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@ralexrdz
Created October 1, 2019 01:33
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Collapsible Tree Example</title>
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text { font: 12px sans-serif; }
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
</style>
</head>
<body>
<!-- load the d3.js library -->
<script src="http://d3js.org/d3.v4.min.js"></script>
<script>
var pubs = {
name: "Tracker Project",
children: [{
name: "Bioregions"
},
{
name: "Water",
children: [
{
name: "Water in agriculture",
children: [{
name: "Systems for Watering",
children: [{
name: "Drip systems"
},
{
name: "Inundation"
},
{
name: "Sprinklers"
},
{
name: "Gravity"
},
{
name: "Test"
}
]
},
{
name: "Microbes"
},
{
name: "Drought remediation",
children: [{
name: "Reservoirs"
}]
},
{
name: "Water tables"
},
{
name: "Structured water"
},
{
name: "Drought"
},
{
name: "Transport"
},
{
name: "Water harvesting"
},
{
name: "Flood"
},
{
name: "Toilets"
},
{
name: "Hygiene"
},
{
name: "Potable"
},
{
name: "Cleaning"
},
{
name: "Pollution"
}
]
},
{
name: "Seas",
children: [{
name: "Nuclear radiation"
},
{
name: "Plastic contamination"
},
{
name: "Sea life",
children: [{
name: "Fishing"
},
{
name: "Species dieoff"
},
]
},
{
name: "Oil contamination"
},
{
name: "Acidification"
},
{
name: "Glacier melt",
children: [{
name: "Methane release"
},
{
name: "Rising sea levels"
}
]
}
]
},
{
name: "Lakes",
children: [{
name: "Pollution"
},
{
name: "Water levels"
},
{
name: "Underwater life"
}
]
},
{
name: "Rivers",
children: [{
name: "Dams",
children: [{
name: "Ecosystem destruction"
}]
},
{
name: "Contamination"
},
{
name: "Life in river"
},
]
},
{
name: "Pollution",
children: [
{
name: "Untreated sewage"
},
{
name: "Fertilizer"
},
{
name: "Pesticides"
},
{
name: "Animal waste"
},
{
name: "Salts from evaporated irrigation water"
},
{
name: "Silt from deforestation"
},
{
name: "Agricultural runoff"
},
{
name: "Industry",
children: [{
name: "Toxic chemicals and heavy metals"
},
{
name: "Power plant emissions",
children: [{
name: "Acid rain"
}]
}
]
}
]
},
{
name: "Water Problems",
children: [{
name: "Shortages of water",
children: [{
name: "Drought"
}]
},
{
name: "Shortages of clean water",
children: [{
name: "Growing populations "
},
{
name: "Expanding agriculture "
},
{
name: "Industrialization "
},
{
name: "High living standards "
}
]
}
]
},
{
name: "Wetlands"
},
{
name: "Groundwater",
children: [{
name: "Megacities"
},
{
name: "Agriculture"
},
{
name: "Fertilizer runoff"
},
{
name: "Pollution",
children: [{
name: "Water quality"
},
{
name: "Health"
}
]
}
]
},
{
name: "Water Disputes"
},
{
name: "Water Wastes",
children: [{
name: "Bad drainage"
},
{
name: "Leaking pipes"
},
{
name: "Evaporation from reservoirs and canals"
},
{
name: "Poor irrigation"
},
{
name: "Industrial practices"
},
{
name: "Drinking water treatment"
}
]
},
{
name: "Plastic bottles and Distribution"
},
{
name: "Water Shortages",
children: [
{
name: "Water tables declining"
},
{
name: "Drilling"
},
{
name: "Well building"
},
{
name: "Rich countries",
children: [{
name: "Building dams"
},
{
name: "Importing food"
},
{
name: "Tapping deep water aquifers"
},
{
name: "Recycling wastewater"
},
{
name: "Desalinated seawater"
},
{
name: "Overpopulation"
}
]
}
]
},
{
name: "Solutions",
children: [{
name: "Ultraviolet radiation"
},
{
name: "Filtering through cloth"
},
{
name: "Reusing and recycling water"
}
]
},
{
name: "Water Conservation",
children: [{
name: "Transporting and storing rain water"
},
{
name: "Catchments"
},
{
name: "Gutters and other channels"
},
{
name: "Storage tanks"
},
{
name: "Gravity or pump driven delivery system"
}
]
},
{
name: "Water Extracting Methods"
}
]
},
{
name: "Air"
},
{
name: "Earth (soil)"
},
{
name: "Government Projects"
},
{
name: "City Projects"
},
{
name: "Food"
},
{
name: "Agriculture"
},
{
name: "Environmental Technologies"
},
{
name: "Construction"
},
{
name: "Sustainability Communities"
},
{
name: "Transportation"
},
{
name: "Energy"
},
{
name: "Problem & Solutions"
},
{
name: "Indigenous"
},
{
name: "Legal"
},
{
name: "Waste"
},
{
name: "Economy"
},
{
name: "Land Use"
},
{
name: "Species Dieoff"
}
]
}
// Set the dimensions and margins of the diagram
var margin = {top: 20, right: 90, bottom: 30, left: 90},
width = 960 - margin.left - margin.right,
height = 800 - margin.top - margin.bottom;
// append the svg object to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
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 + ")");
var i = 0,
duration = 750,
root;
// declares a tree layout and assigns the size
var treemap = d3.tree().size([height, width]);
// Assigns parent, children, height, depth
root = d3.hierarchy(pubs, function(d) { return d.children; });
root.x0 = height / 2;
root.y0 = 0;
// Collapse after the second level
root.children.forEach(collapse);
update(root);
// Collapse the node and all it's children
function collapse(d) {
if(d.children) {
d._children = d.children
d._children.forEach(collapse)
d.children = null
}
}
function update(source) {
// Assigns the x and y position for the nodes
var treeData = treemap(root);
// Compute the new tree layout.
var nodes = treeData.descendants(),
links = treeData.descendants().slice(1);
// Normalize for fixed-depth.
nodes.forEach(function(d){ d.y = d.depth * 180});
// ****************** Nodes section ***************************
// Update the nodes...
var node = svg.selectAll('g.node')
.data(nodes, function(d) {return d.id || (d.id = ++i); });
// Enter any new modes 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);
// Add Circle for the nodes
nodeEnter.append('circle')
.attr('class', 'node')
.attr('r', 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
// Add labels for the nodes
nodeEnter.append('text')
.attr("dy", ".35em")
.attr("x", function(d) {
return d.children || d._children ? -13 : 13;
})
.attr("text-anchor", function(d) {
return d.children || d._children ? "end" : "start";
})
.text(function(d) { return d.data.name; });
// UPDATE
var nodeUpdate = nodeEnter.merge(node);
// Transition to the proper position for the node
nodeUpdate.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
// Update the node attributes and style
nodeUpdate.select('circle.node')
.attr('r', 10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
})
.attr('cursor', 'pointer');
// Remove any exiting nodes
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
// On exit reduce the node circles size to 0
nodeExit.select('circle')
.attr('r', 1e-6);
// On exit reduce the opacity of text labels
nodeExit.select('text')
.style('fill-opacity', 1e-6);
// ****************** links section ***************************
// Update the links...
var link = svg.selectAll('path.link')
.data(links, function(d) { return d.id; });
// Enter any new links at the parent's previous position.
var linkEnter = link.enter().insert('path', "g")
.attr("class", "link")
.attr('d', function(d){
var o = {x: source.x0, y: source.y0}
return diagonal(o, o)
});
// UPDATE
var linkUpdate = linkEnter.merge(link);
// Transition back to the parent element position
linkUpdate.transition()
.duration(duration)
.attr('d', function(d){ return diagonal(d, d.parent) });
// Remove any exiting links
var linkExit = link.exit().transition()
.duration(duration)
.attr('d', function(d) {
var o = {x: source.x, y: source.y}
return diagonal(o, o)
})
.remove();
// Store the old positions for transition.
nodes.forEach(function(d){
d.x0 = d.x;
d.y0 = d.y;
});
// Creates a curved (diagonal) path from parent to the child nodes
function diagonal(s, d) {
path = `M ${s.y} ${s.x}
C ${(s.y + d.y) / 2} ${s.x},
${(s.y + d.y) / 2} ${d.x},
${d.y} ${d.x}`
return path
}
// 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);
}
}
</script>
</body>
</html>
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