habe ich diese Click-expand-Zusammenbruch Netzwerk - http://jsfiddle.net/5Lv8gkqv/Knoten Größe proportional zur Anzahl der Kinder in D3
var width = 960,
height = 500,
root = {
"name": "Chocolate", "tag":"class",
"children": [
{
"name": "Wafer", "tag":"subclass",
"children": [
{
"name": "Nestle", "tag":"company",
"children": [
{"name": "KitKat", "tag":"product"}
]
}
]
},
{
"name": "White", "tag":"subclass",
"children": [
{
"name": "Nestle", "tag":"company",
"children": [
{"name": "Milkybar", "tag":"product"}
]
}
]
},
{
"name": "Caramel", "tag":"subclass",
"children": [
{
"name": "Nestle", "tag":"company",
"children": [
{"name": "BarOne", "tag":"product"}
]
}
]
},
{
"name": "Milk", "tag":"subclass",
"children": [
{
"name": "Nestle", "tag":"company",
"children": [
{"name": "Nestle Milk", "tag":"product"}
]
}, {
"name": "Cadbury", "tag":"company",
"children": [
{"name": "Dairy Milk", "tag":"product"}
]
}
]
}
]
};
var force = d3.layout.force()
.linkDistance(150)
.charge(-120)
.gravity(.05)
.size([width, height])
.on("tick", tick);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var link = svg.selectAll(".link"),
node = svg.selectAll(".node");
flatten(root); //to set ids
setParents(root, null);
collapseAll(root);
root.children = root._children;
root._children = null;
update();
function update() {
var nodes = flatten(root),
links = d3.layout.tree().links(nodes);
// Restart the force layout.
force
.nodes(nodes)
.links(links)
.start();
// Update links.
link = link.data(links, function(d) { return d.target.id; });
link.exit().remove();
link.enter().insert("line", ".node")
.attr("class", "link");
// Update nodes.
node = node.data(nodes, function(d) { return d.id; });
node.exit().remove();
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.on("click", click)
.call(force.drag);
nodeEnter.append("circle")
.attr("r", function(d) { return Math.sqrt(d.size)/10 || 4.5; });
nodeEnter.append("text")
.attr("dy", ".35em")
.text(function(d) { return d.name; });
node.select("circle")
.style("fill", color);
}
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 color(d) {
return d._children ? "#3182bd" // collapsed package
: d.children ? "#c6dbef" // expanded package
: "#fd8d3c"; // leaf node
}
// Toggle children on click.
function click(d) {
if (d3.event.defaultPrevented) return; // ignore drag
if (d.children) {
collapseAll(d);
} else {
if (d._parent){
d._parent.children.forEach(function(e){
if (e != d){
collapseAll(e);
}
});
}
d.children = d._children;
d._children = null;
}
update();
}
function collapseAll(d){
if (d.children){
d.children.forEach(collapseAll);
d._children = d.children;
d.children = null;
}
else if (d._childred){
d._children.forEach(collapseAll);
}
}
// Returns a list of all nodes under the root.
function flatten(root) {
var nodes = [], i = 0;
function recurse(node) {
if (node.children) node.children.forEach(recurse);
if (!node.id) node.id = ++i;
nodes.push(node);
}
recurse(root);
return nodes;
}
function setParents(d, p){
d._parent = p;
if (d.children) {
d.children.forEach(function(e){ setParents(e,d);});
} else if (d._children) {
d._children.forEach(function(e){ setParents(e,d);});
}
}
Die Sache ist jetzt, dass ich frage mich, ob seine mögliche Knoten-Größe proportional zur Anzahl haben von Kindern. Also ist der Elternknoten der größte Kreis und der Blattknoten ist der kleinste, während die Zwischenknotengröße von der Anzahl der Kinder abhängt, die sie haben.
Wenn Sie nur nach unmittelbaren Kindern suchen, müssen Sie nur 'd.children.length' beim Einstellen des Radius: http://jsfiddle.net/5Lv8gkqv/1/ –