I am trying to get the below code working with adding labels, still no luck, seems that my labels are written on top of the page instead of on the node itself. I think it is a binding issue with SVG.
I tried to add the title but I didn't manage to display it.
<!-- INITAL SETTINGS ------------------------------------------------------------------------------->
<!-------------------------------------------------------------------------------------------------->
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.links line {
stroke: #999;
stroke-opacity: 0.5;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.2px;
}
</style>
<!-- the SVG viewport will be 1100px by 900px -->
<svg width="1100" height="900" viewbox="0 0 1100 900">
<text> </text>
<!-- SVG content drawn onto the SVG canvas -->
</svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
// DATA DEFINITIONS NODES & LINKS ------------------------------------------------------------------
// -------------------------------------------------------------------------------------------------
var graph = {
"nodes": [
{ "id": "xxx1", "group": 3 },
{ "id": "xxx2", "group": 1 },
{ "id": "xxx3", "group": 1 }
],
"links": [
{ "source": "xxx1", "target": "xxx2", "value": 42 },
{ "source": "xxx2", "target": "xxx3", "value": 6 },
{ "source": "xxx1", "target": "xxx3", "value": 13 }
]
};
// ---------------------------------------------------------------------------------------------------------
// ---------------------------------------------------------------------------------------------------------
// D3 CODE
// ---------------------------------------------------------------------------------------------------------
// ---------------------------------------------------------------------------------------------------------
// create the construct/canvas for drawing
var svg = d3.select("svg")
//set width/height
width = +svg.attr("width"),
height = +svg.attr("height")
preserveAspectRatio = "xMinYMin meet"
//color definition
var color = d3.scaleOrdinal(d3.schemeCategory20);
//Creates a new simulation with the specified array of nodes
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function (d) { return d.id; }))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width/2.3, height/2.3))
// adding links
//The g element is a container element for grouping related graphics together
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function (d) { return Math.sqrt(d.value); });
//adding nodes
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 6)
.attr("fill", function (d) { return color(d.group); })
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
//var text = svg.append("g")
// .attr("class", "text")
// .selectAll("circle")
// .data(graph.nodes)
// .enter().append("id")
// .attr("cx", "12")
// .attr("cy", ".35em")
// .attr("text-anchor", "middle")
// .text(function(d) { return d.id });
// adding title
node.append("title")
.text(function (d) { return (d.id); });
var text = svg.append("g")
.attr("class", "labels")
.selectAll("text")
.data(graph.nodes)
.enter().append("text")
.attr("dx", 12)
.attr("dy", ".35em")
.text(function(d) { return d.id });
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
// ticked functionality
function ticked() {
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; })
.call(force.drag);
}
//The data and the circle element’s position are updated during the drag event
// when dragged
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
// when dragged completed
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
// when dragged ended
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
You have to move the texts as well in the tick function:
text.attr("x", function(d) {
return d.x;
})
.attr("y", function(d) {
return d.y;
});
Here is your code with that change:
var graph = {
"nodes": [{
"id": "xxx1",
"group": 3
}, {
"id": "xxx2",
"group": 1
}, {
"id": "xxx3",
"group": 1
}
],
"links": [{
"source": "xxx1",
"target": "xxx2",
"value": 42
}, {
"source": "xxx2",
"target": "xxx3",
"value": 6
}, {
"source": "xxx1",
"target": "xxx3",
"value": 13
}]
};
// create the construct/canvas for drawing
var svg = d3.select("svg")
//set width/height
width = +svg.attr("width"),
height = +svg.attr("height")
preserveAspectRatio = "xMinYMin meet"
//color definition
var color = d3.scaleOrdinal(d3.schemeCategory20);
//Creates a new simulation with the specified array of nodes
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) {
return d.id;
}))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2.3, height / 2.3))
// adding links
//The g element is a container element for grouping related graphics together
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) {
return Math.sqrt(d.value);
});
//adding nodes
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 6)
.attr("fill", function(d) {
return color(d.group);
})
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
// adding title
node.append("title")
.text(function(d) {
return (d.id);
});
var text = svg.append("g")
.attr("class", "labels")
.selectAll("text")
.data(graph.nodes)
.enter().append("text")
.attr("dx", 12)
.attr("dy", ".35em")
.text(function(d) {
return d.id
});
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
// ticked functionality
function ticked() {
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;
});
}
//The data and the circle element’s position are updated during the drag event
// when dragged
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
// when dragged completed
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
// when dragged ended
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
.links line {
stroke: #999;
stroke-opacity: 0.5;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.2px;
}
<script src="https://d3js.org/d3.v4.min.js"></script>
<svg width="500" height="400" viewbox="0 0 500 400">
<text> </text>
</svg>
Related
I am in need to implement a various link distance. I added a function call during the initialization of the force / simulation. Still, it looks like the settings are ignored. I want to add another node very close, that barely a hair would fit between. Is this even possible?
I noticed a similar question on stackoverflow but this requires another plugin, furthermore this question was created 4 years ago. Maybe vanilla d3.js already added the feature.
var graph = {
"nodes": [
{
"id": 0
},
{
"id": 1
},
{
"id": 2
},
{
"id": 3
}
],
"links": [
{
"source": 0,
"target": 1,
"distance": 0.1
},
{
"source": 0,
"target": 2,
"distance": 150
},
{
"source": 0,
"target": 3,
"distance": 20
}
]
}
var svg = d3.select("svg")
.attr("class", "canvas")
.attr("width", window.innerWidth)
.attr("height", window.innerHeight)
.call(d3.zoom().on("zoom", function (event) {
svg.attr("transform", event.transform)
}))
.append("g")
var linksContainer = svg.append("g").attr("class", linksContainer)
var nodesContainer = svg.append("g").attr("class", nodesContainer)
var sourceNode;
var force = d3.forceSimulation()
//.force("link", d3.forceLink().id(function (d) { return d.id }).distance(80))
.force("link", d3.forceLink().distance(linkDistance).strength(0.1))
.force("charge", d3.forceManyBody().strength(-100))
.force("center", d3.forceCenter(window.innerWidth / 2, window.innerHeight / 2))
.force("collision", d3.forceCollide().radius(90))
function linkDistance(d) {
console.log(d.distance)
return d.distance;
}
initialize()
function initialize() {
link = linksContainer.selectAll(".link")
.data(graph.links)
.join("line")
.attr("class", "link")
.style("stroke", "black")
.style("stroke-width", 1)
node = nodesContainer.selectAll(".node")
.data(graph.nodes, d => d.id)
.join("g")
.attr("class", "node")
.call(d3.drag()
.on("start", dragStarted)
.on("drag", dragged)
.on("end", dragEnded)
)
.on("click", addNode)
node.selectAll("circle")
.data(d => [d])
.join("circle")
.attr("r", 30)
.style("fill", "whitesmoke")
node.append("text")
.attr("dominant-baseline", "central")
.attr("text-anchor", "middle")
.attr("font-size", 15)
.attr("pointer-events", "none")
.text(function (d) {
return d.id
})
force
.nodes(graph.nodes)
.on("tick", ticked);
force
.force("link")
.links(graph.links)
}
function ticked() {
// update link positions
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;
});
// update node positions
node
.attr("transform", function (d) {
return "translate(" + d.x + ", " + d.y + ")";
});
}
function dragStarted(event, d) {
if (!event.active) force.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
PosX = d.x
PosY = d.y
}
function dragged(event, d) {
d.fx = event.x;
d.fy = event.y;
}
function dragEnded(event, d) {
if (!event.active) force.alphaTarget(0);
d.fx = undefined;
d.fy = undefined;
}
function addNode(event, d) {
const nodeId = graph.nodes.length
graph.nodes.push({id: nodeId})
graph.links.push({source: d, target: nodeId, distance: 1})
initialize()
}
body {
height: 100%;
background: #e6e7ee;
overflow: hidden;
margin: 0px;
}
.faded {][1]
opacity: 0.1;
transition: 0.3s opacity;
}
.highlight {
opacity: 1;
}
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- d3.js framework -->
<script src="https://d3js.org/d3.v6.js"></script>
<!-- fontawesome stylesheet https://fontawesome.com/ -->
<script src="https://kit.fontawesome.com/39094309d6.js" crossorigin="anonymous"></script>
</head>
<style>
</style>
<body>
<svg id="svg"></svg>
</body>
The distance function is correctly set and specified.
Problem comes from the forceCollide, which is set to a radius of 90, and pushes the nodes apart regardless of specified distance.
Decreasing the radius of forceCollide fixes the problem, as illustrated below :)
var graph = {
"nodes": [
{
"id": 0
},
{
"id": 1
},
{
"id": 2
},
{
"id": 3
}
],
"links": [
{
"source": 0,
"target": 1,
"distance": 0.1
},
{
"source": 0,
"target": 2,
"distance": 150
},
{
"source": 0,
"target": 3,
"distance": 20
}
]
}
var svg = d3.select("svg")
.attr("class", "canvas")
.attr("width", window.innerWidth)
.attr("height", window.innerHeight)
.call(d3.zoom().on("zoom", function (event) {
svg.attr("transform", event.transform)
}))
.append("g")
var linksContainer = svg.append("g").attr("class", linksContainer)
var nodesContainer = svg.append("g").attr("class", nodesContainer)
var sourceNode;
var force = d3.forceSimulation()
//.force("link", d3.forceLink().id(function (d) { return d.id }).distance(80))
.force("link", d3.forceLink().distance(linkDistance).strength(.1))
.force("charge", d3.forceManyBody().strength(-100))
.force("center", d3.forceCenter(window.innerWidth / 2, window.innerHeight / 2))
.force("collision", d3.forceCollide().radius(9))
function linkDistance(d) {
console.log('distance: ', d.distance)
return d.distance;
}
initialize()
function initialize() {
link = linksContainer.selectAll(".link")
.data(graph.links)
.join("line")
.attr("class", "link")
.style("stroke", "black")
.style("stroke-width", 1)
node = nodesContainer.selectAll(".node")
.data(graph.nodes, d => d.id)
.join("g")
.attr("class", "node")
.call(d3.drag()
.on("start", dragStarted)
.on("drag", dragged)
.on("end", dragEnded)
)
.on("click", addNode)
node.selectAll("circle")
.data(d => [d])
.join("circle")
.attr("r", 30)
.style("fill", "whitesmoke")
node.append("text")
.attr("dominant-baseline", "central")
.attr("text-anchor", "middle")
.attr("font-size", 15)
.attr("pointer-events", "none")
.text(function (d) {
return d.id
})
force
.nodes(graph.nodes)
.on("tick", ticked);
force
.force("link")
.links(graph.links)
}
function ticked() {
// update link positions
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;
});
// update node positions
node
.attr("transform", function (d) {
return "translate(" + d.x + ", " + d.y + ")";
});
}
function dragStarted(event, d) {
if (!event.active) force.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
PosX = d.x
PosY = d.y
}
function dragged(event, d) {
d.fx = event.x;
d.fy = event.y;
}
function dragEnded(event, d) {
if (!event.active) force.alphaTarget(0);
d.fx = undefined;
d.fy = undefined;
}
function addNode(event, d) {
const nodeId = graph.nodes.length
graph.nodes.push({id: nodeId})
graph.links.push({source: d, target: nodeId, distance: 1})
initialize()
}
body {
height: 100%;
background: #e6e7ee;
overflow: hidden;
margin: 0px;
}
.faded {][1]
opacity: 0.1;
transition: 0.3s opacity;
}
.highlight {
opacity: 1;
}
<!-- d3.js framework -->
<script src="https://d3js.org/d3.v6.js"></script>
<!-- fontawesome stylesheet https://fontawesome.com/ -->
<script src="https://kit.fontawesome.com/39094309d6.js" crossorigin="anonymous"></script>
<svg id="svg"></svg>
I have created a horizontal tree diagram as shown in below image. I want straight lines between nodes. The curved lines between nodes are default in d3 js. I saw some answers on google for this but did not found any satisfactory result. So is it possible to draw straight lines between nodes in d3 js? If yes then how can I do that?
enter image description here
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
<script src="https://d3js.org/d3.v3.min.js"></script>
<style>
.node circle {
fill: #ff9900;
stroke: #ff9900;
stroke-width: 1px;
}
.node text {
font: 16px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
</head>
<body>
<script language="javascript">
var treeData = [{
"name": "1",
"parent": "null",
"children": [{
"name": "2",
"parent": "Persons",
"children": [{
"name": "3",
"parent": "Country of residence"
}, {
"name": "4",
"parent": "Country of residence"
}, {
"name": "5",
"parent": "Country of residence"
}, {
"name": "6",
"parent": "Country of residence"
}]
}]
}];
// ************** Generate the tree diagram *****************
var margin = {
top: 20,
right: 120,
bottom: 20,
left: 120
},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0;
var tree = d3.layout.tree().size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) {
return [d.y, d.x];
});
var line = d3.svg.line()
.x(function(d) {
return d.lx;
})
.y(function(d) {
return d.ly;
});
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
update(root);
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) {
d.y = d.depth * 180;
});
// Declare the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) {
return d.id || (d.id = ++i);
});
// Enter the nodes.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
nodeEnter.append("circle")
.attr("r", 40)
.style("fill", "#ff9900");
// append icon inside circle
nodeEnter.append("image")
.attr("xlink:href", "http://localhost/d3/user2.jpg")
.attr("x", "-18px")
.attr("y", "-18px")
.attr("width", "35px")
.attr("height", "35px");
nodeEnter.append("text")
.attr("x", function(d) {
return d.children || d._children ? -40 : -50;
})
.attr("y", function(d) {
return d.children || d._children ? 55 : 55;
})
.attr("dy", ".35em")
.attr("text-anchor", function(d) {
return d.children || d._children ? "start" : "start";
})
.text(function(d) {
return d.name;
})
.style("fill-opacity", 1);
// Declare the links…
var link = svg.selectAll("path.link")
.data(links, function(d) {
return d.target.id;
});
// Enter the links.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", diagonal);
}
</script>
</body>
</body>
</html>
Define your line :
var line = d3.svg.line()
.x(function(d) {
return d.y; // because tree is horizontal
})
.y(function(d) {
return d.x; // because tree is horizontal
});
Change your links function to this because d3.svg.line() takes array of points as argument
Hope this helps
// Enter the links.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function(d) {
return line([d.source, d.target]);
});
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
<script src="https://d3js.org/d3.v3.min.js"></script>
<style>
.node circle {
fill: #ff9900;
stroke: #ff9900;
stroke-width: 1px;
}
.node text {
font: 16px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
</head>
<body>
<script language="javascript">
var treeData = [{
"name": "1",
"parent": "null",
"children": [{
"name": "2",
"parent": "Persons",
"children": [{
"name": "3",
"parent": "Country of residence"
}, {
"name": "4",
"parent": "Country of residence"
}, {
"name": "5",
"parent": "Country of residence"
}, {
"name": "6",
"parent": "Country of residence"
}]
}]
}];
// ************** Generate the tree diagram *****************
var margin = {
top: 20,
right: 120,
bottom: 20,
left: 120
},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0;
var tree = d3.layout.tree().size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) {
return [d.y, d.x];
});
var line = d3.svg.line()
.x(function(d) {
return d.y;
})
.y(function(d) {
return d.x;
});
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
update(root);
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) {
d.y = d.depth * 180;
});
// Declare the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) {
return d.id || (d.id = ++i);
});
// Enter the nodes.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
nodeEnter.append("circle")
.attr("r", 40)
.style("fill", "#ff9900");
// append icon inside circle
nodeEnter.append("image")
.attr("xlink:href", "http://localhost/d3/user2.jpg")
.attr("x", "-18px")
.attr("y", "-18px")
.attr("width", "35px")
.attr("height", "35px");
nodeEnter.append("text")
.attr("x", function(d) {
return d.children || d._children ? -40 : -50;
})
.attr("y", function(d) {
return d.children || d._children ? 55 : 55;
})
.attr("dy", ".35em")
.attr("text-anchor", function(d) {
return d.children || d._children ? "start" : "start";
})
.text(function(d) {
return d.name;
})
.style("fill-opacity", 1);
// Declare the links…
var link = svg.selectAll("path.link")
.data(links, function(d) {
return d.target.id;
});
// Enter the links.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function(d) { return line([d.source, d.target])});
}
</script>
</body>
</body>
</html>
I have D3js Tree chart,every thing is working fine but as per my requirement I need to expand whole chart onclick 'Expand' button and collapse again onclick 'collapse' button.It should be same like onclick of 'Top Level' is happening in the chart.Here is code below.Thanks in advance for help.
HTML
<style>
.node {
cursor: pointer;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
<script src="http://d3js.org/d3.v3.min.js"></script>
<div id="test"></div>
<div id="expand">Expand</div><br><div id="collapse">Collapse</div>
Javascript
var treeData = [
{
"name": "Top Level",
"parent": "null",
"children": [
{
"name": "Level 2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A",
"parent": "Level 2: A"
},
{
"name": "Daughter of A",
"parent": "Level 2: A"
}
]
},
{
"name": "Level 2: B",
"parent": "Top Level"
}
]
}
];
// ************** Generate the tree diagram *****************
var margin = {top: 20, right: 120, bottom: 20, left: 120},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) { return [d.y, d.x]; });
var svg = d3.select("#test").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
root.x0 = height / 2;
root.y0 = 0;
update(root);
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) { d.y = d.depth * 180; });
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter any new nodes at the parent's previous position.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
.on("click", click);
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
nodeEnter.append("text")
.attr("x", function(d) { return d.children || d._children ? -13 : 13; })
.attr("dy", ".35em")
.attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; })
.text(function(d) { return d.name; })
.style("fill-opacity", 1e-6);
// Transition nodes to their new position.
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
nodeUpdate.select("circle")
.attr("r", 10)
.style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function(d) { return d.target.id; });
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function(d) {
var o = {x: source.x0, y: source.y0};
return diagonal({source: o, target: o});
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit().transition()
.duration(duration)
.attr("d", function(d) {
var o = {x: source.x, y: source.y};
return diagonal({source: o, target: o});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
Here's an approach to do that:
Add click events using the same logic as in click function by passing the top level data.
// binding events to buttons
d3.select('#expand').on('click', function() {
var topLevelData = treeData.find(function(d) { return d.name === 'Top Level'; });
if(!topLevelData.children) {
click(topLevelData);
}
});
d3.select('#collapse').on('click', function() {
var topLevelData = treeData.find(function(d) { return d.name === 'Top Level'; });
if(topLevelData.children) {
click(topLevelData);
}
});
var treeData = [
{
"name": "Top Level",
"parent": "null",
"children": [
{
"name": "Level 2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A",
"parent": "Level 2: A"
},
{
"name": "Daughter of A",
"parent": "Level 2: A"
}
]
},
{
"name": "Level 2: B",
"parent": "Top Level"
}
]
}
];
// ************** Generate the tree diagram *****************
var margin = {top: 20, right: 120, bottom: 20, left: 120},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) { return [d.y, d.x]; });
var svg = d3.select("#test").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
root.x0 = height / 2;
root.y0 = 0;
update(root);
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) { d.y = d.depth * 180; });
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter any new nodes at the parent's previous position.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
.on("click", click);
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
nodeEnter.append("text")
.attr("x", function(d) { return d.children || d._children ? -13 : 13; })
.attr("dy", ".35em")
.attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; })
.text(function(d) { return d.name; })
.style("fill-opacity", 1e-6);
// Transition nodes to their new position.
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
nodeUpdate.select("circle")
.attr("r", 10)
.style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function(d) { return d.target.id; });
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function(d) {
var o = {x: source.x0, y: source.y0};
return diagonal({source: o, target: o});
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit().transition()
.duration(duration)
.attr("d", function(d) {
var o = {x: source.x, y: source.y};
return diagonal({source: o, target: o});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
// binding events to buttons
d3.select('#expand').on('click', function() {
var topLevelData = treeData.find(function(d) { return d.name === 'Top Level'; });
if(!topLevelData.children) {
click(topLevelData);
}
});
d3.select('#collapse').on('click', function() {
var topLevelData = treeData.find(function(d) { return d.name === 'Top Level'; });
if(topLevelData.children) {
click(topLevelData);
}
});
<style>
.node {
cursor: pointer;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
<script src="https://d3js.org/d3.v3.min.js"></script>
<div id="test"></div>
<div id="expand">Expand</div><br><div id="collapse">Collapse</div>
Hope this helps.
How can I modify the following example so that all sticky nodes are released when a button is pressed? I've seen this implemented for nodes to be released (unstuck) with a doubleclick (here), but I want to release them all at the same time (my plan is to include this in a restart() function for the graph).
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.links line {
stroke: #999;
stroke-opacity: 0.6;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.5px;
}
</style>
<svg width="960" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
//create somewhere to put the force directed graph
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var nodes_data = [{
"name": "Travis",
"sex": "M"
},
{
"name": "Rake",
"sex": "M"
},
{
"name": "Diana",
"sex": "F"
},
{
"name": "Rachel",
"sex": "F"
},
{
"name": "Shawn",
"sex": "M"
},
{
"name": "Emerald",
"sex": "F"
}
]
var links_data = [{
"source": "Travis",
"target": "Rake"
},
{
"source": "Diana",
"target": "Rake"
},
{
"source": "Diana",
"target": "Rachel"
},
{
"source": "Rachel",
"target": "Rake"
},
{
"source": "Rachel",
"target": "Shawn"
},
{
"source": "Emerald",
"target": "Rachel"
}
]
//set up the simulation
var simulation = d3.forceSimulation()
//add nodes
.nodes(nodes_data);
//add forces
//we're going to add a charge to each node
//also going to add a centering force
//and a link force
var link_force = d3.forceLink(links_data)
.id(function(d) {
return d.name;
});
simulation
.force("charge_force", d3.forceManyBody())
.force("center_force", d3.forceCenter(width / 2, height / 2))
.force("links", link_force);
//add tick instructions:
simulation.on("tick", tickActions);
//draw circles for the links
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(nodes_data)
.enter()
.append("circle")
.attr("r", 10)
.attr("fill", "red");
//draw lines for the links
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(links_data)
.enter().append("line")
.attr("stroke-width", 2);
var drag_handler = d3.drag()
.on("start", drag_start)
.on("drag", drag_drag)
.on("end", drag_end);
//same as using .call on the node variable as in https://bl.ocks.org/mbostock/4062045
drag_handler(node)
//drag handler
//d is the node
function drag_start(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function drag_drag(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function drag_end(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = d.x;
d.fy = d.y;
}
function tickActions() {
//update circle positions each tick of the simulation
node
.attr("cx", function(d) {
return d.x;
})
.attr("cy", function(d) {
return d.y;
});
//update link positions
//simply tells one end of the line to follow one node around
//and the other end of the line to follow the other node around
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;
});
}
</script>
That's not a Bostock's bl.ocks, and there is no double click there to release the nodes.
Anyway, you just need to remove the fx and fy properties, and reheat the simulation again:
d3.select("button").on("click", function() {
node.each(function(d) {
d.fx = d.fy = null;
})
simulation.alphaTarget(0.3).restart();
})
I'm using alphaTarget because that's what you have in your code, but you should consider using alpha instead.
Here is the code with that change:
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.links line {
stroke: #999;
stroke-opacity: 0.6;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.5px;
}
</style>
<button>Release</button>
<svg width="600" height="400"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
//create somewhere to put the force directed graph
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var nodes_data = [{
"name": "Travis",
"sex": "M"
},
{
"name": "Rake",
"sex": "M"
},
{
"name": "Diana",
"sex": "F"
},
{
"name": "Rachel",
"sex": "F"
},
{
"name": "Shawn",
"sex": "M"
},
{
"name": "Emerald",
"sex": "F"
}
]
var links_data = [{
"source": "Travis",
"target": "Rake"
},
{
"source": "Diana",
"target": "Rake"
},
{
"source": "Diana",
"target": "Rachel"
},
{
"source": "Rachel",
"target": "Rake"
},
{
"source": "Rachel",
"target": "Shawn"
},
{
"source": "Emerald",
"target": "Rachel"
}
]
//set up the simulation
var simulation = d3.forceSimulation()
//add nodes
.nodes(nodes_data);
//add forces
//we're going to add a charge to each node
//also going to add a centering force
//and a link force
var link_force = d3.forceLink(links_data)
.id(function(d) {
return d.name;
});
simulation
.force("charge_force", d3.forceManyBody())
.force("center_force", d3.forceCenter(width / 2, height / 2))
.force("links", link_force);
//add tick instructions:
simulation.on("tick", tickActions);
//draw circles for the links
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(nodes_data)
.enter()
.append("circle")
.attr("r", 10)
.attr("fill", "red");
//draw lines for the links
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(links_data)
.enter().append("line")
.attr("stroke-width", 2);
var drag_handler = d3.drag()
.on("start", drag_start)
.on("drag", drag_drag)
.on("end", drag_end);
//same as using .call on the node variable as in https://bl.ocks.org/mbostock/4062045
drag_handler(node)
//drag handler
//d is the node
function drag_start(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function drag_drag(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function drag_end(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = d.x;
d.fy = d.y;
}
function tickActions() {
//update circle positions each tick of the simulation
node
.attr("cx", function(d) {
return d.x;
})
.attr("cy", function(d) {
return d.y;
});
//update link positions
//simply tells one end of the line to follow one node around
//and the other end of the line to follow the other node around
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;
});
}
d3.select("button").on("click", function() {
node.each(function(d) {
d.fx = d.fy = null;
})
simulation.alphaTarget(0.3).restart();
})
</script>
I have a force graph with colored nodes that I am trying to add labels to. Right now it has labels, but it's the small, hard to read ones native to the browser. How would I add labels that are easier to see?
<svg width="960" height="600"></svg>
<script>
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var color = d3.scaleOrdinal(d3.schemeCategory10);
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.id; }))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2, height / 2));
d3.json("got_relationships.json", function(error, graph) {
if (error) throw error;
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) { return Math.sqrt(d.value); });
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 5)
.attr("fill", function(d) { return color(d.group); })
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
node.append("title")
.text(function(d) { return d.id; });
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
function ticked() {
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) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
</script>
There is a confusion between "labels" and "tooltips". Traditionally, we name "labels" the texts that show up next to the nodes without user interaction, and we name "tooltips" the texts that show up when the user interacts with the nodes (for instance, hovering the nodes).
So, if you mean "labels", this is a solution: append the nodes as groups...
var node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.call(d3.drag().on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
And append the circles and the labels (as <text> elements) to them:
node.append("circle")
.attr("r", 5)
.attr("fill", function(d) { return color(d.group); });
node.append("text")
.attr("dx", 6)
.text(function(d) { return d.id; });
Here is a demo using (most of) your code, with a made up data:
var graph = {
nodes:[
{"id": "A", "group": 1},
{"id": "B", "group": 2},
{"id": "C", "group": 2},
{"id": "D", "group": 2},
{"id": "E", "group": 2},
{"id": "F", "group": 3},
{"id": "G", "group": 3},
{"id": "H", "group": 3},
{"id": "I", "group": 3}
],
links:[
{"source": "A", "target": "B", "value": 1},
{"source": "B", "target": "C", "value": 1},
{"source": "A", "target": "D", "value": 1},
{"source": "H", "target": "E", "value": 1},
{"source": "I", "target": "F", "value": 1},
{"source": "A", "target": "G", "value": 1},
{"source": "B", "target": "H", "value": 1},
{"source": "A", "target": "I", "value": 1},
]
};
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var color = d3.scaleOrdinal(d3.schemeCategory20);
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.id; }).distance(40))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2, height / 2));
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) { return Math.sqrt(d.value); });
var node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
node.append("circle")
.attr("r", 5)
.attr("fill", function(d) { return color(d.group); });
node.append("text")
.attr("dx", 6)
.text(function(d) { return d.id; });
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
function ticked() {
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 dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
.links line {
stroke: #999;
stroke-opacity: 0.6;
}
.node circle {
stroke: #fff;
stroke-width: 1.5px;
}
.node text{
fill: #666;
font-family: Helvetica
}
<svg width="400" height="300"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>