
var lineData = [];
var redrawLine = function() {
var svgLines = svg.selectAll('path.my-lines')
.data(lineData)
.remove();
svgLines.enter()
.append('path')
.attr('d', line(lineData))
.attr('class', 'my-lines');
svgLines.exit()
.remove();
};
var mouseIsDown = false;
container.on('mousemove', function(e) {
if (mouseIsDown && sourceNode!=null) {
lineData[1] = [e.offsetX, e.offsetY];
redrawLine();
}})
.on('mouseup',function(){
sourceNode=null;
targetNode=null;
mouseIsDown=false;
svg.selectAll('path.my-lines')
.data(lineData)
.remove();
});
var nodes = force.nodes(),
links = force.links(),
node=svg.selectAll(".node"),
link = svg.selectAll(".link"),
text=svg.selectAll(".nodetext");
var cursor = svg.append("circle")
.attr("r", 0)
.attr("class", "cursor");
restart();
function mousemove() {
cursor.attr("transform", "translate(" + d3.mouse(this) + ")");
}
var i=0;
function mousedown() {
//x coordinate of node..
var x=document.getElementById("activationGraphDiv").offsetLeft;
//y coordinate of node..
var y=document.getElementById("activationGraphDiv").offsetTop;
var node = {x:x, y: y, name: i},
n = nodes.push(node);
i++;
console.log("node name: "+node.name);
restart();
sourceNode=null
targetNode=null;
mouseIsDown=false;
}
function tick() {
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; });
text.attr("x", function(d) {return d.x; })
.attr("y", function(d) { return d.y; });
}
svg.append("svg:defs").selectAll("marker")
.data(["arrow"])
.enter().append("svg:marker")
.attr("id", String)
.attr("viewBox", "0 -5 10 10")
.attr("refX", 10)
.attr("refY", 0)
.attr("markerWidth", 10)
.attr("markerHeight", 10)
.attr("orient", "auto")
.append("svg:path")
.attr("d", "M0,-5L10,0L0,5");
function restart() {
node = node.data(nodes);
node.enter().insert("circle")
.attr("class", "node")
.attr("id",function(d){return d.name;})
.attr("r", 15);
//Insert text to node..
text=svg.selectAll(".nodetext")
.data(nodes)
.enter()
.append("text")
.attr("class","nodetext")
.text(function(d){return d.name;})
.attr("dx", 13)
.attr("dy", ".35em");
d3.selectAll(".node").on("mousedown",function(d){
if(sourceNode==null){
mouseIsDown = true;
lineData[0] = [d3.mouse(this)[0], d3.mouse(this)[1]];
redrawLine();
sourceNode=d.index;
console.log("Source node: "+d.name);
}
})
.on("mouseup",function(d){
if(targetNode==null && sourceNode!=null && mouseIsDown){
targetNode=d.index;
links.push({source: sourceNode, target: targetNode});
lineData[1] = [d3.mouse(this)[0], d3.mouse(this)[1]];
redrawLine();
console.log("Target node: "+d.name);
sourceNode=null;
targetNode=null;
mouseIsDown = false;
svg.selectAll('path.my-lines')
.data(lineData)
.remove();
restart();
}
});
link = link.data(links);
link.enter().insert("line")
.attr("class", "link");
link.attr("marker-end", "url(#arrow)");
force.start();
}
</script>
</ui:define>
</ui:composition>

The canonical solution is to put the text and circles into a group. Instead of force.tick() moving both the text and nodes individually, you simply transform the group.
So this:
node.attr("cx", function (d) {
return d.x;
})
.attr("cy", function (d) {
return d.y;
});
text.attr("x", function (d) {
return d.x;
})
.attr("y", function (d) {
return d.y;
});
Becomes this:
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
Check out the example here:
http://bl.ocks.org/mbostock/950642

Node drag not working on iPad

I would like to drag node and drag canvas (svg element)
On a desktop browser, it works fine, but on an iPad it only drags the canvas; node dragging is not working. Where did I go wrong?
My source code:
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
}
</style>
<body>
<script src="d3.js"></script>
<script>
var view_w = width = 960,
view_h = height = 500,
view_y = 0,
view_x = 0;
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.attr("viewBox", view_x+" "+view_y+" "+view_w+" "+view_h);
var canvasdrag = d3.behavior.drag().on("drag", function(d){
view_x -= d3.event.dx;
view_y -= d3.event.dy;
//change svg position
svg.attr("translate", view_x + " " + view_y);
//change viewBox start position
svg.attr("viewBox", view_x+" "+view_y+" "+view_w+" "+view_h);
});
svg.call(canvasdrag);
d3.json("./sample.json", function(error, graph) {
graph.links.forEach(function(d) {
d.source = graph.nodes[d.source];
d.target = graph.nodes[d.target];
});
var link = svg.append("g")
.attr("class", "link")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.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 = svg.append("g")
.attr("class", "node")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 6)
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; })
.call(d3.behavior.drag()
.origin(function(d) { return d; })
.on("drag", function(d) {
d.x = d3.event.x, d.y = d3.event.y;
d3.select(this).attr("cx", d.x).attr("cy", d.y);
link.filter(function(l) { return l.source === d; }).attr("x1", d.x).attr("y1", d.y);
link.filter(function(l) { return l.target === d; }).attr("x2", d.x).attr("y2", d.y);
}));
});
</script>
[sample.json]
{"nodes":[{"x":444,"y":275},{"x":378,"y":324},{"x":478,"y":278},{"x":471,"y":256},{"x":382,"y":269},{"x":371,"y":247},{"x":359,"y":276},{"x":364,"y":302},{"x":400,"y":330},{"x":388,"y":298},{"x":524,"y":296},{"x":570,"y":243},{"x":552,"y":159},{"x":502,"y":287},{"x":511,"y":313},{"x":513,"y":265},{"x":602,"y":132},{"x":610,"y":90},{"x":592,"y":91},{"x":575,"y":89},{"x":607,"y":73},{"x":591,"y":68},{"x":574,"y":73},{"x":589,"y":149},{"x":620,"y":205},{"x":621,"y":230},{"x":589,"y":234},{"x":602,"y":223},{"x":548,"y":188},{"x":532,"y":196},{"x":548,"y":114},{"x":575,"y":174},{"x":497,"y":250},{"x":576,"y":196},{"x":504,"y":201},{"x":494,"y":186},{"x":482,"y":199},{"x":505,"y":219},{"x":486,"y":216},{"x":590,"y":306},{"x":677,"y":169},{"x":657,"y":258},{"x":667,"y":205},{"x":552,"y":227},{"x":518,"y":173},{"x":473,"y":125},{"x":796,"y":260},{"x":731,"y":272},{"x":642,"y":288},{"x":576,"y":269},{"x":605,"y":187},{"x":559,"y":289},{"x":544,"y":356},{"x":505,"y":365},{"x":579,"y":289},{"x":619,"y":282},{"x":574,"y":329},{"x":664,"y":306},{"x":627,"y":304},{"x":643,"y":327},{"x":664,"y":348},{"x":665,"y":327},{"x":653,"y":317},{"x":650,"y":338},{"x":622,"y":321},{"x":633,"y":338},{"x":647,"y":357},{"x":718,"y":362},{"x":636,"y":240},{"x":640,"y":227},{"x":617,"y":249},{"x":631,"y":254},{"x":566,"y":213},{"x":713,"y":322},{"x":716,"y":298},{"x":666,"y":241},{"x":627,"y":355}],"links":[{"source":1,"target":0},{"source":2,"target":0},{"source":3,"target":0},{"source":3,"target":2},{"source":4,"target":0},{"source":5,"target":0},{"source":6,"target":0},{"source":7,"target":0},{"source":8,"target":0},{"source":9,"target":0},{"source":11,"target":10},{"source":11,"target":3},{"source":11,"target":2},{"source":11,"target":0},{"source":12,"target":11},{"source":13,"target":11},{"source":14,"target":11},{"source":15,"target":11},{"source":17,"target":16},{"source":18,"target":16},{"source":18,"target":17},{"source":19,"target":16},{"source":19,"target":17},{"source":19,"target":18},{"source":20,"target":16},{"source":20,"target":17},{"source":20,"target":18},{"source":20,"target":19},{"source":21,"target":16},{"source":21,"target":17},{"source":21,"target":18},{"source":21,"target":19},{"source":21,"target":20},{"source":22,"target":16},{"source":22,"target":17},{"source":22,"target":18},{"source":22,"target":19},{"source":22,"target":20},{"source":22,"target":21},{"source":23,"target":16},{"source":23,"target":17},{"source":23,"target":18},{"source":23,"target":19},{"source":23,"target":20},{"source":23,"target":21},{"source":23,"target":22},{"source":23,"target":12},{"source":23,"target":11},{"source":24,"target":23},{"source":24,"target":11},{"source":25,"target":24},{"source":25,"target":23},{"source":25,"target":11},{"source":26,"target":24},{"source":26,"target":11},{"source":26,"target":16},{"source":26,"target":25},{"source":27,"target":11},{"source":27,"target":23},{"source":27,"target":25},{"source":27,"target":24},{"source":27,"target":26},{"source":28,"target":11},{"source":28,"target":27},{"source":29,"target":23},{"source":29,"target":27},{"source":29,"target":11},{"source":30,"target":23},{"source":31,"target":30},{"source":31,"target":11},{"source":31,"target":23},{"source":31,"target":27},{"source":32,"target":11},{"source":33,"target":11},{"source":33,"target":27},{"source":34,"target":11},{"source":34,"target":29},{"source":35,"target":11},{"source":35,"target":34},{"source":35,"target":29},{"source":36,"target":34},{"source":36,"target":35},{"source":36,"target":11},{"source":36,"target":29},{"source":37,"target":34},{"source":37,"target":35},{"source":37,"target":36},{"source":37,"target":11},{"source":37,"target":29},{"source":38,"target":34},{"source":38,"target":35},{"source":38,"target":36},{"source":38,"target":37},{"source":38,"target":11},{"source":38,"target":29},{"source":39,"target":25},{"source":40,"target":25},{"source":41,"target":24},{"source":41,"target":25},{"source":42,"target":41},{"source":42,"target":25},{"source":42,"target":24},{"source":43,"target":11},{"source":43,"target":26},{"source":43,"target":27},{"source":44,"target":28},{"source":44,"target":11},{"source":45,"target":28},{"source":47,"target":46},{"source":48,"target":47},{"source":48,"target":25},{"source":48,"target":27},{"source":48,"target":11},{"source":49,"target":26},{"source":49,"target":11},{"source":50,"target":49},{"source":50,"target":24},{"source":51,"target":49},{"source":51,"target":26},{"source":51,"target":11},{"source":52,"target":51},{"source":52,"target":39},{"source":53,"target":51},{"source":54,"target":51},{"source":54,"target":49},{"source":54,"target":26},{"source":55,"target":51},{"source":55,"target":49},{"source":55,"target":39},{"source":55,"target":54},{"source":55,"target":26},{"source":55,"target":11},{"source":55,"target":16},{"source":55,"target":25},{"source":55,"target":41},{"source":55,"target":48},{"source":56,"target":49},{"source":56,"target":55},{"source":57,"target":55},{"source"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I’m using d3.js version 788855b4a4141fab9554513976dcc50004c76489.