Want show only limited childeren of parent node in d3 sunburst chart

Want show only limited childeren of parent node in d3 sunburst chart - javascript

I have created 2 level sunburst chart on http://test.smokethis.com/wheel/ which is working perfectly.
But i want to validate my chart to show only 10 child of a particular parent and an additional node called "More child".
The behaviour on "More child" will be same as on click on parent. Which reveal all child of parent.
Image link of current situation
Image link of Resultant behaviour.Which i want
var d3Data = JSON.parse(jQuery('body .Jsondata').text())[0];
const m0 = {
id: "123",
variables: [
{
name: "chart",
inputs: ["partition","data","d3","DOM","width","color","arc","format","radius"],
value: (function(partition,data,d3,DOM,width,color,arc,format,radius)
{
var formatNumber = d3.format(",d");
var b = {
w: 140, h: 30, s: 3, t: 10
};
const root = partition(data);
root.each(d => d.current = d);
const svg = d3.select(DOM.svg(width, width))
.style("width", "100%")
.style("height", "auto")
.style("font", "20px sans-serif");
const g = svg.append("g")
.attr("transform", `translate(${width / 2},${width / 2})`);
const path = g.append("g")
.selectAll("path")
.data(root.descendants().slice(1))
.enter().append("path")
.attr("fill", d => { while (d.depth > 1) d = d.parent; console.log('d value--',d); return (typeof d.data.color != 'undefined' && d.data.color != '') ? d.data.color : color(d.data.name); })
.attr("fill-opacity", d => arcVisible(d.current) ? (d.children ? 0.6 : 0.4) : 0)
.attr("d", d => arc(d.current));
path.filter(d => d.children)
.style("cursor", "pointer")
.on("click", clicked);
path.append("title")
.text(d => `${d.ancestors().map(d => d.data.name).reverse().join("/")}\n${format(d.value)}`);
const label = g.append("g")
.attr("pointer-events", "none")
.attr("text-anchor", "middle")
.style("user-select", "none")
.selectAll("text")
.data(root.descendants().slice(1))
.enter().append("text")
.attr("dy", "0.35em")
.attr("fill-opacity", d => +labelVisible(d.current))
.attr("transform", d => labelTransform(d.current))
.text(d => d.data.name);
const parent = g.append("circle")
.datum(root)
.attr("r", radius)
.attr("fill", "none")
.attr("pointer-events", "all")
.on("click", clicked);
initializeBreadcrumbTrail();
return svg.node();
function clicked(p) {
updateBreadcrumbs(getParents(p),p.value);
var level = p.ancestors().map(p => p.data.name).reverse();
// var str = '';
// if(level.length > 1){
// for(var i=0;i<level.length;i++){
// str += '<span class="str_att show-pointer" style="background-color: #8cb125;margin-right:10px;border-radius: 5px;padding: 5px 10px;">'+level[i]+'</span>';
// }
// }
//jQuery('.breadCrumb').html(str);
console.log('level-=-',level);
parent.datum(p.parent || root);
root.each(d => d.target = {
x0: Math.max(0, Math.min(1, (d.x0 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI,
x1: Math.max(0, Math.min(1, (d.x1 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI,
y0: Math.max(0, d.y0 - p.depth),
y1: Math.max(0, d.y1 - p.depth)
});
const t = g.transition().duration(750);
//console.log('p',p);
// Transition the data on all arcs, even the ones that aren’t visible,
// so that if this transition is interrupted, entering arcs will start
// the next transition from the desired position.
path.transition(t)
.tween("data", d => {
const i = d3.interpolate(d.current, d.target);
return t => d.current = i(t);
})
.filter(function(d) {
return +this.getAttribute("fill-opacity") || arcVisible(d.target);
})
.attr("fill-opacity", d => arcVisible(d.target) ? (d.children ? 0.6 : 0.4) : 0)
.attrTween("d", d => () => arc(d.current));
label.filter(function(d) {
return +this.getAttribute("fill-opacity") || labelVisible(d.target);
}).transition(t)
.attr("fill-opacity", d => +labelVisible(d.target))
.attrTween("transform", d => () => labelTransform(d.current));
}
function initializeBreadcrumbTrail() {
// Add the svg area.
var trail = d3.select(".breadCrumb").append("svg:svg")
.attr("width", width)
.attr("height", width/10)
.attr("id", "trail");
// Add the label at the end, for the percentage.
trail.append("svg:text")
.attr("id", "endlabel")
.style("fill", "#000");
}
function updateBreadcrumbs(nodeArray, percentageString) {
// Data join; key function combines name and depth (= position in sequence).
var g = d3.select("#trail")
.selectAll("g").on("click", clicked)
.data(nodeArray, function(x) { return percentageString + x.data.name + x.depth; });
// Add breadcrumb and label for entering nodes.
var entering = g.enter().append("svg:g");
entering.append("svg:polygon")
.attr("points", breadcrumbPoints)
.style("fill", function(x) { return color(x.data.name); });
entering.append("svg:text")
.attr("x", (b.w + b.t) / 2)
.attr("y", b.h / 2)
.attr("dy", "0.35em")
.attr("text-anchor", "middle")
.text(function(x) { return x.data.name; });
entering.attr("transform", function(x, i) { return "translate(" + i* (b.w + b.s) + ", 0)"; });
// Remove exiting nodes.
g.exit().remove();
// Now move and update the percentage at the end.
d3.select("#trail").select("#endlabel")
.attr("x", (nodeArray.length + 0.5) * (b.w + b.s))
.attr("y", b.h / 2)
.attr("dy", "0.35em")
.attr("text-anchor", "middle")
.text(percentageString);
// Make the breadcrumb trail visible, if it's hidden.
d3.select("#trail")
.style("visibility", "");
}
function breadcrumbPoints(x, i) {
var points = [];
points.push("0,0");
points.push(b.w + ",0");
points.push(b.w + b.t + "," + (b.h / 2));
points.push(b.w + "," + b.h);
points.push("0," + b.h);
if (i > 0) { // Leftmost breadcrumb; don't include 6th vertex.
points.push(b.t + "," + (b.h / 2));
}
return points.join(" ");
}
function arcVisible(d) {
return d.y1 <= 3 && d.y0 >= 1 && d.x1 > d.x0;
}
function labelVisible(d) {
return d.y1 <= 3 && d.y0 >= 1 && (d.y1 - d.y0) * (d.x1 - d.x0) > 0.03;
}
function labelTransform(d) {
const x = (d.x0 + d.x1) / 2 * 180 / Math.PI;
const y = (d.y0 + d.y1) / 2 * radius;
return `rotate(${x - 90}) translate(${y},0) rotate(${x < 180 ? 0 : 180})`;
}
function getParents(a){
var nodeArray = [a];
while(a.parent){
nodeArray.push(a.parent);
a = a.parent
}
return nodeArray.reverse();
}
}
)
},
{
name: "data",
value: (function(){
return d3Data;
})
},
{
name: "partition",
inputs: ["d3"],
value: (function(d3){
// console.log('partition',d3);
return(
data => {
const root = d3.hierarchy(data)
.sum(d => d.size)
.sort((a, b) => b.value - a.value);
console.log('data',d3.partition().size([2 * Math.PI, root.height+1])(root));
return d3.partition()
.size([2 * Math.PI, root.height+1])
(root);
}
)
})
},
{
name: "color",
inputs: ["d3","data"],
value: (function(d3,data){return (
d3.scaleOrdinal().range(d3.quantize(d3.interpolateRainbow, data.children.length + 1))
)})
},
{
name: "format",
inputs: ["d3"],
value: (function(d3){return(
d3.format(",d")
)})
},
{
name: "width",
value: (function(){return(
932
)})
},
{
name: "radius",
inputs: ["width"],
value: (function(width){return(
width / 6
)})
},
{
name: "arc",
inputs: ["d3","radius"],
value: (function(d3,radius){return(
d3.arc()
.startAngle(d => d.x0)
.endAngle(d => d.x1)
.padAngle(d => Math.min((d.x1 - d.x0) / 2, 0.005))
.padRadius(radius * 1.5)
.innerRadius(d => d.y0 * radius)
.outerRadius(d => Math.max(d.y0 * radius, d.y1 * radius - 1))
)})
},
{
name: "d3",
inputs: ["require"],
value: (function(require){return(
require("https://d3js.org/d3.v5.min.js")
)})
}
]
};
const notebook = {
id: "123",
modules: [m0]
};
function loadData(){
$.ajax({
type:'GET',
url:'http://shopnz.in/wp-admin/admin-ajax.php?action=wp_ajax_list_items&sunburst=sunburstcat',
success: function(response){
console.log('response',response[0]);
console.log('data-=-=',data);
data = response[0];
}
});
}
export default notebook;
[{"name":"Balance","term_id":"588","slug":"balance","parent":"0","has_children":true,"color":"#aac62d","children":[{"name":"Aroma","term_id":"589","slug":"aroma","parent":"588","has_children":true,"color":"#aac62d","children":[{"name":"Earth","term_id":"593","slug":"earth","parent":"589","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Fruit","term_id":"594","slug":"fruit","parent":"589","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Herb","term_id":"595","slug":"herb","parent":"589","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Pungent","term_id":"596","slug":"pungent","parent":"589","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Spice","term_id":"597","slug":"spice","parent":"589","has_children":false,"size":"1000","color":"#aac62d"}]},{"name":"Health","term_id":"590","slug":"health","parent":"588","has_children":true,"color":"#aac62d","children":[{"name":"Body","term_id":"598","slug":"body","parent":"590","has_children":true,"color":"#aac62d","children":[{"name":"Fatigue","term_id":"613","slug":"fatigue","parent":"598","has_children":true,"color":"#aac62d","children":[{"name":"Sleep","term_id":"616","slug":"sleep","parent":"613","has_children":false,"size":"1000","color":"#aac62d"}]},{"name":"PainRelief","term_id":"614","slug":"painrelief","parent":"598","has_children":true,"color":"#aac62d","children":[{"name":"Spasms","term_id":"617","slug":"spasms","parent":"614","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Relaxed","term_id":"618","slug":"relaxed","parent":"614","has_children":false,"size":"1000","color":"#aac62d"}]},{"name":"Digestion","term_id":"615","slug":"digestion","parent":"598","has_children":true,"color":"#aac62d","children":[{"name":"Appetite","term_id":"619","slug":"appetite","parent":"615","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Nausea","term_id":"620","slug":"nausea","parent":"615","has_children":false,"size":"1000","color":"#aac62d"}]}]},{"name":"Mind","term_id":"599","slug":"mind","parent":"590","has_children":true,"color":"#aac62d","children":[{"name":"Behavior","term_id":"621","slug":"behavior","parent":"599","has_children":true,"color":"#aac62d","children":[{"name":"Sedative","term_id":"623","slug":"sedative","parent":"621","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Energetic","term_id":"624","slug":"energetic","parent":"621","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Focus","term_id":"625","slug":"focus","parent":"621","has_children":false,"size":"1000","color":"#aac62d"}]},{"name":"Mood","term_id":"622","slug":"mood","parent":"599","has_children":true,"color":"#aac62d","children":[{"name":"Creative","term_id":"626","slug":"creative","parent":"622","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Uplifted","term_id":"627","slug":"uplifted","parent":"622","has_children":false,"size":"1000","color":"#aac62d"}]}]}]},{"name":"Medical","term_id":"591","slug":"medical","parent":"588","has_children":true,"color":"#aac62d","children":[{"name":"Condition","term_id":"600","slug":"condition","parent":"591","has_children":true,"color":"#aac62d","children":[{"name":"Cancer","term_id":"602","slug":"cancer","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"PMS","term_id":"603","slug":"pms","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Arthritis","term_id":"628","slug":"arthritis","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Asthma","term_id":"629","slug":"asthma","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Cachexia","term_id":"630","slug":"cachexia","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Crohn\u2019s Disease","term_id":"631","slug":"crohns-disease","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Depression (currently a 'symptom')","term_id":"632","slug":"depression-currently-a-symptom","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Epilepsy","term_id":"633","slug":"epilepsy","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Gastrointestinal Disorder","term_id":"634","slug":"gastrointestinal-disorder","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Hypertension","term_id":"635","slug":"hypertension","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Parkinson\u2019s","term_id":"636","slug":"parkinsons","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Phantom Limb Pain","term_id":"637","slug":"phantom-limb-pain","parent":"600","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Spinal Cord Injury","term_id":"638","slug":"spinal-cord-injury","parent":"600","has_children":false,"size":"1000","color":"#aac62d"}]},{"name":"Symptom","term_id":"601","slug":"symptom","parent":"591","has_children":true,"color":"#aac62d","children":[{"name":"Anxiety","term_id":"604","slug":"anxiety","parent":"601","has_children":true,"color":"#aac62d","children":[{"name":"ACDC","term_id":"612","slug":"acdc","parent":"604","has_children":false,"size":"1000","color":"#aac62d"}]},{"name":"Depresssion","term_id":"605","slug":"depresssion","parent":"601","has_children":false,"size":"1000","color":"#aac62d"}]}]},{"name":"Terpenes","term_id":"592","slug":"terpenes","parent":"588","has_children":true,"color":"#aac62d","children":[{"name":"Humulene","term_id":"606","slug":"humulene","parent":"592","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Limonene","term_id":"607","slug":"limonene","parent":"592","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Linalool","term_id":"608","slug":"linalool","parent":"592","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Myrcene","term_id":"609","slug":"myrcene","parent":"592","has_children":false,"size":"1000","color":"#aac62d"},{"name":"Pinene","term_id":"610","slug":"pinene","parent":"592","has_children":true,"color":"#aac62d","children":[{"name":"Romulan","term_id":"611","slug":"romulan","parent":"610","has_children":false,"size":"1000","color":"#aac62d"}]}]}]}]
This is my data.

Related

How to show negative value in sunburst chart using d3.js

I am stuck badly while trying to show negative values in sunburst chart. whenever I change the value in json file as negative the slice just gets hidden. I want the arc to show even if my arc has negative value.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="//d3js.org/d3.v7.min.js"></script>
</head>
<body>
<script>
chart = () => {
var color = d3.scaleOrdinal()
.range(['red', 'green', 'lightgreen']);
const root = partition(data);
root.each(d => d.current = d);
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, width])
.style("font", "11px sans-serif")
// .style('fill', 'black')
console.log(svg)
const g = svg.append("g")
.attr("transform", `translate(${width / 2.5},${width / 2})`);
const path = g.append("g")
.selectAll("path")
.data(root.descendants().slice(1))
.join("path")
.attr('fill', function (d, i, value) {
if (d.data.value > 10) {
return 'green'
} else if (d.data.value < 5) {
return 'red'
}
else if (d.data.value < 1) {
return 'lightgreen'
}
return color(i)
})
.attr("fill-opacity", d => arcVisible(d.current) ? (d.value ? 0.7 : 0.4) : 0)
.attr("d", d => arc(d.current));
path.filter(d => d.children)
.style("cursor", "pointer")
.on("click", clicked);
path.append("title")
.text(d => `${d.ancestors().map(d => d.data.name).reverse().join("-")} : ${format(d.value)} points`);
path.append("info")
.text(d => `${d.ancestors().map(d => d.data.size).reverse().join("/")}\n${format(d.value)}`);
const label = g.append("g")
.attr("pointer-events", "none")
.attr("text-anchor", "middle")
.style("user-select", "none")
.selectAll("text")
.data(root.descendants().slice(1))
.join("text")
.attr("dy", "0.35em")
.attr("fill-opacity", d => +labelVisible(d.current))
.attr("transform", d => labelTransform(d.current))
.text(d => d.data.name + '\n' + d.data.value);
const parent = g.append("circle")
.datum(root)
.attr("r", radius)
.attr("fill", "green")
.attr("pointer-events", "all")
.on("click", clicked);
function clicked(event, p) {
parent.datum(p.parent || root);
root.each(d => d.target = {
x0: Math.max(0, Math.min(1, (d.x0 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI,
x1: Math.max(0, Math.min(1, (d.x1 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI,
y0: Math.max(0, d.y0 - p.depth),
y1: Math.max(0, d.y1 - p.depth)
});
const t = g.transition().duration(1050);
// Transition the data on all arcs, even the ones that aren’t visible,
// so that if this transition is interrupted, entering arcs will start
// the next transition from the desired position.
path.transition(t)
.tween("data", d => {
const i = d3.interpolate(d.current, d.target);
return t => d.current = i(t);
})
.filter(function (d) {
return +this.getAttribute("fill-opacity") || arcVisible(d.target);
})
.attr("fill-opacity", d => arcVisible(d.target) ? (d.children ? 0.6 : 0.4) : 0)
.attrTween("d", d => () => arc(d.current));
label.filter(function (d) {
return +this.getAttribute("fill-opacity") || labelVisible(d.target);
}).transition(t)
.attr("fill-opacity", d => +labelVisible(d.target))
.attrTween("transform", d => () => labelTransform(d.current));
}
function arcVisible(d) {
return d.y1 <= 3 && d.y0 >= 1 && d.x1 > d.x0;
}
function labelVisible(d) {
return d.y1 <= 3 && d.y0 >= 1 && (d.y1 - d.y0) * (d.x1 - d.x0) > 0.03;
}
function labelTransform(d) {
const x = (d.x0 + d.x1) / 2 * 180 / Math.PI;
const y = (d.y0 + d.y1) / 2 * radius;
return `rotate(${x - 90}) translate(${y},0) rotate(${x < 180 ? 0 : 180})`;
}
return svg.node();
}
adder = 10
data = {
"name": "KSE100",
"children": [
{
"name": "TEXTILE",
'value': 10,
"children": [
{
"name": "COST",
"value": 4,
// 'points': 4
},
{
"name": "COOT",
"value": 3,
// 'points': 5
},
{
"name": "AHTM",
"value": "-3",
// 'points': 5
},
]
},
{
"name": "OIL",
'value': 8,
"children": [
{
"name": "PSO",
"value": 2,
//'points': -20
},
{
"name": "BYCO",
"value": 6,
// 'points': -20
},
{
"name": "MPCL",
"value": 2,
//'points': 10
},
]
},
/
]
}
partition = data => {
const root = d3.hierarchy(data)
.sum(d => d.value)
.sort((a, b) => b.value - a.value);
return d3.partition()
.size([2 * Math.PI, root.height + 1])
(root);
}
// color = d3.scaleOrdinal(d3.quantize(d3.interpolateRainbow, data.children.length + 1))
format = d3.format(",d")
width = 900
radius = width / 10
arc = d3.arc()
.startAngle(d => d.x0)
.endAngle(d => d.x1)
.padAngle(d => Math.min((d.x1 - d.x0) / 2, 0.005))
.padRadius(radius * 1.5)
.innerRadius(d => d.y0 * radius)
.outerRadius(d => Math.max(d.y0 * radius, d.y1 * radius - 1))
const svg = d3.select('body').append(chart)
</script>
</body>
</html>
I have been stuck in this since ages, I would be really thankfull if any of you can help me with this.

Persisting the state of d3 treemap on drilling down to child nodes

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class Treegraph extends React.Component {
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.attr("class", "toolTip");
d3.select(window.frameElement).style("height", height - 20 + "px");
d3.select(window.frameElement).style("width", width - 20 + "px");
node
.append("rect")
.attr("id", d => (d.leafUid = "leaf"))
.attr("fill", d =>
d === root ? "#fff" : d.children ? "#045c79" : "#045c79"
)
.attr("stroke", "#fff")
.on("mousemove", function(d) {
tool.style("left", d3.event.pageX + 10 + "px");
tool.style("top", d3.event.pageY - 20 + "px");
tool.style("display", "inline-block");
tool.html(`${d.data.name}<br />(${format(d.data.value)})`);
})
.on("click", function(d) {
tool.style("display", "none");
})
.on("mouseout", function(d) {
tool.style("display", "none");
});
node
.append("foreignObject")
.attr("class", "foreignObject")
.attr("width", function(d) {
return d.dx - paddingAllowance;
})
.attr("height", function(d) {
return d.dy - paddingAllowance;
})
.append("xhtml:body")
.attr("class", "labelbody")
.append("div")
.attr("class", "label")
.text(function(d) {
return d.name;
})
.attr("text-anchor", "middle");
node
.append("clipPath")
.attr("id", d => (d.clipUid = "clip"))
.append("use")
.attr("xlink:href", d => d.leafUid.href);
node
.append("text")
.attr("clip-path", d => d.clipUid)
.attr("font-weight", d => (d === root ? "bold" : null))
.attr("font-size", d => {
if (d === root) return "0.8em";
const width = x(d.x1) - x(d.x0),
height = y(d.y1) - y(d.y0);
return Math.max(
Math.min(
width / 5,
height / 2,
Math.sqrt(width * width + height * height) / 25
),
9
);
})
.attr("text-anchor", d => (d === root ? null : "middle"))
.attr("transform", d =>
d === root
? null
: `translate(${(x(d.x1) - x(d.x0)) / 2}, ${(y(d.y1) - y(d.y0)) /
2})`
)
.selectAll("tspan")
.data(d =>
d === root
? name(d).split(/(?=\/)/g)
: checkLowVal(d)
? d.data.name.split(/(\s+)/).concat(format(d.data.value))
: d.data.name.split(/(\s+)/).concat(format(d.data.value))
)
.join("tspan")
.attr("x", 3)
.attr(
"y",
(d, i, nodes) =>
`${(i === nodes.length - 1) * 0.3 + (i - nodes.length / 2) * 0.9}em`
)
.text(d => d);
node
.selectAll("text")
.classed("text-title", d => d === root)
.classed("text-tile", d => d !== root)
.filter(d => d === root)
.selectAll("tspan")
.attr("y", "1.1em")
.attr("x", undefined);
group.call(position, root);
}
function position(group, root) {
group
.selectAll("g")
.attr("transform", d =>
d === root ? `translate(0,-30)` : `translate(${x(d.x0)},${y(d.y0)})`
)
.select("rect")
.attr("width", d => (d === root ? width : x(d.x1) - x(d.x0)))
.attr("height", d => (d === root ? 30 : y(d.y1) - y(d.y0)));
}
// When zooming in, draw the new nodes on top, and fade them in.
function zoomin(d) {
console.log("The zoomin func", d.data);
x.domain([d.x0, d.x1]);
y.domain([d.y0, d.y1]);
const group0 = group.attr("pointer-events", "none");
const group1 = (group = svg.append("g").call(render, d));
svg
.transition()
.duration(750)
.call(t =>
group0
.transition(t)
.remove()
.call(position, d.parent)
)
.call(t =>
group1
.transition(t)
.attrTween("opacity", () => d3.interpolate(0, 1))
.call(position, d)
);
}
// When zooming out, draw the old nodes on top, and fade them out.
function zoomout(d) {
console.log("The zoomout func", d.parent.data);
x.domain([d.parent.x0, d.parent.x1]);
y.domain([d.parent.y0, d.parent.y1]);
const group0 = group.attr("pointer-events", "none");
const group1 = (group = svg.insert("g", "*").call(render, d.parent));
svg
.transition()
.duration(750)
.call(t =>
group0
.transition(t)
.remove()
.attrTween("opacity", () => d3.interpolate(1, 0))
.call(position, d)
)
.call(t => group1.transition(t).call(position, d.parent));
}
return svg.node();
};
componentDidMount() {
this.createTreeChart();
}
render() {
return (
<React.Fragment>
<div id="chart" />
</React.Fragment>
);
}
}

Here is a quick idea, store the name as ID on local storage. Hopefully name is unique, otherwise make sure you have an unique ID for each node.
https://codesandbox.io/s/d3-treemap-4ehbf?file=/src/treegraph.js
first load localstorage for lastSelection with last selected node name
componentDidMount() {
const lastSelection = localStorage.getItem("lastSelection");
console.log("lastSelection:", lastSelection);
this.createTreeChart(lastSelection);
}
add a parameter to you createTreeChart so when it loads and there is a lastaSelection you have to reload that state
createTreeChart = (lastSelection = null) => {
decouple your treemap in a variable, filter the lastSelection node and zoomin into it. this step could be improved, not sure if the refreshing zoomin is interesting.
const tree = treemap(data);
let group = svg.append("g").call(render, tree);
if (lastSelection !== null) {
const lastNode = tree
.descendants()
.find(e => e.data.name === lastSelection);
zoomin(lastNode);
}
finally update localStorage on node click.
node
.filter(d => (d === root ? d.parent : d.children))
.attr("cursor", "pointer")
.on("click", d => {
if (d === root) {
localStorage.setItem("lastSelection", null);
zoomout(root);
} else {
localStorage.setItem("lastSelection", d.data.name);
zoomin(d);
}
});
This could be improved, but it's a starting point.

D3.js hierarchical edge bundling coloring by group

I am trying to color the connections in my hierarchical edge bundling visualization based on the groups they are connecting to. An example of this can be seen here.
Here is my current mouseover function:
function mouseover(d) {
svg.selectAll("path.link.target-" + d.key)
.classed("target", true)
.each(updateNodes("source", true));
svg.selectAll("path.link.source-" + d.key)
.classed("source", true)
.each(updateNodes("target", true));
}
And here is the mouseover function from the example I've posted:
function mouseovered(d)
{
// Handle tooltip
// Tooltips should avoid crossing into the center circle
d3.selectAll("#tooltip").remove();
d3.selectAll("#vis")
.append("xhtml:div")
.attr("id", "tooltip")
.style("opacity", 0)
.html(d.title);
var mouseloc = d3.mouse(d3.select("#vis")[0][0]),
my = ((rotateit(d.x) > 90) && (rotateit(d.x) < 270)) ? mouseloc[1] + 10 : mouseloc[1] - 35,
mx = (rotateit(d.x) < 180) ? (mouseloc[0] + 10) : Math.max(130, (mouseloc[0] - 10 - document.getElementById("tooltip").offsetWidth));
d3.selectAll("#tooltip").style({"top" : my + "px", "left": mx + "px"});
d3.selectAll("#tooltip")
.transition()
.duration(500)
.style("opacity", 1);
node.each(function(n) { n.target = n.source = false; });
currnode = d3.select(this)[0][0].__data__;
link.classed("link--target", function(l) {
if (l.target === d)
{
return l.source.source = true;
}
if (l.source === d)
{
return l.target.target = true;
}
})
.filter(function(l) { return l.target === d || l.source === d; })
.attr("stroke", function(d){
if (d[0].name == currnode.name)
{
return color(d[2].cat);
}
return color(d[0].cat);
})
.each(function() { this.parentNode.appendChild(this); });
d3.selectAll(".link--clicked").each(function() { this.parentNode.appendChild(this); });
node.classed("node--target", function(n) {
return (n.target || n.source);
});
}
I am somewhat new to D3, but I am assuming what I'll need to do is check the group based on the key and then match it to the same color as that group.
My full code is here:
<script type="text/javascript">
color = d3.scale.category10();
var w = 840,
h = 800,
rx = w / 2,
ry = h / 2,
m0,
rotate = 0
pi = Math.PI;
var splines = [];
var cluster = d3.layout.cluster()
.size([360, ry - 180])
.sort(function(a, b) {
return d3.ascending(a.key, b.key);
});
var bundle = d3.layout.bundle();
var line = d3.svg.line.radial()
.interpolate("bundle")
.tension(.5)
.radius(function(d) {
return d.y;
})
.angle(function(d) {
return d.x / 180 * Math.PI;
});
// Chrome 15 bug: <http://code.google.com/p/chromium/issues/detail?id=98951>
var div = d3.select("#bundle")
.style("width", w + "px")
.style("height", w + "px")
.style("position", "absolute");
var svg = div.append("svg:svg")
.attr("width", w)
.attr("height", w)
.append("svg:g")
.attr("transform", "translate(" + rx + "," + ry + ")");
svg.append("svg:path")
.attr("class", "arc")
.attr("d", d3.svg.arc().outerRadius(ry - 180).innerRadius(0).startAngle(0).endAngle(2 * Math.PI))
.on("mousedown", mousedown);
d3.json("TASKS AND PHASES.json", function(classes) {
var nodes = cluster.nodes(packages.root(classes)),
links = packages.imports(nodes),
splines = bundle(links);
var path = svg.selectAll("path.link")
.data(links)
.enter().append("svg:path")
.attr("class", function(d) {
return "link source-" + d.source.key + " target-" + d.target.key;
})
.attr("d", function(d, i) {
return line(splines[i]);
});
var groupData = svg.selectAll("g.group")
.data(nodes.filter(function(d) {
return (d.key == 'Department' || d.key == 'Software' || d.key == 'Tasks' || d.key == 'Phases') && d.children;
}))
.enter().append("group")
.attr("class", "group");
var groupArc = d3.svg.arc()
.innerRadius(ry - 177)
.outerRadius(ry - 157)
.startAngle(function(d) {
return (findStartAngle(d.__data__.children) - 2) * pi / 180;
})
.endAngle(function(d) {
return (findEndAngle(d.__data__.children) + 2) * pi / 180
});
svg.selectAll("g.arc")
.data(groupData[0])
.enter().append("svg:path")
.attr("d", groupArc)
.attr("class", "groupArc")
.attr("id", function(d, i) {console.log(d.__data__.key); return d.__data__.key;})
.style("fill", function(d, i) {return color(i);})
.style("fill-opacity", 0.5)
.each(function(d,i) {
var firstArcSection = /(^.+?)L/;
var newArc = firstArcSection.exec( d3.select(this).attr("d") )[1];
newArc = newArc.replace(/,/g , " ");
svg.append("path")
.attr("class", "hiddenArcs")
.attr("id", "hidden"+d.__data__.key)
.attr("d", newArc)
.style("fill", "none");
});
svg.selectAll(".arcText")
.data(groupData[0])
.enter().append("text")
.attr("class", "arcText")
.attr("dy", 15)
.append("textPath")
.attr("startOffset","50%")
.style("text-anchor","middle")
.attr("xlink:href",function(d,i){return "#hidden" + d.__data__.key;})
.text(function(d){return d.__data__.key;});
svg.selectAll("g.node")
.data(nodes.filter(function(n) {
return !n.children;
}))
.enter().append("svg:g")
.attr("class", "node")
.attr("id", function(d) {
return "node-" + d.key;
})
.attr("transform", function(d) {
return "rotate(" + (d.x - 90) + ")translate(" + d.y + ")";
})
.append("svg:text")
.attr("dx", function(d) {
return d.x < 180 ? 25 : -25;
})
.attr("dy", ".31em")
.attr("text-anchor", function(d) {
return d.x < 180 ? "start" : "end";
})
.attr("transform", function(d) {
return d.x < 180 ? null : "rotate(180)";
})
.text(function(d) {
return d.key.replace(/_/g, ' ');
})
.on("mouseover", mouseover)
.on("mouseout", mouseout);
d3.select("input[type=range]").on("change", function() {
line.tension(this.value / 100);
path.attr("d", function(d, i) {
return line(splines[i]);
});
});
});
d3.select(window)
.on("mousemove", mousemove)
.on("mouseup", mouseup);
function mouse(e) {
return [e.pageX - rx, e.pageY - ry];
}
function mousedown() {
m0 = mouse(d3.event);
d3.event.preventDefault();
}
function mousemove() {
if (m0) {
var m1 = mouse(d3.event),
dm = Math.atan2(cross(m0, m1), dot(m0, m1)) * 180 / Math.PI;
div.style("-webkit-transform", "translate3d(0," + (ry - rx) + "px,0)rotate3d(0,0,0," + dm + "deg)translate3d(0," + (rx - ry) + "px,0)");
}
}
function mouseup() {
if (m0) {
var m1 = mouse(d3.event),
dm = Math.atan2(cross(m0, m1), dot(m0, m1)) * 180 / Math.PI;
rotate += dm;
if (rotate > 360) rotate -= 360;
else if (rotate < 0) rotate += 360;
m0 = null;
div.style("-webkit-transform", "rotate3d(0,0,0,0deg)");
svg.attr("transform", "translate(" + rx + "," + ry + ")rotate(" + rotate + ")")
.selectAll("g.node text")
.attr("dx", function(d) {
return (d.x + rotate) % 360 < 180 ? 25 : -25;
})
.attr("text-anchor", function(d) {
return (d.x + rotate) % 360 < 180 ? "start" : "end";
})
.attr("transform", function(d) {
return (d.x + rotate) % 360 < 180 ? null : "rotate(180)";
});
}
}
function mouseover(d) {
svg.selectAll("path.link.target-" + d.key)
.classed("target", true)
.each(updateNodes("source", true));
svg.selectAll("path.link.source-" + d.key)
.classed("source", true)
.each(updateNodes("target", true));
}
function mouseout(d) {
svg.selectAll("path.link.source-" + d.key)
.classed("source", false)
.each(updateNodes("target", false));
svg.selectAll("path.link.target-" + d.key)
.classed("target", false)
.each(updateNodes("source", false));
}
function updateNodes(name, value) {
return function(d) {
if (value) this.parentNode.appendChild(this);
svg.select("#node-" + d[name].key).classed(name, value);
};
}
function cross(a, b) {
return a[0] * b[1] - a[1] * b[0];
}
function dot(a, b) {
return a[0] * b[0] + a[1] * b[1];
}
function findStartAngle(children) {
var min = children[0].x;
children.forEach(function(d) {
if (d.x < min)
min = d.x;
});
return min;
}
function findEndAngle(children) {
var max = children[0].x;
children.forEach(function(d) {
if (d.x > max)
max = d.x;
});
return max;
}
</script>

Here's an example solution in D3 v6 adapting the Observable example plus my answer to this other question. Basic points:
You will to add the 'group' into the input data - for the data you mention in the comments I've defined group as the 2nd element (per dot separation) of the name. The hierarchy function in the Observable appears to strip this.
It's probably fortunate that all the name values are e.g. root.parent.child - this makes the leafGroups work quite well for your data (but might not for asymmetric hierarchies).
Define a colour range e.g. const colors = d3.scaleOrdinal().domain(leafGroups.map(d => d[0])).range(d3.schemeTableau10); which you can use for arcs, label text (nodes), paths (links)
I've avoided using the mix-blend-mode styling with the example as it doesn't look good to me.
I'm applying the styles in overed and outed - see below for the logic.
See the comments in overed for styling logic on mouseover:
function overed(event, d) {
//link.style("mix-blend-mode", null);
d3.select(this)
// set dark/ bold on hovered node
.style("fill", colordark)
.attr("font-weight", "bold");
d3.selectAll(d.incoming.map(d => d.path))
// each link has data with source and target so you can get group
// and therefore group color; 0 for incoming and 1 for outgoing
.attr("stroke", d => colors(d[0].data.group))
// increase stroke width for emphasis
.attr("stroke-width", 4)
.raise();
d3.selectAll(d.outgoing.map(d => d.path))
// each link has data with source and target so you can get group
// and therefore group color; 0 for incoming and 1 for outgoing
.attr("stroke", d => colors(d[1].data.group))
// increase stroke width for emphasis
.attr("stroke-width", 4)
.raise()
d3.selectAll(d.incoming.map(([d]) => d.text))
// source and target nodes to go dark and bold
.style("fill", colordark)
.attr("font-weight", "bold");
d3.selectAll(d.outgoing.map(([, d]) => d.text))
// source and target nodes to go dark and bold
.style("fill", colordark)
.attr("font-weight", "bold");
}
See the comments in outed for styling logic on mouseout:
function outed(event, d) {
//link.style("mix-blend-mode", "multiply");
d3.select(this)
// hovered node to revert to group colour on mouseout
.style("fill", d => colors(d.data.group))
.attr("font-weight", null);
d3.selectAll(d.incoming.map(d => d.path))
// incoming links to revert to 'colornone' and width 1 on mouseout
.attr("stroke", colornone)
.attr("stroke-width", 1);
d3.selectAll(d.outgoing.map(d => d.path))
// incoming links to revert to 'colornone' and width 1 on mouseout
.attr("stroke", colornone)
.attr("stroke-width", 1);
d3.selectAll(d.incoming.map(([d]) => d.text))
// incoming nodes to revert to group colour on mouseout
.style("fill", d => colors(d.data.group))
.attr("font-weight", null);
d3.selectAll(d.outgoing.map(([, d]) => d.text))
// incoming nodes to revert to group colour on mouseout
.style("fill", d => colors(d.data.group))
.attr("font-weight", null);
}
Working example with the data you mentioned in the comments:
const url = "https://gist.githubusercontent.com/robinmackenzie/5c5d2af4e3db47d9150a2c4ba55b7bcd/raw/9f9c6b92d24bd9f9077b7fc6c4bfc5aebd2787d5/harvard_vis.json";
const colornone = "#ccc";
const colordark = "#222";
const width = 600;
const radius = width / 2;
d3.json(url).then(json => {
// hack in the group name to each object
json.forEach(o => o.group = o.name.split(".")[1]);
// then render
render(json);
});
function render(data) {
const line = d3.lineRadial()
.curve(d3.curveBundle.beta(0.85))
.radius(d => d.y)
.angle(d => d.x);
const tree = d3.cluster()
.size([2 * Math.PI, radius - 100]);
const root = tree(bilink(d3.hierarchy(hierarchy(data))
.sort((a, b) => d3.ascending(a.height, b.height) || d3.ascending(a.data.name, b.data.name))));
const svg = d3.select("body")
.append("svg")
.attr("width", width)
.attr("height", width)
.append("g")
.attr("transform", `translate(${radius},${radius})`);
const arcInnerRadius = radius - 100;
const arcWidth = 20;
const arcOuterRadius = arcInnerRadius + arcWidth;
const arc = d3
.arc()
.innerRadius(arcInnerRadius)
.outerRadius(arcOuterRadius)
.startAngle((d) => d.start)
.endAngle((d) => d.end);
const leafGroups = d3.groups(root.leaves(), d => d.parent.data.name);
const arcAngles = leafGroups.map(g => ({
name: g[0],
start: d3.min(g[1], d => d.x),
end: d3.max(g[1], d => d.x)
}));
const colors = d3.scaleOrdinal().domain(leafGroups.map(d => d[0])).range(d3.schemeTableau10);
svg
.selectAll(".arc")
.data(arcAngles)
.enter()
.append("path")
.attr("id", (d, i) => `arc_${i}`)
.attr("d", (d) => arc({start: d.start, end: d.end}))
.attr("fill", d => colors(d.name))
svg
.selectAll(".arcLabel")
.data(arcAngles)
.enter()
.append("text")
.attr("x", 5)
.attr("dy", (d) => ((arcOuterRadius - arcInnerRadius) * 0.8))
.append("textPath")
.attr("class", "arcLabel")
.attr("xlink:href", (d, i) => `#arc_${i}`)
.text((d, i) => ((d.end - d.start) < (6 * Math.PI / 180)) ? "" : d.name);
// add nodes
const node = svg.append("g")
.attr("font-family", "sans-serif")
.attr("font-size", 10)
.selectAll("g")
.data(root.leaves())
.join("g")
.attr("transform", d => `rotate(${d.x * 180 / Math.PI - 90}) translate(${d.y}, 0)`)
.append("text")
.attr("dy", "0.31em")
.attr("x", d => d.x < Math.PI ? (arcWidth + 5) : (arcWidth + 5) * -1)
.attr("text-anchor", d => d.x < Math.PI ? "start" : "end")
.attr("transform", d => d.x >= Math.PI ? "rotate(180)" : null)
.text(d => d.data.name)
.style("fill", d => colors(d.data.group))
.each(function(d) { d.text = this; })
.on("mouseover", overed)
.on("mouseout", outed)
.call(text => text.append("title").text(d => `${id(d)} ${d.outgoing.length} outgoing ${d.incoming.length} incoming`));
// add edges
const link = svg.append("g")
.attr("stroke", colornone)
.attr("fill", "none")
.selectAll("path")
.data(root.leaves().flatMap(leaf => leaf.outgoing))
.join("path")
//.style("mix-blend-mode", "multiply")
.attr("d", ([i, o]) => line(i.path(o)))
.each(function(d) { d.path = this; });
function overed(event, d) {
//link.style("mix-blend-mode", null);
d3.select(this)
.style("fill", colordark)
.attr("font-weight", "bold");
d3.selectAll(d.incoming.map(d => d.path))
.attr("stroke", d => colors(d[0].data.group))
.attr("stroke-width", 4)
.raise();
d3.selectAll(d.outgoing.map(d => d.path))
.attr("stroke", d => colors(d[1].data.group))
.attr("stroke-width", 4)
.raise()
d3.selectAll(d.incoming.map(([d]) => d.text))
.style("fill", colordark)
.attr("font-weight", "bold");
d3.selectAll(d.outgoing.map(([, d]) => d.text))
.style("fill", colordark)
.attr("font-weight", "bold");
}
function outed(event, d) {
//link.style("mix-blend-mode", "multiply");
d3.select(this)
.style("fill", d => colors(d.data.group))
.attr("font-weight", null);
d3.selectAll(d.incoming.map(d => d.path))
.attr("stroke", colornone)
.attr("stroke-width", 1);
d3.selectAll(d.outgoing.map(d => d.path))
.attr("stroke", colornone)
.attr("stroke-width", 1);
d3.selectAll(d.incoming.map(([d]) => d.text))
.style("fill", d => colors(d.data.group))
.attr("font-weight", null);
d3.selectAll(d.outgoing.map(([, d]) => d.text))
.style("fill", d => colors(d.data.group))
.attr("font-weight", null);
}
function id(node) {
return `${node.parent ? id(node.parent) + "." : ""}${node.data.name}`;
}
function bilink(root) {
const map = new Map(root.leaves().map(d => [id(d), d]));
for (const d of root.leaves()) d.incoming = [], d.outgoing = d.data.imports.map(i => [d, map.get(i)]);
for (const d of root.leaves()) for (const o of d.outgoing) o[1].incoming.push(o);
return root;
}
function hierarchy(data, delimiter = ".") {
let root;
const map = new Map;
data.forEach(function find(data) {
const {name} = data;
if (map.has(name)) return map.get(name);
const i = name.lastIndexOf(delimiter);
map.set(name, data);
if (i >= 0) {
find({name: name.substring(0, i), children: []}).children.push(data);
data.name = name.substring(i + 1);
} else {
root = data;
}
return data;
});
return root;
}
}
.node {
font: 300 11px "Helvetica Neue", Helvetica, Arial, sans-serif;
fill: #fff;
}
.arcLabel {
font: 300 14px "Helvetica Neue", Helvetica, Arial, sans-serif;
fill: #fff;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/6.0.0/d3.min.js"></script>

d3 update tree layout with dynamic data

What's the easiest way to update model with d3 tree layout.
here's the example
http://jsfiddle.net/mnk/vfro9tkz/
var data = {
name: 'Music',
children: [{
name: 'Rock',
children: [{
name: 'Two'
}, {
name: 'Three',
children: [{
name: 'A'
}, {
name: 'Bonjourallo'
}, {
name: 'Coco coco coco coco'
}]
}, {
name: 'Four'
}]
}, {
name: 'Rap',
children: [{
name: 'Hip-Hop/Rap'
}]
}]
};
var svg = d3.select('body').append('svg');
svg.attr('width', 700)
.attr('height', 400);
var tree = d3.layout.tree().size([600, 300]);
function update(model) {
var nodes = tree.nodes(model);
var links = tree.links(nodes);
nodes.forEach(function(d, i) {
d.index = d.parent ? d.parent.children.indexOf(d) : 0;
d.width = getNameLength(d.name);
if (!hasNephewOrChildren(d)) {
d.x = getHorizontalPosition(d)
d.y = (d.parent ? d.parent.y : 0) + 40;
d.mode = 'horizontal';
} else {
d.x = d.depth * 60;
d.y = getVerticalPosition(d);
d.mode = 'vertical';
}
});
var node = svg.selectAll('.node')
.data(nodes)
.enter()
.append('g').attr('class', 'node')
.attr('opacity', 1)
.attr('visibility', function(d) {
return d.depth ? 'visible' : 'hidden'
})
.attr('transform', function(d, i) {
return 'translate(' + d.x + ',' + d.y + ')'
});
var lineFunction = d3.svg.line()
.x(function(d) {
return d.x;
})
.y(function(d) {
return d.y;
})
.interpolate("linear");
var paths = svg.selectAll('g.node').append("path")
.attr("d", function(d) {
return lineFunction(generatePath(d));
})
.attr("stroke", "#aaa")
.attr("stroke-width", 1)
.attr("fill", "none");
function generatePath(d) {
var points = [];
if (d.depth > 1) {
if (d.mode === 'horizontal') {
points.push({
x: d.parent.x - d.x + d.parent.width,
y: -25
});
points.push({
x: d.width / 2,
y: -25
});
points.push({
x: d.width / 2,
y: 0
});
} else {
points.push({
x: d.parent.x - d.x + d.parent.width / 2,
y: d.parent.y - d.y + 30
});
points.push({
x: d.parent.x - d.x + d.parent.width / 2,
y: 15
});
points.push({
x: d.parent.x - d.x + d.parent.width / 2 + 15,
y: 15
});
}
}
return points;
}
node.append('rect')
.attr('class', 'rect')
.attr('width', function(d, i) {
return d.width
})
.attr('height', 30)
.attr('rx', 15)
node.append('text')
.text(function(d) {
return d.name
})
.attr('x', 10)
.attr('y', 20);
var close = node.append('g')
.attr('class', 'remove-icon-group')
.on('click', function(d) {
console.log('todo remove d and all childrens.');
// update(model);
})
.attr('transform', function(d, i) {
return 'translate(' + (d.width - 15) + ',15)'
});
close.append('circle')
.attr('class', 'remove-icon')
.attr('r', 10)
close.append('line')
.attr('x1', -4)
.attr('x2', 4)
.attr('y1', -4)
.attr('y2', 4)
.attr('stroke', '#a0a0a0')
.attr('stroke-width', 1);
close.append('line')
.attr('x1', 4)
.attr('x2', -4)
.attr('y1', -4)
.attr('y2', 4)
.attr('stroke', '#a0a0a0')
.attr('stroke-width', 1);
}
update(data);
function getLastDescendant(d) {
if (d.children && d.children.length) {
return getLastDescendant(d.children[d.children.length - 1]);
}
return d;
}
function hasNephewOrChildren(d) {
var siblings = d.parent ? d.parent.children : [d];
var hasChildren = false;
siblings.forEach(function(sibling) {
if (sibling.children && sibling.children.length) {
hasChildren = true;
}
});
return hasChildren;
}
function getHorizontalPosition(d) {
if (d.index === 0) {
return d.parent ? d.parent.x + 60 : 0;
}
var prevSibling = d.parent.children[d.index - 1];
return prevSibling.x + prevSibling.width + 10;
}
function getVerticalPosition(d) {
var prevY = (d.parent ? d.parent.y : -40);
if (d.index) {
var prevSibling = d.parent.children[d.index - 1];
var lastDescendant = getLastDescendant(prevSibling);
prevY = lastDescendant.y;
}
return prevY + 40;
}
function getNameLength(str) {
var length = str.length * 8;
return length < 60 ? 60 + 30 : length + 30;
}

You're very close. You already have all the drawing code extracted to update, and there's a place where you've commented out that you need to call it again. You need to figure out how to modify the model in response to user clicks, and then call update with the new model.
The thing you'll encounter is that when you call update again, some DOM nodes will already be onscreen. That is, the enter selection will be empty, but the update selection will not be. The simplest, and ugliest, way to handle this is to remove and re-add all the nodes:
svg.selectAll('.node').remove();
svg.selectAll('.node')
.data(nodes)
.enter()
.append("g") // and so on
The better way to do it is explained in the General Update Pattern (be sure to see all three). You should also read the last paragraph of the .enter() docs.

Transition not working

My goal is that given a value in seconds(resp_time), I want to create a counter in anticlock direction that would end once resp_time becomes 0.
I am following this tutorial: http://bl.ocks.org/mbostock/1096355 to create a polar clock. But I need the arc to decrease as in go anti-clockwise. I tried updating the endAngle value for the same, but it doesn't seem to work.
Here's my code:
var width = 960,
height = 800,
radius = Math.min(width, height) / 1.9,
spacing = .09;
var resp_time = 61;
var rh = parseInt(resp_time/3600), rm = parseInt((resp_time- rh*3600)/60), rs = parseInt((resp_time- rh*3600 - rm*60)%60);
var color = d3.scale.linear()
.range(["hsl(-180,50%,50%)", "hsl(180,50%,50%)"])
.interpolate(interpolateHsl);
var t;
var arc = d3.svg.arc()
.startAngle(0)
.endAngle(function(d) { return d.value * 2 * Math.PI; })
.innerRadius(function(d) { return d.index * radius; })
.outerRadius(function(d) { return (d.index + spacing) * radius; });
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var field = svg.selectAll("g")
.data(fields)
.enter().append("g");
field.append("path");
field.append("text");
d3.transition().duration(0).each(tick);
d3.select(self.frameElement).style("height", height + "px");
function tick() {
field = field
.each(function(d) { this._value = d.value; })
.data(fields)
.each(function(d) { d.previousValue = this._value; });
field.select("path")
.transition()
.ease("elastic")
.attrTween("d", arcTween)
.style("fill", function(d) { return color(d.value); });
field.select("text")
.attr("dy", function(d) { return d.value < .5 ? "-.5em" : "1em"; })
.text(function(d) { return d.text; })
.transition()
.ease("elastic")
.attr("transform", function(d) {
return "rotate(" + 360 * d.value + ")"
+ "translate(0," + -(d.index + spacing / 2) * radius + ")"
+ "rotate(" + (d.value < .5 ? -90 : 90) + ")"
});
if (resp_time > 0)
{
resp_time = resp_time - 1;
rh = parseInt(resp_time/3600), rm = parseInt((resp_time- rh*3600)/60), rs = parseInt((resp_time- rh*3600 - rm*60)%60);
t = setTimeout(tick, 1000);
}
}
function arcTween(d) {
console.log(d);
var i = d3.interpolateNumber(d.previousValue, d.value);
return function(t) { d.value = i(t); return arc(d); };
}
function fields() {
console.log(rs);
return [
{index: .3, text: rs+"s", value: rs},
{index: .2, text: rm+"m", value: rm},
{index: .1, text: rh+"h", value: rh}
];
}
function interpolateHsl(a, b) {
var i = d3.interpolateString(a, b);
return function(t) {
return d3.hsl(i(t));
};
}
This is just resulting in 3 static concentric circles(since I'm plotting only the minute, seconds and hours) with no transition.
I'm not sure how to proceed from here. What change should I make to get it working? Please help me out.

d.value in this code should be in the range [0, 1], so you need to divide by the maximum values in the fields generator:
function fields() {
console.log(rs);
return [
{index: .3, text: rs+"s", value: rs/60},
{index: .2, text: rm+"m", value: rm/60},
{index: .1, text: rh+"h", value: rh/24}
];
}
I noticed this because console.log(rs) was printing out values in the range of [0, 60] whereas arc.endAngle expects a radian value. If you substitute [0, 60] with the endAngle provider in the code, you get an over wound clock hand.
var arc = d3.svg.arc()
.startAngle(0)
.endAngle(function(d) { return d.value * 2 * Math.PI; })
var width = 960,
height = 800,
radius = Math.min(width, height) / 1.9,
spacing = .09;
var resp_time = 61;
var rh = parseInt(resp_time/3600), rm = parseInt((resp_time- rh*3600)/60), rs = parseInt((resp_time- rh*3600 - rm*60)%60);
var color = d3.scale.linear()
.range(["hsl(-180,50%,50%)", "hsl(180,50%,50%)"])
.interpolate(interpolateHsl);
var t;
var arc = d3.svg.arc()
.startAngle(0)
.endAngle(function(d) { return d.value * 2 * Math.PI; })
.innerRadius(function(d) { return d.index * radius; })
.outerRadius(function(d) { return (d.index + spacing) * radius; });
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var field = svg.selectAll("g")
.data(fields)
.enter().append("g");
field.append("path");
field.append("text");
d3.transition().duration(0).each(tick);
d3.select(self.frameElement).style("height", height + "px");
function tick() {
field = field
.each(function(d) { this._value = d.value; })
.data(fields)
.each(function(d) { d.previousValue = this._value; });
field.select("path")
.transition()
.ease("elastic")
.attrTween("d", arcTween)
.style("fill", function(d) { return color(d.value); });
field.select("text")
.attr("dy", function(d) { return d.value < .5 ? "-.5em" : "1em"; })
.text(function(d) { return d.text; })
.transition()
.ease("elastic")
.attr("transform", function(d) {
return "rotate(" + 360 * d.value + ")"
+ "translate(0," + -(d.index + spacing / 2) * radius + ")"
+ "rotate(" + (d.value < .5 ? -90 : 90) + ")"
});
if (resp_time > 0)
{
resp_time = resp_time - 1;
rh = parseInt(resp_time/3600), rm = parseInt((resp_time- rh*3600)/60), rs = parseInt((resp_time- rh*3600 - rm*60)%60);
t = setTimeout(tick, 1000);
}
}
function arcTween(d) {
console.log(d);
var i = d3.interpolateNumber(d.previousValue, d.value);
return function(t) { d.value = i(t); return arc(d); };
}
function fields() {
console.log(rs);
return [
{index: .3, text: rs+"s", value: rs/60},
{index: .2, text: rm+"m", value: rm/60},
{index: .1, text: rh+"h", value: rh/24}
];
}
function interpolateHsl(a, b) {
var i = d3.interpolateString(a, b);
return function(t) {
return d3.hsl(i(t));
};
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>

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