This is a follow-on graph to the Basic Directional Force Layout Diagram and builds on it by allowing highlighting of individual nodes by clicking on them. These then remain highlighted untill you double click on them.
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November 30, 2019 18:25
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Directional Force Layout Diagram with Node Highlighting
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license: mit |
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source | target | value | |
---|---|---|---|
Harry | Sally | 1.2 | |
Harry | Mario | 1.3 | |
Sarah | Alice | 0.2 | |
Eveie | Alice | 0.5 | |
Peter | Alice | 1.6 | |
Mario | Alice | 0.4 | |
James | Alice | 0.6 | |
Harry | Carol | 0.7 | |
Harry | Nicky | 0.8 | |
Bobby | Frank | 0.8 | |
Alice | Mario | 0.7 | |
Harry | Lynne | 0.5 | |
Sarah | James | 1.9 | |
Roger | James | 1.1 | |
Maddy | James | 0.3 | |
Sonny | Roger | 0.5 | |
James | Roger | 1.5 | |
Alice | Peter | 1.1 | |
Johan | Peter | 1.6 | |
Alice | Eveie | 0.5 | |
Harry | Eveie | 0.1 | |
Eveie | Harry | 2.0 | |
Henry | Mikey | 0.4 | |
Elric | Mikey | 0.6 | |
James | Sarah | 1.5 | |
Alice | Sarah | 0.6 | |
James | Maddy | 0.5 | |
Peter | Johan | 0.7 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script> | |
<style> | |
path.link { | |
fill: none; | |
stroke: #666; | |
stroke-width: 1.5px; | |
} | |
circle { | |
fill: #ccc; | |
stroke: #fff; | |
stroke-width: 1.5px; | |
} | |
text { | |
fill: #000; | |
font: 10px sans-serif; | |
pointer-events: none; | |
} | |
</style> | |
<body> | |
<script> | |
// get the data | |
d3.csv("force.csv", function(error, links) { | |
var nodes = {}; | |
// Compute the distinct nodes from the links. | |
links.forEach(function(link) { | |
link.source = nodes[link.source] || | |
(nodes[link.source] = {name: link.source}); | |
link.target = nodes[link.target] || | |
(nodes[link.target] = {name: link.target}); | |
link.value = +link.value; | |
}); | |
var width = 960, | |
height = 500; | |
var force = d3.layout.force() | |
.nodes(d3.values(nodes)) | |
.links(links) | |
.size([width, height]) | |
.linkDistance(60) | |
.charge(-300) | |
.on("tick", tick) | |
.start(); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
// build the arrow. | |
svg.append("svg:defs").selectAll("marker") | |
.data(["end"]) // Different link/path types can be defined here | |
.enter().append("svg:marker") // This section adds in the arrows | |
.attr("id", String) | |
.attr("viewBox", "0 -5 10 10") | |
.attr("refX", 15) | |
.attr("refY", -1.5) | |
.attr("markerWidth", 6) | |
.attr("markerHeight", 6) | |
.attr("orient", "auto") | |
.append("svg:path") | |
.attr("d", "M0,-5L10,0L0,5"); | |
// add the links and the arrows | |
var path = svg.append("svg:g").selectAll("path") | |
.data(force.links()) | |
.enter().append("svg:path") | |
// .attr("class", function(d) { return "link " + d.type; }) | |
.attr("class", "link") | |
.attr("marker-end", "url(#end)"); | |
// define the nodes | |
var node = svg.selectAll(".node") | |
.data(force.nodes()) | |
.enter().append("g") | |
.attr("class", "node") | |
.on("click", click) | |
.on("dblclick", dblclick) | |
.call(force.drag); | |
// add the nodes | |
node.append("circle") | |
.attr("r", 5); | |
// add the text | |
node.append("text") | |
.attr("x", 12) | |
.attr("dy", ".35em") | |
.text(function(d) { return d.name; }); | |
// add the curvy lines | |
function tick() { | |
path.attr("d", function(d) { | |
var dx = d.target.x - d.source.x, | |
dy = d.target.y - d.source.y, | |
dr = Math.sqrt(dx * dx + dy * dy); | |
return "M" + | |
d.source.x + "," + | |
d.source.y + "A" + | |
dr + "," + dr + " 0 0,1 " + | |
d.target.x + "," + | |
d.target.y; | |
}); | |
node | |
.attr("transform", function(d) { | |
return "translate(" + d.x + "," + d.y + ")"; }); | |
} | |
// action to take on mouse click | |
function click() { | |
d3.select(this).select("text").transition() | |
.duration(750) | |
.attr("x", 22) | |
.style("fill", "steelblue") | |
.style("stroke", "lightsteelblue") | |
.style("stroke-width", ".5px") | |
.style("font", "20px sans-serif"); | |
d3.select(this).select("circle").transition() | |
.duration(750) | |
.attr("r", 16) | |
.style("fill", "lightsteelblue"); | |
} | |
// action to take on mouse double click | |
function dblclick() { | |
d3.select(this).select("circle").transition() | |
.duration(750) | |
.attr("r", 6) | |
.style("fill", "#ccc"); | |
d3.select(this).select("text").transition() | |
.duration(750) | |
.attr("x", 12) | |
.style("stroke", "none") | |
.style("fill", "black") | |
.style("stroke", "none") | |
.style("font", "10px sans-serif"); | |
} | |
}); | |
</script> | |
</body> | |
</html> |
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