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circularpacking.html
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<!DOCTYPE html>
<html lang="en">
<head>
<!-- Global site tag (gtag.js) - Google Analytics -->
<!-- Allow Ezoic to place ads on the page -->
<script type="text/javascript">
var ezstandalone = ezstandalone || {};
ezstandalone.cmd = ezstandalone.cmd || [];
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<meta charset="utf-8">
<title>Circular Packing | the D3 Graph Gallery</title>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="Circular packing with Javascript and D3.js: from the most basic example to highly customized examples.">
<meta name="keywords" content="Data,Dataviz,Datavisualization,Javascript,D3,D3.js,pie chart">
<meta name="author" content="Yan Holtz">
<link rel="icon" href="img/logo/D3_single_small.png">
<meta property="og:title" content="Circular Packing | the D3 Graph Gallery">
<meta property="og:image" content="img/overview_RGG.png">
<meta property="og:description" content="Circular packing with Javascript and D3.js: from the most basic example to highly customized examples.">
<!-- Bootstrap core CSS -->
<link href="vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">
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<script src="https://d3js.org/d3.v4.js"></script>
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<!-- Header -->
<header class="masthead" style="padding-top: 150px; padding-bottom: 80px">
<div class="textlanding">
<h1>Circular Packing</h1>
<hr class="short_hr">
<br>
<ul class="list-inline social-buttons">
<li class="list-inline-item">
<a href="https://twitter.com/R_Graph_Gallery">
<i class="fa fa-twitter"></i>
</a>
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<a href="https://github.com/holtzy">
<i class="fa fa-github" style="color: white"></i>
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<a href="https://www.linkedin.com/in/yan-holtz-2477534a/">
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<a href="https://www.yan-holtz.com">
<i class="fa fa-home"></i>
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</ul>
<br><br>
<p style="max-width: 700px; margin: auto"><a href="https://www.data-to-viz.com/graph/circularpacking.html">Circular packing</a> or <a href="https://www.data-to-viz.com/graph/circularpacking.html">circular treemap</a> allows to visualize a <u>hierarchic organization</u>. It is an equivalent of a <a href="treemap.html">treemap</a> or a <a href="dendrogram.html">dendrogram</a>, where each node of the tree is represented as a circle and its sub-nodes are represented as circles inside of it.</p>
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<div class="mySeryTitle">Step by step</div>
<hr>
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<div class="col-md-4 col-sm-6 portfolio-item">
<a class="portfolio-link" href="graph/circularpacking_basic.html">
<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Most basic circular packing</p>
<hr>
<p class="explanation_portfolio">Most basic examples: just applying a few forces on 8 nodes</p>
</div>
</div>
<img class="img-fluid" src="img/graph/circularpacking_basic.gif" alt="">
</a>
</div>
<div class="col-md-4 col-sm-6 portfolio-item">
<a class="portfolio-link" href="graph/circularpacking_drag.html">
<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Add dragging feature</p>
<hr>
<p class="explanation_portfolio">Dragging allows you to interactively modify a node position, updating other nodes automatically.</p>
</div>
</div>
<img class="img-fluid" src="img/graph/circularpacking_drag.gif" alt="">
</a>
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<p>Add group features</p>
<hr>
<p class="explanation_portfolio">How to use group information on circular packing: change color, attract to specific position...</p>
</div>
</div>
<img class="img-fluid" src="img/graph/circularpacking_group.png" alt="">
</a>
</div>
</div>
<br><br><br><br>
<div class="mySeryTitle">Template</div>
<hr>
<p>Here is the <a href="graph/circularpacking_template.html">template</a> I start with when needing to build a circular packing with <u>one level of hierarchy</u>. Input data is a <u><code>.csv</code> file</u> giving features for each node. Circle <u>size</u> an <u>color</u> depends on these features. You can <u>drag circles</u> to reorganize, and <u>hover</u> them for more information.</p>
<a class="btn btn-secondary btn-md text-uppercase" target="_blank" href="graph/circularpacking_template.html">See code</a>
<center><div id="my_dataviz"></div></center>
<br><br><br><br>
<div class="mySeryTitle">Selection of blocks</div>
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<p>A selection of examples showing the application of the basic concept to real life dataset.</p>
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<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Circular packing with one level of hierarchy</p>
<hr>
<p class="explanation_portfolio">An example showing one bubble by country in a clean layout.</p>
</div>
</div>
<img class="img-fluid showBlock" src="img/block/block_circularpack1level.png" alt="network graph les miserables">
</a>
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<a class="portfolio-link" href="https://d3indepth.com/force-layout/">
<div class="portfolio-hover">
<div class="portfolio-hover-content">
<p>Overview of force layout</p>
<hr>
<p class="explanation_portfolio">A cool post by d3 in depth I highly recommend to get introduced to forces</p>
</div>
</div>
<img class="img-fluid showBlock" src="img/block/block_circularpackD3indepth.png" alt="network graph les miserables">
</a>
</div>
</div>
</div>
</section>
<!-- ======================================================================= -->
<!-- ============================ CIRCULAR PACKING CHART ============================ -->
<style>
.node:hover{
stroke-width: 7px !important;
opacity: 1 !important;
}
</style>
<script>
// set the dimensions and margins of the graph
var width = 860
var height = 460
// append the svg object to the body of the page
var svg = d3.select("#my_dataviz")
.append("svg")
.attr("width", width)
.attr("height", height)
// Read data
d3.csv("https://raw.githubusercontent.com/holtzy/data_to_viz/master/Example_dataset/11_SevCatOneNumNestedOneObsPerGroup.csv", function(data) {
// Filter a bit the data
data = data.filter(function(d){ return d.value>10000000 })
// Color palette for continents?
var color = d3.scaleOrdinal()
.domain(["Asia", "Europe", "Africa", "Oceania", "Americas"])
.range(d3.schemeSet1);
// Color palette for continents?
var size = d3.scaleLinear()
.domain([0, 1400000000])
.range([9,70])
// create a tooltip
var Tooltip = d3.select("#my_dataviz")
.append("div")
.style("opacity", 0)
.attr("class", "tooltip")
.style("background-color", "white")
.style("border", "solid")
.style("border-width", "2px")
.style("border-radius", "5px")
.style("padding", "5px")
// Three function that change the tooltip when user hover / move / leave a cell
var mouseover = function(d) {
Tooltip
.style("opacity", 1)
}
var mousemove = function(d) {
Tooltip
.html('<u>' + d.key + '</u>' + "<br>" + d.value + " inhabitants")
.style("left", (d3.event.pageX+20) + "px")
.style("top", (d3.event.pageY-30) + "px")
}
var mouseleave = function(d) {
Tooltip
.style("opacity", 0)
}
// Initialize the circle: all located at the center of the svg area
var node = svg.append("g")
.selectAll("circle")
.data(data)
.enter()
.append("circle")
.attr("class", "node")
.attr("r", function(d){ return size(d.value)})
.attr("cx", width / 2)
.attr("cy", height / 2)
.style("fill", function(d){ return color(d.region)})
.style("fill-opacity", 0.7)
.attr("stroke", "black")
.style("stroke-width", 1)
.on("mouseover", mouseover)
.on("mousemove", mousemove)
.on("mouseleave", mouseleave)
.call(d3.drag() // call specific function when circle is dragged
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
// Features of the forces applied to the nodes:
var simulation = d3.forceSimulation()
.force("y", d3.forceY().y(height / 2)) // Attraction to the center of the svg area
.force("center", d3.forceCenter().x(width / 2).y(height / 2)) // Attraction to the center of the svg area
.force("charge", d3.forceManyBody().strength(.1)) // Nodes are attracted one each other of value is > 0
.force("collide", d3.forceCollide().strength(.2).radius(function(d){ return (size(d.value)+3) }).iterations(1)) // Force that avoids circle overlapping
// Apply these forces to the nodes and update their positions.
// Once the force algorithm is happy with positions ('alpha' value is low enough), simulations will stop.
simulation
.nodes(data)
.on("tick", function(d){
node
.attr("cx", function(d){ return d.x; })
.attr("cy", function(d){ return d.y; })
});
// What happens when a circle is dragged?
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(.03).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(.03);
d.fx = null;
d.fy = null;
}
})
// Explanation
svg
.append("text")
.attr("text-anchor", "end")
.style("fill", "#B8B8B8")
.style("font-size", "14px")
.attr("x", width-30)
.attr("y", height-90)
.attr("width", 90)
.html("Distribution of the world population")
svg
.append("text")
.attr("text-anchor", "end")
.style("fill", "#B8B8B8")
.style("font-size", "14px")
.attr("x", width-30)
.attr("y", height-65)
.attr("width", 90)
.html("Hover and drag for more")
</script>
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<p class="mySeryTitle">Related chart types</p>
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<div class="captionPortfolio">Circular packing</div>
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