How can I display the source nodes names of a clicked target node in a forced directed graph using D3?
The snippet below is from some example code for directed graphs by Mike Bostock. How can I go about modifying this base code so when a node is clicked on the graph, the target values of that node is displayed on the screen (in this case I would like to display the name attributes)?
For example the 0-th element in "nodes" is:
"nodes":[
{"name":"Myriel","group":1},
...
]
And in "links" the targets are define like so:
"links":[
{"source":1,"target":0,"value":1}, // Napoleon
{"source":2,"target":0,"value":8}, // Mlle.Baptistine
{"source":3,"target":0,"value":10}, // Mme.Magloire
{"source":3,"target":2,"value":6},
{"source":4,"target":0,"value":1}, // CountessdeLo
{"source":5,"target":0,"value":1}, // Geborand
{"source":6,"target":0,"value":1}, // Champtercier
{"source":7,"target":0,"value":1}, // Cravatte
{"source":8,"target":0,"value":2}, // Count
{"source":9,"target":0,"value":1}, // OldMan
...
{"source":11,"target":0,"value":5}, // Valjean
...
]
Then clicking on the node Myriel would display:
Napoleon,Mlle.Baptistine,Mme.Magloire,CountessdeLo,Geborand,Champtercier,Cravatte,Count,OldMan,Valjean
Myriel is located here in the graph:
Below is the JavaScript code:
var width = 960,
height = 500;
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
d3.json("https://gist.githubusercontent.com/mbostock/4062045/raw/9653f99dbf6050b0f28ceafbba659ac5e1e66fbd/miserables.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.group); })
.call(force.drag)
.on("click",function(d){
var targets = graph.links.filter(function(i){
return i.target.name == d.name
});
tip.show( targets.map(function(i){ return i.source.name;}) );
});
node.append("title")
.text(function(d) { return d.name; });
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; });
});
});
var width = 960,
height = 500;
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
d3.json("https://gist.githubusercontent.com/mbostock/4062045/raw/9653f99dbf6050b0f28ceafbba659ac5e1e66fbd/miserables.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.group); })
.call(force.drag)
.on("click",function(d){
var targets = graph.links.filter(function(i){
return i.target.name == d.name
});
tip.show( targets.map(function(i){ return i.source.name;}) );
});
node.append("title")
.text(function(d) { return d.name; });
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; });
});
});
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.0/d3.min.js"></script>
Add a click event on each node, then inside we can get all the targets by filtering the graph.links array such that we only have the elements who's target.name is the same as the clicked nodes name d.name. Once we have that you can use .map() to return the array with .source.name to give the name of those items inside targets:
.on("click",function(d) {
var targets = graph.links.filter(function(i){
return i.target.name==d.name;
});
tip.show( targets.map(function(i){ return i.source.name; }) );
});
var tip = d3.tip().attr('class', 'd3-tip').html(function(d) { return d; });
var width = 960,
height = 500;
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
svg.call(tip);
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
d3.json("https://gist.githubusercontent.com/mbostock/4062045/raw/9653f99dbf6050b0f28ceafbba659ac5e1e66fbd/miserables.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.group); })
.call(force.drag)
.on("click",function(d){
var targets = graph.links.filter(function(i){
return i.target.name == d.name
});
tip.show( targets.map(function(i){ return i.source.name;}) );
});
node.append("title")
.text(function(d) { return d.name; });
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; });
});
});
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.0/d3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3-tip/0.6.7/d3-tip.min.js"></script>
Now for easy display of those values the d3-tip library can be used. This would be initialized for the graph like so:
var tip = d3.tip().attr('class', 'd3-tip').html(function(d) { return d; });
...
var svg = ..
svg.call(tip);
And finally the tip.show(...) function in the first code snippet will display those items on the graph.
Related
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<style>
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
</style>
<body>
</body>
<script src="d3.v3.min.js"></script>
<script>
var width = 960,
height = 500;
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) {
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", function(d) {return d.r;})
.style("fill", function(d) { return color(d.group); })
node.append("title")
.text(function(d) { return d.name; });
node.append("text")
.text("A");
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>
</html>
The code above is using D3js to draw a Force-directed graph drawing from some data, and I just want to place some text on the circle so I use node.append("text") you can see it above.
But however when add it it does not work, there is still not text on the circle so I wonder how could it be????
SVG does not allow a text element inside an circle element. You should put the circle and the text element inside a common g. Try something like this (not tested):
var node = svg.selectAll(".node")
.data(graph.nodes).enter().append('g').classed('node', true);
node.append("circle")
.attr("r", function(d) {return d.r;})
.style("fill", function(d) { return color(d.group); })
.append("title")
.text(function(d) { return d.name; });
node.append("text")
.text("A");
And then instead of setting cx and cy on nodes, set the transform property on the g.node:
force.on("tick", function() {
// ...
node.attr("transform", function(d) { return 'translate(' + [d.x, d.y] + ')'; })
});
I found this d3 code, and I am unable to put text to the nodes. I have seen some solutions to create a parent class for this but I am getting errors trying them out. The current code works but doesn't add text :(
Here's the plnkr link for the working code -
http://plnkr.co/edit/dqAaEhJnnK4i2nBsTaNu?p=preview
Also, this is the code
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
</style>
<body>
<button id="clusterButton" type="button">Cluster</button>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script type="text/javascript" src="../netClustering.js"> </script>
<!-- <script type="text/javascript" src="groupInABox.js"> </script> -->
<script>
var width = 960,
height = 500;
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
// var gb = GroupInABox(force, "");
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("miserables.json", function(error, 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 node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("circle")
.attr("class", "node")
.attr("r", 5)
.call(force.drag);
// node.append("title")
// .text(function(d) { return d.name; });
node.append("text")
.attr("dx", 12)
.attr("dy", "0.35em")
.text(function(d){ return d.name; });
// .call(force.drag);
// .attr("font-size", function(d){ return d.influence*1.5>9? d.influence*1.5: 9; })
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; });
});
d3.select("#clusterButton").on("click", function () {
netClustering.cluster(graph.nodes, graph.links);
svg.selectAll(".node").transition().duration(500).style("fill", function(d) { return color(d.cluster); });
});
});
</script>
You are appending a text to circle as child node. That will not render. A circle can't have a text. There are 2 ways, either define a new enter selection with the same data and append texts ,or create a g element append circle and text and on tick,vupdate transform attribute each tick. I did the first one, change the below part of your script and it will render:
// node.append("title")
// .text(function(d) { return d.name; });
var texts =svg.selectAll(".texts")
.data(graph.nodes)
.enter()
.append("text")
.attr("dx", 12)
.attr("dy", "0.35em")
.text(function(d){ return d.name; });
// .call(force.drag);
// .attr("font-size", function(d){ return d.influence*1.5>9? d.influence*1.5: 9; })
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; });
texts.attr("x", function(d) { return d.x; })
.attr("y", function(d) { return d.y; });
});
You entire html:
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
</style>
<body>
<button id="clusterButton" type="button">Cluster</button>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script type="text/javascript" src="netClustering.js"> </script>
<!-- <script type="text/javascript" src="groupInABox.js"> </script> -->
<script>
var width = 960,
height = 500;
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
// var gb = GroupInABox(force, "");
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("miserables.json", function(error, 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 node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("circle")
.attr("class", "node")
.attr("r", 5)
.call(force.drag);
var texts =svg.selectAll(".texts")
.data(graph.nodes)
.enter()
.append("text")
.attr("dx", 12)
.attr("dy", "0.35em")
.text(function(d){ return d.name; });
// .call(force.drag);
// .attr("font-size", function(d){ return d.influence*1.5>9? d.influence*1.5: 9; })
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; });
texts.attr("x", function(d) { return d.x; })
.attr("y", function(d) { return d.y; });
});
d3.select("#clusterButton").on("click", function () {
netClustering.cluster(graph.nodes, graph.links);
svg.selectAll(".node").transition().duration(500).style("fill", function(d) { return color(d.cluster); });
});
});
</script>
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/
I am a newbie in D3JS and I was trying to do a similar example to this one : http://bl.ocks.org/mbostock/4062045
I have generated this JSON file output.json and I try to get it running but nothing shows up!
{"nodes":[{"name":"Hiroyasu Nakata","group":1},{"name":"Kazuo Satoh","group":1},{"name":"Tyuzi Ohyama","group":1},{"name":"Yasufumi Fujiwara","group":1},{"name":"Youichi Nonogaki","group":1},{"name":"Yoshikazu Takeda","group":1},{"name":"N. Tamari","group":2},{"name":"S. H. Wemple","group":3},{"name":"Kun-Jing Lee","group":4},{"name":"Z. C. Huang","group":4},{"name":"J. C. Chen","group":4},{"name":"L. Cai","group":5},{"name":"S. Han","group":5},{"name":"G. May","group":5},{"name":"S. Kamra","group":5},{"name":"T. Krygowski","group":5},{"name":"A. Rohatgi","group":5},{"name":"Stephen Miller","group":7},{"name":"Paul H. Holloway","group":7}],"links":[{"source":1,"target":2},{"source":1,"target":3},{"source":1,"target":4},{"source":1,"target":5},{"source":1,"target":6},{"source":2,"target":3},{"source":2,"target":4},{"source":2,"target":5},{"source":2,"target":6},{"source":3,"target":4},{"source":3,"target":5},{"source":3,"target":6},{"source":4,"target":5},{"source":4,"target":6},{"source":5,"target":6},{"source":9,"target":10},{"source":9,"target":11},{"source":10,"target":11},{"source":12,"target":13},{"source":12,"target":14},{"source":12,"target":15},{"source":12,"target":16},{"source":12,"target":17},{"source":13,"target":14},{"source":13,"target":15},{"source":13,"target":16},{"source":13,"target":17},{"source":14,"target":15},{"source":14,"target":16},{"source":14,"target":17},{"source":15,"target":16},{"source":15,"target":17},{"source":16,"target":17},{"source":18,"target":19}]}
This is the HTML file :
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #999;
stroke-opacity: .6;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var width = 960,
height = 500;
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("output.json", function(error, 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 node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("circle")
.attr("class", "node")
.attr("r", 5)
.style("fill", function(d) { return color(d.group); })
.call(force.drag);
node.append("title")
.text(function(d) { return d.name; });
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>
What did I do wrong? And how can I fix it?
Thanks!
How to increase linkDistance without affecting the node alignment,
example: http://mbostock.github.com/d3/talk/20110921/force.html
when I try to increase the circle radius and linkDistance
the it collapse
<script type="text/javascript">
var w = 1280,
h = 800,
z = d3.scale.category20c();
var force = d3.layout.force()
.size([w, h]);
var svg = d3.select("#chart").append("svg:svg")
.attr("width", w)
.attr("height", h);
svg.append("svg:rect")
.attr("width", w)
.attr("height", h);
d3.json("flare.json", function(root) {
var nodes = flatten(root),
links = d3.layout.tree().links(nodes);
force
.nodes(nodes)
.links(links)
.start();
var link = svg.selectAll("line")
.data(links)
.enter().insert("svg:line")
.style("stroke", "#999")
.style("stroke-width", "1px");
var node = svg.selectAll("circle.node")
.data(nodes)
.enter().append("svg:circle")
.attr("r", 4.5)
.style("fill", function(d) { return z(d.parent && d.parent.name); })
.style("stroke", "#000")
.call(force.drag);
force.on("tick", function(e) {
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 flatten(root) {
var nodes = [];
function recurse(node, depth) {
if (node.children) {
node.children.forEach(function(child) {
child.parent = node;
recurse(child, depth + 1);
});
}
node.depth = depth;
nodes.push(node);
}
recurse(root, 1);
return nodes;
}
</script>
Play around with the .charge parameter. It defines how much the nodes repel each other.