I am looking to create a Collapsible graph using d3js as this one http://bl.ocks.org/d3noob/8375092 but I would like to add many root points (Top Level_1 and Top Level_2 in the example below)
var treeData = [
{
"name": "Top Level_1",
"parent": "null",
"children": [
{
"name": "Level 2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A",
"parent": "Level 2: A"
},
{
"name": "Daughter of A",
"parent": "Level 2: A"
}
]
},
{
"name": "Level 2: B",
"parent": "Top Level"
}
],
"name": "Top Level_2",
"parent": "null",
"children": [
{
"name": "Level 2_2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A_2",
"parent": "Level 2_2: A"
},
{
"name": "Daughter of A_2",
"parent": "Level 2_2: A"
}
]
},
{
"name": "Level 2_2: B",
"parent": "Top Level_2"
}
]
}
];
This example does not work. How could it be possible to create many seperate collapsible trees in the same graph?
Hierarchical graphs can only have a single root; there have been requests for d3 to allow multiply-rooted trees, but so far all have been denied. To create a tree with multiple roots, then, we can either create two separate trees, or we can fake having two separate trees by hiding the root node.
Your data structure was invalid (it's a good idea to use a code formatter to standardise the indentation make sure that you don't make errors with complex data structures like this), so I added a root node and edited the existing nodes to correctly represent a hierarchical structure.
The simplest way to hide the root node is to use CSS. To do this, I gave each node, link, and text item a class, level-n, based on its depth in the tree (e.g. level-0, level-1, etc.). Hiding the root and the links from the root is then a matter of setting the elements with class level-0 to have opacity: 0.
Using the code from the d3noob collapsible tree, we can find the relevant parts of the update function code and add in the new css class:
// add the class to the whole `g` element
var nodeEnter = node.enter().append("g")
.attr("class", function(d){
return 'node level-'+d.depth; // add the node depth
})
.attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
.on("click", click);
Do the same with the links:
// each link has two nodes, the source and the target; we want to
// label our links with the source node (the parent node)
link.enter().insert("path", "g")
.attr("class", function(d){
return 'link level-' + d.source.depth})
.attr("d", function(d) {
var o = {x: source.x0, y: source.y0};
return diagonal({source: o, target: o});
});
And in the page CSS, set the css class level-0 to have opacity 0:
.level-0 {
opacity: 0;
}
Since we now have an empty space on the left where the missing node was, the whole chart can be shifted over to the left. You may want to alter the tree dimensions accordingly.
The code now looks like this:
var treeData = [{
name: "null",
children: [{
"name": "Top Level_1",
"parent": "null",
"children": [{
"name": "Level 2: A",
"parent": "Top Level_1",
"children": [{
"name": "Son of A",
"parent": "Level 2: A"
}, {
"name": "Daughter of A",
"parent": "Level 2: A"
}]
},
{
"name": "Level 2: B",
"parent": "Top Level"
}],
}, {
"name": "Top Level_2",
"parent": "null",
"children": [
{
"name": "Level 2_2: A",
"parent": "Top Level_2",
"children": [
{
"name": "Son of A_2",
"parent": "Level 2_2: A"
},
{
"name": "Daughter of A_2",
"parent": "Level 2_2: A"
}]
},
{
"name": "Level 2_2: B",
"parent": "Top Level_2"
}]
}]
}];
// ************** Generate the tree diagram *****************
var margin = {
top: 20,
right: 120,
bottom: 20,
left: 120
},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) {
return [d.y, d.x];
});
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 - 120) + "," + margin.top + ")");
root = treeData[0];
root.x0 = height / 2;
root.y0 = 0;
update(root);
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) {
d.y = d.depth * 120;
});
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) {
return d.id || (d.id = ++i);
});
// Enter any new nodes at the parent's previous position.
var nodeEnter = node.enter().append("g")
.attr("class", function(d) {
return 'node level-' + d.depth;
})
.attr("transform", function(d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
})
.on("click", click);
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeEnter.append("text")
.attr('class', function(d) {
return 'node-text level-' + d.level
})
.attr("x", function(d) {
return d.children || d._children ? -13 : 13;
})
.attr("dy", ".35em")
.attr("text-anchor", function(d) {
return d.children || d._children ? "end" : "start";
})
.text(function(d) {
return d.name;
})
.style("fill-opacity", 1e-6);
// Transition nodes to their new position.
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + d.y + "," + d.x + ")";
});
nodeUpdate.select("circle")
.attr("r", 10)
.style("fill", function(d) {
return d._children ? "lightsteelblue" : "#fff";
});
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) {
return "translate(" + source.y + "," + source.x + ")";
})
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function(d) {
return d.target.id;
});
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", function(d) {
return 'link level-' + d.source.depth
})
.attr("d", function(d) {
var o = {
x: source.x0,
y: source.y0
};
return diagonal({
source: o,
target: o
});
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit().transition()
.duration(duration)
.attr("d", function(d) {
var o = {
x: source.x,
y: source.y
};
return diagonal({
source: o,
target: o
});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// 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);
}
View on bl.ocks.org
You can use Google Org Chart which permits multiple roots
hereafter a multiple root Chart
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load('current', {packages:["orgchart"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Name');
data.addColumn('string', 'Manager');
// For each orgchart box, provide the name, manager, and tooltip to show.
data.addRows([
['Bob',''],
['Sarah','Bob'],
['Léa',''],
['Bob','Sandra'],
['Sandra','Alex'],
['Chris','David'],
['David',''],
['Jeanette','David']
]);
// Create the chart.
var chart = new google.visualization.OrgChart(document.getElementById('chart_div'));
// Draw the chart, setting the allowHtml option to true for the tooltips.
chart.draw(data, {'allowHtml':true});
}
</script>
</head>
<body>
<div id="chart_div"></div>
</body>
</html>
Related
A follow-on question / issue to
Programmatically open nested, collapsed (hidden) node in d3.js v4
updated for d3.js v6. The issue is the loading of external JSON data in the d3 collapsible menu visualization, and the programmatic access of nested (collapsed, hidden) nodes.
It appears that "treeData", which is the loaded Object, is not being delivered.
Uncaught ReferenceError: treeData is not defined
JSFiddle: https://jsfiddle.net/vstuart/kant09hm/6/
JSFiddle (updated with answer): https://jsfiddle.net/vstuart/kant09hm/9/
ontology_for_d3_test.json
gist: https://gist.github.com/victoriastuart/abbcf355bf1590be02f6dec297be2706
{ "name": "Root",
"children": [
{ "name": "Culture",
"children": [
{ "name": "Entertainment" },
{ "name": "LGBT" }
]
},
{ "name": "Nature",
"id": "nature",
"children": [
{ "name": "Earth",
"id": "earth",
"children": [
{ "name": "Environment" },
{ "name": "Geography" },
{ "name": "Geology" },
{ "name": "Geopolitical" },
{ "name": "Geopolitical - Countries" },
{ "name": "Geopolitical - Countries - Canada" },
{ "name": "Geopolitical - Countries - United States" },
{ "name": "Nature" },
{ "name": "Regions" }
]
},
{ "name": "Cosmos" },
{ "name": "Outer space" }
]
},
{ "name": "Humanities",
"children": [
{ "name": "History" },
{ "name": "Philosophy" },
{ "name": "Philosophy - Theology" }
]
},
{ "name": "Miscellaneous",
"children": [
{ "name": "Wikipedia",
"url": "https://wikipedia.com" },
{ "name": "Example.com",
"url": "https://example.com" }
]
},
{ "name": "Science",
"children": [
{ "name": "Biology" },
{ "name": "Health" },
{ "name": "Health - Medicine" },
{ "name": "Sociology" }
]
},
{ "name": "Technology",
"children": [
{ "name": "Computers" },
{ "name": "Computers - Hardware" },
{ "name": "Computers - Software" },
{ "name": "Computing" },
{ "name": "Computing - Programming" },
{ "name": "Internet" },
{ "name": "Space" },
{ "name": "Transportation" }
]
},
{ "name": "Society",
"children": [
{ "name": "Business" },
{ "name": "Economics" },
{ "name": "Economics - Business" },
{ "name": "Economics - Capitalism" },
{ "name": "Economics - Commerce" },
{ "name": "Economics - Finance" },
{ "name": "Politics" },
{ "name": "Public services" }
]
}
]
}
index.html [standalone working copy of JSFiddle; edit: updated with answer]
<!DOCTYPE html>
<html lang="en-US" xmlns:xlink="http://www.w3.org/1999/xlink">
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<style>
.node {
cursor: pointer;
}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
.node text {
font: 12px sans-serif;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 2px;
}
#includedContent {
position: static !important;
display: inline-block;
}
#d3_object {
width: 75%;
margin: 0.5rem 0.5rem 1rem 0.25rem;
}
</style>
<script type="text/javascript" src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
<!-- <script src="https://d3js.org/d3.v4.min.js"></script> -->
<!-- <script src="https://d3js.org/d3.v5.min.js"></script> -->
<script src="https://d3js.org/d3.v6.min.js"></script>
</head>
<body>
<div id="d3_object">
<object>
<p>apple</p>
<div id="includedContent"></div>
<p>banana</p>
</object>
</div>
<script type="text/javascript">
// 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 = 500 - margin.top - margin.bottom;
// ----------------------------------------
// PAN, ZOOM:
// https://www.d3-graph-gallery.com/graph/interactivity_zoom.html
// var svg = d3.select("body").append("svg")
var svg = d3.select("#includedContent").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
// d3.js v4, v5:
// .call(d3.zoom().on("zoom", function () {
// svg.attr("transform", d3.event.transform)
// d3.js v6:
.call(d3.zoom().on("zoom", function (event) {
svg.attr("transform", event.transform)
}))
.append("g")
.attr("transform", "translate("
+ margin.left + "," + margin.top + ")");
// ----------------------------------------
var i = 0,
duration = 250,
root;
// declares a tree layout and assigns the size
var treemap = d3.tree().size([height, width]);
// ----------------------------------------
// LOAD THE EXTERNAL DATA:
//d3.json("https://gist.githubusercontent.com/mbostock/4339083/raw/9585d220bef18a0925922f4d384265ef767566f5/flare.json", function(error, treeData) {
// ----------------------------------------
// d3.js v4 [ https://d3js.org/d3.v4.min.js ]
/*
d3.json("https://gist.githubusercontent.com/victoriastuart/abbcf355bf1590be02f6dec297be2706/raw/2418e5f6b7626b3c5842665a51b7d0d27f74e909/ontology_for_d3_test.json", function(error, treeData) {
if (error) throw error;
// Assigns parent, children, height, depth
root = d3.hierarchy(treeData, function(d) { return d.children; });
root.x0 = height / 2;
root.y0 = 0;
// Collapse after the second level
root.children.forEach(collapse);
update(root);
});
*/
// ----------------------------------------
// ----------------------------------------
// d3.js v5 https://d3js.org/d3.v5.min.js
// https://gist.github.com/d3noob/1a96af738c89b88723eb63456beb6510
// d3.js v6 https://d3js.org/d3.v5.min.js
// https://gist.github.com/d3noob/9de0768412ac2ce5dbec430bb1370efe
// https://stackoverflow.com/questions/49768165/code-within-d3-json-callback-is-not-executed
// https://www.tutorialsteacher.com/d3js/loading-data-from-file-in-d3js
// https://stackoverflow.com/questions/47664292/d3-json-method-doesnt-return-my-data-array
// ----------------------------------------
// LOAD EXTERNAL JSON DATA FILE (via PROMISE):
// https://stackoverflow.com/questions/49768165/code-within-d3-json-callback-is-not-executed
// https://stackoverflow.com/questions/49534470/d3-js-v5-promise-all-replaced-d3-queue
// https://www.roelpeters.be/explaining-promises-in-d3-js-the-what-and-the-why/
//
// https://stackoverflow.com/questions/14220321/how-do-i-return-the-response-from-an-asynchronous-call
// This callback function should return the "treeData" Object:
d3.json("https://gist.githubusercontent.com/victoriastuart/abbcf355bf1590be02f6dec297be2706/raw/2418e5f6b7626b3c5842665a51b7d0d27f74e909/ontology_for_d3_test.json")
.then(function(treeData) {
console.log('[d3.js] treeData:', treeData, '| type:', typeof(treeData), '| length:', treeData['children'].length)
for (let i = 0; i < treeData['children'].length; i++) {
console.log('node:', treeData['children'][i].name);
if ( treeData['children'][i].id !== undefined ) {
console.log(' id:', treeData['children'][i].id);
}
}
// ASSIGN PARENT, CHILDREN, HEIGHT, DEPTH:
root = d3.hierarchy(treeData, function(d) { return d.children; });
root.x0 = height / 2;
root.y0 = 0;
// COLLAPSE AFTER THE SECOND LEVEL:
root.children.forEach(collapse);
update(root);
// ----------------------------------------
// Per answers at
// https://stackoverflow.com/questions/67527258/programmatically-open-nested-collapsed-hidden-node-in-d3-js-v4/67530786?noredirect=1#comment119390942_67530786
// https://jsfiddle.net/mrovinsky/ujwsd7qz/
// https://stackoverflow.com/questions/67549992/accessing-promised-data-in-d3-js-v6-programmatically-opening-nested-collapsed-n
const findNodeAncestors = (root, name) => {
if (root.name === name) {
return [name];
}
if (root.children)
for (let i = 0; i < root.children.length; i++) {
const chain = findNodeAncestors(root.children[i], name);
if (chain) {
chain.push(root.name);
return chain;
}
}
return null;
};
const chain = findNodeAncestors(treeData, 'Earth');
if (chain) {
console.log('[d3.js] chain:', chain)
for (let i = chain.length - 1; i >= 0; i--) {
const node = d3.select(`.node[node-name="${chain[i]}"]`);
const nodeData = node.datum();
if (!nodeData.children && nodeData.data.children) {
node.node().dispatchEvent(new Event('click'));
}
}
}
else {
console.log('[d3.js] "chain" is either "null" or "undefined"')
}
// ----------------------------------------
})
// IF (ERROR) THROW ERROR:
.catch(function(error) {
console.log('[d3.js] JSON callback function error')
if (error) throw error;
});
// ----------------------------------------
// 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')
// --------------------------------------------
// Per answer at
// https://stackoverflow.com/questions/67480339/programmatically-opening-d3-js-v4-collapsible-tree-nodes
.attr('node-name', d => d.data.name)
// --------------------------------------------
.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;
});
// CREATE 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} ${d.x}`
return path
}
// ----------------------------------------
// TOGGLE CHILDREN ON CLICK:
// function click(d) {
// ***** New in d3.js v6: *****
function click(event, d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else if (d._children) {
d.children = d._children;
d._children = null;
} else {
// This was a leaf node, so redirect.
console.log('d:', d)
console.log('d.data:', d.data)
console.log('d.name:', d.name)
console.log('d.data.name:', d.data.name)
console.log('urlMap[d.data.name]:', urlMap[d.data.name])
window.location = d.data.url;
// window.open("https://www.example.com", "_self");
}
update(d);
}
// ----------------------------------------
}
// ----------------------------------------
// Per answer at
// https://stackoverflow.com/questions/67480339/programmatically-opening-d3-js-v4-collapsible-tree-nodes
///*
setTimeout(() => {
//const node = d3.select('.node[node-name="Earth"]').node();
//const node = d3.select('.node[node-name="Nature"]').node();
const node = d3.select('.node[node-name="Society"]').node();
console.log('[setTimeout()] NODE: ', node);
node.dispatchEvent(new Event('click'));
}, 2500);
//*/
// ----------------------------------------
// ----------------------------------------
// Per answer at
// https://stackoverflow.com/questions/67527258/programmatically-open-nested-collapsed-hidden-node-in-d3-js-v4/67530786?noredirect=1#comment119390942_67530786
// https://jsfiddle.net/mrovinsky/ujwsd7qz/
const findNodeAncestors = (root, name) => {
if (root.name === name) {
return [name];
}
if (root.children)
for (let i = 0; i < root.children.length; i++) {
const chain = findNodeAncestors(root.children[i], name);
if (chain) {
chain.push(root.name);
return chain;
}
}
return null;
};
const chain = findNodeAncestors(treeData, 'Earth');
// Console: "Uncaught ReferenceError: treeData is not defined"
for (let i = chain.length - 1; i >= 0; i--) {
const node = d3.select(`.node[node-name="${chain[i]}"]`);
const nodeData = node.datum();
if (!nodeData.children && nodeData.data.children) {
node.node().dispatchEvent(new Event('click'));
}
}
// ----------------------------------------
</script>
</body>
</html>
The treeData variable can be used only in the scope of the function where it's defined as an argument:
d3.json("https://...json")
.then(function(treeData) {
// Scope of the function, treeData can be used here
});
// Out of scope, treeData is not defined
The solution is to move the block that starts with const findNodeAncestors... (~25 lines) inside the function body (right after the last occurence of update with a closing brace):
update(d);
}
// ----------------------------------------
// HERE
}
How can I capture the click event for the last node?
I followed this tutorial(http://bl.ocks.org/ganeshv/6a8e9ada3ab7f2d88022) to make the tree map. In my purpose I want to make the last node clickable, then get the node data send it to server.
I used the developer tool to get the structure of tree map.
My code in the js file is that:
function display(d) {
lastGroupArray = [];
// collectLastGroup(d);
console.log(lastGroupArray);
grandparent
.datum(d.parent)
.on("click", transition)
.select("text")
.text(name(d));
var g1 = svg.insert("g", ".grandparent")
.datum(d)
.attr("class", "depth");
var g = g1.selectAll("g")
.data(d._children)
.enter().append("g");
g.filter(function (d) { return d._children; })
.classed("children", true)
.on("click", transition);
var children = g.selectAll(".child")
.data(function(d) { return d._children || [d]; })
.enter().append("g");
children.append("rect")
.attr("class", "child")
.call(rect)
.append("title")
.text(function(d) { return d.name + " (" + formatNumber(d.value) + ")"; });
//append child text
children.append("text")
.attr("class", "ctext")
.text(function(d) { return d.name; })
.call(text2);
//append parent text
g.append("rect")
.attr("class", "parent")
.call(rect);
var ccc = g.selectAll("rect").on("click", function (d){
if(typeof d.lastGroup !== 'undefined'){
d.lastGroup.forEach( function (dd) {
// lastGroupArray.push(new LastGroup(dd));
console.log(dd.filePath);
});
}
})
My function above only can capture the last node when it has a parent.
The function will not work if the node is the last child when the treemap is loaded.
The Payee is the last node when the treemap is loaded.
Here is my JSON data:
The payee is on the bottom, it only has one parent which is the root "digit-first2".
{
"children": [
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result1.csv",
"name": "0~2",
"value": 112
}],
"children": [
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result3.csv",
"name": "0~2",
"value": 218
}],
"children": [{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result7.csv",
"name": "0~2",
"value": 836
}],
"name": "Payee",
"value": 836
}],
"name": "Tran Type",
"value": 218
},
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result5.csv",
"name": "0~2",
"value": 834
}],
"name": "Payee",
"value": 834
}
],
"name": "[Code-Finger-Print, [Memo]]",
"value": 112
},
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result2.csv",
"name": "0~2",
"value": 138
}],
"children": [{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result6.csv",
"name": "0~2",
"value": 766
}],
"name": "Payee",
"value": 766
}],
"name": "Tran Type",
"value": 138
},
{
"lastGroup": [{
"filePath": "Jarfile/output/result/ResultFolder/digit-first2-2017-10-22T16-05-53/result4.csv",
"name": "0~2",
"value": 731
}],
"name": "Payee",
"value": 731
}
],
"name": "digit-first2"
}
My function above will only work when the root is not the parent of the last node.
My question is how can I capture the click event for the node if the root is this node`s parent.
You can achieve the last node click by changing the json structure. The last child should have one more children key with all the last child's properties copied in the children key with the same name .
For example if the last child is AgglomerativeCluster . Then the structure can be
children: [
{
name: "cluster",
children: [
{ name: "AgglomerativeCluster",
children: [{name: "AgglomerativeCluster",value: 3938,count:39}] },
{ name: "CommunityStructure", value: 3812 },
]
}
Find the full implementation here https://codesandbox.io/s/affectionate-thunder-l024x
There is simple example;
function display(d) {
grandparent
.datum(d.parent)
.on("click", transition)
.select("text")
.text(name(d));
var g1 = svg.insert("g", ".grandparent")
.datum(d)
.attr("class", "depth");
var g = g1.selectAll("g")
.data(d._children)
.enter().append("g");
g.filter(function (d) { return d._children; })
.classed("children", true)
.on("click", transition);
var children = g.selectAll(".child")
.data(function (d) { return d._children || [d]; })
.enter().append("g");
children.append("rect")
.attr("class", "child")
.call(rect)
.append("title")
.text(function (d) {
return d.key + " (" + formatNumber(d.value) + ")";
});
children.append("text")
.attr("class", "ctext")
.text(function (d) { return d.key; })
.call(text2);
g.append("rect")
.attr("class", "parent")
.call(rect);
var t = g.append("text")
.attr("class", "ptext")
.attr("dy", ".75em")
t.append("tspan")
.text(function (d) { return d.key; });
t.append("tspan")
.attr("dy", "1.0em")
.text(function (d) { return formatNumber(d.value); });
t.call(text);
var isDeph = false;
g.selectAll("rect")
.style("fill", function (d) {
if (d.values != null) {
isDeph = true;
}
return d.color;
})
.attr('onclick', function (d) {
if (!isDeph) {
return d.data
}
return ''
});
function transition(d) {
if (transitioning || !d)
return;
transitioning = true;
var g2 = display(d),
t1 = g1.transition().duration(750),
t2 = g2.transition().duration(750);
// Update the domain only after entering new elements.
x.domain([d.x, d.x + d.dx]);
y.domain([d.y, d.y + d.dy]);
// Enable anti-aliasing during the transition.
svg.style("shape-rendering", null);
// Draw child nodes on top of parent nodes.
svg.selectAll(".depth").sort(function (a, b) {
return a.depth - b.depth;
});
// Fade-in entering text.
g2.selectAll("text").style("fill-opacity", 0);
// Transition to the new view.
t1.selectAll(".ptext").call(text).style("fill-opacity", 0);
t1.selectAll(".ctext").call(text2).style("fill-opacity", 0);
t2.selectAll(".ptext").call(text).style("fill-opacity", 1);
t2.selectAll(".ctext").call(text2).style("fill-opacity", 1);
t1.selectAll("rect").call(rect);
t2.selectAll("rect").call(rect);
// Remove the old node when the transition is finished.
t1.remove().each("end", function () {
svg.style("shape-rendering", "crispEdges");
transitioning = false;
});
}
return g;
}
I am working with this code to get a radial tree diagram for my data. However, I'd like to modify it to avoid curved links. Instead I am interested in linear straight connections. The curved links make the illustration to be less sophisticated specially when we have lower number of children nodes. For instance, you may look at the parent node and its links with the nodes on the first layer (circle). How can I use straight lines for these connections?
This is the part of the code I would like to modify to satisfy my needs:
var link = g.selectAll(".link")
.data(root.links())
.enter().append("path")
.attr("class", "link")
.attr("d", d3.linkRadial()
.angle(function(d) { return d.x; })
.radius(function(d) { return d.y; }));
where function is currently defined as
function radialPoint(x, y) {
return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)];
}
Thanks.
To get linear straight connections, don't use a path generator - d3.linkRadial (or d3.linkHorizontal etc) - use a line:
var link = g.selectAll(".link")
.data(tree(root).links())
.enter().append("line")
.attr("class", "link")
.attr("stroke","#ccc")
.attr("x1", function(d) { return radialPoint(d.source.x,d.source.y)[0]; })
.attr("y1", function(d) { return radialPoint(d.source.x,d.source.y)[1]; })
.attr("x2", function(d) { return radialPoint(d.target.x,d.target.y)[0]; })
.attr("y2", function(d) { return radialPoint(d.target.x,d.target.y)[1]; }) ;
This will keep your links straight, the snippet below should demonstrate this.
var data = { "name": "Root", "children": [
{ "name": "A", "children": [ {"name": "A-1" }, {"name": "A-2" }, {"name":"A-3"}, {"name":"A-4"}, { "name":"A-5"} ] },
{ "name": "B", "children": [ {"name": "B-1" } ] },
{ "name": "C" },
{ "name": "D", "children": [ {"name": "D-1" }, {"name": "D-2" }, {"name": "D-3", "children": [ {"name": "D-3-i"}, {"name":"D-3-ii"} ] } ] },
{ "name": "E" },
{ "name": "F" }
] };
var width = 960;
var height = 500;
margin = {left: 100, top: 100, right: 50, bottom: 50}
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var g = svg.append("g").attr('transform','translate('+ width/2 +','+ height/2 +')');
var root = d3.hierarchy(data);
var tree = d3.tree()
.size([2 * Math.PI, height/2]);
var link = g.selectAll(".link")
.data(tree(root).links())
.enter().append("line")
.attr("class", "link")
.attr("stroke","#ccc")
.attr("x1", function(d) { return radialPoint(d.source.x,d.source.y)[0]; })
.attr("y1", function(d) { return radialPoint(d.source.x,d.source.y)[1]; })
.attr("x2", function(d) { return radialPoint(d.target.x,d.target.y)[0]; })
.attr("y2", function(d) { return radialPoint(d.target.x,d.target.y)[1]; })
;
var node = g.selectAll(".node")
.data(root.descendants())
.enter().append("g")
.attr("class", function(d) { return "node" + (d.children ? " node--internal" : " node--leaf"); })
.attr("transform", function(d) { return "translate(" + radialPoint(d.x, d.y) + ")"; })
node.append("circle")
.attr("r", 2.5);
node.append("text")
.text(function(d) { return d.data.name; })
.attr('y',-10)
.attr('x',-10)
.attr('text-anchor','middle');
function radialPoint(x, y) {
return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)];
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.5.0/d3.min.js"></script>
I'm trying to group the circles in the force directed graph layout, so that i could add the path of semi-circle that would make the circle into two semi-circle clickable sides. I managed to make two sides semi-circle clickable with d3 works just like this fiddle. I seems can't wrap d3 concept how to group, and connect the links.
How can i group the circles and the path and make it works with force layout? What are the concepts that i failed to understand to make this work? What did i do wrong?
Two sides clickable Semi-circle code
var vis = d3.select("body").append("svg")
var pi = Math.PI;
var arc = d3.svg.arc()
.innerRadius(0)
.outerRadius(70)
.startAngle(0) //converting from degs to radians
.endAngle(pi) //just radians
var canvas = vis.attr("width", "400").attr("height", "400").append("g");
// Added height and width so arc is visible
canvas.append("circle")
.attr("r", "70px")
.attr("fill","blue")
.attr("cx",400/2)
.attr("cy",400/2)
.on("click", function(d){
console.log("View");
})
.on("mouseover", function(){ d3.select(this).style("fill", "blue");
console.log(d3.select(this.parentNode).select(".view").style("visibility","visible"));
})
.on("mouseout", function(){
d3.select(this).style("fill", "blue");
console.log(d3.select(this.parentNode).select(".view").style("visibility","hidden"));
});
canvas.append("path")
.attr("d", arc)
.attr("fill", "blue")
.attr("transform", "translate(200,200)")
.on("click",function(d){
console.log("Expand");
})
.on("mouseover", function(){ d3.select(this).style("fill", "blue");
console.log(d3.select(this.parentNode).select(".expand").style("visibility","visible"));
})
.on("mouseout", function(){
d3.select(this).style("fill", "blue");
console.log(d3.select(this.parentNode).select(".expand").style("visibility","hidden"));
});
canvas.append("text")
.attr("dx", "190")
.attr("dy","200")
.attr("class","view")
.text("VIEW")
canvas.append("text")
.attr("dx", "190")
.attr("dy","200")
.attr("class","expand")
.text("Expand")
Force Layout that uses circle as node code, inspired by this stackoverflow question
This fiddle
var words = [{
"group": "n",
"word": "main node",
"children": [{
"group": "n",
"name": "sub node 1"
}, {
"group": "n",
"name": "sub node 2"
}, {
"group": "n",
"name": "sub node 3"
}, {
"group": "v",
"name": "sub node 4"
}, {
"group": "s",
"name": "sub node 5"
}, {
"group": "s",
"name": "sub node 6"
}, {
"group": "s",
"name": "sub node 7"
}, {
"group": "s",
"name": "sub node 8"
}, {
"group": "s",
"name": "sub node 9"
}, {
"group": "s",
"name": "sub node 10"
}, {
"group": "s",
"name": "sub node 11"
}, {
"group": "r",
"name": "sub node 12",
"children": [{
"group": "r",
"name": "sub sub node 1"
}, {
"group": "r",
"name": "sub sub node 2"
}, {
"group": "r",
"name": "sub sub node 3"
}]
}]
}]
var w = 600,
h = 600,
radius = 30,
node,
link,
root;
var pi = Math.PI;
var arc = d3.svg.arc()
.innerRadius(0)
.outerRadius(radius)
.startAngle(0) //converting from degs to radians
.endAngle(pi)
var force = d3.layout.force()
.on("tick", tick)
.charge(function(d) {
return -1000;
})
.linkDistance(function(d) {
return d.target._children ? 200 : 120;
})
.size([w, h - 160]);
var svg = d3.select("#viz").append("svg")
.attr("width", w)
.attr("height", h);
root = words[0]; //set root node
root.fixed = true;
root.x = w / 2;
root.y = h / 2 - 80;
update();
function update() {
var nodes = flatten(root),
links = d3.layout.tree().links(nodes);
// Restart the force layout.
force
.nodes(nodes)
.links(links)
.start();
// Update the links…
link = svg.selectAll(".link")
.data(links);
// Enter any new links.
link.enter().insert("svg:line", ".node")
.attr("class", "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;
});
// Exit any old links.
link.exit().remove();
// Update the nodes…
node = svg.selectAll("circle.node")
.data(nodes, function(d) {
return d.name;
})
.style("fill", color);
node.transition()
.attr("r", radius);
// Enter any new nodes.
node.enter().append("svg:circle")
.attr("class", "node")
.attr("cx", function(d) {
return d.x;
})
.attr("cy", function(d) {
return d.y;
})
.attr("r", radius)
.style("fill", color)
//.on("click", click)
.on("click",function(){
console.log("Click Main Circle")
})
//.call(force.drag);
node.append("title")
.text(function(d) {
return d.name;
});
// Exit any old nodes.
node.exit().remove();
}
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("cx", function(d) {
return d.x;
})
.attr("cy", function(d) {
return d.y;
});
}
// Color leaf nodes orange, and packages white or blue.
function color(d) {
if (d._children) {
return "#95a5a6";
} else {
switch (d.group) {
case 'r': //adverb
return "#e74c3c";
break;
case 'n': //noun
return "#3498db";
break;
case 'v': //verb
return "#2ecc71";
break;
case 's': //adjective
return "#e78229";
break;
default:
return "#9b59b6";
}
}
}
// 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();
}
// Returns a list of all nodes under the root.
function flatten(root) {
var nodes = [],
i = 0;
function recurse(node) {
if (node.children) node.size = node.children.reduce(function(p, v) {
return p + recurse(v);
}, 0);
if (!node.id) node.id = ++i;
nodes.push(node);
return node.size;
}
root.size = recurse(root);
return nodes;
}
I have tried to group the circles, by grouping the circles and adding the semi-circle path in the group, but the layout breaks.
var arc = d3.svg.arc()
.innerRadius(0)
.outerRadius(30)
.startAngle(0) //converting from degs to radians
.endAngle(pi)
var g = node.enter().append("g")
.attr("class", "node");
g.append("svg:circle")
.attr("cx", function(d) {
return d.x;
})
.attr("cy", function(d) {
return d.y;
})
.attr("r", radius)
.style("fill", color)
//.on("click", click)
.on("click",function(){
console.log("Click Main Circle")
})
g.append("path")
.attr("d", arc)
.attr("fill", "blue")
.attr("transform", "translate(200,200)")
.on("click",function(d){
console.log("path");
})
Here is how you can fix your layout problem.
Instead of setting cx and cy to circle in the tick.
Do following:
Make a group
Add circle to above group (do not set cx/cy)
Add path to the above group. (do not set transform)
In tick do following to transform both circle and path which is contained in it.
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;
});
//transform for nodes.
node.attr("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")"
})
}
Working code here
Hope this helps!
I am relatively new to coding and very new to d3. I am currently trying to use d3 with json to make a pack layout representing current presidential candidates and how many times they have talked about a certain issue during the feedback.
I wanted to start small so I made some dummy data in a .json file, it is below:
{
"name": "John Doe",
"party": "democratic",
"issues": [
{ "issue":"issue1", "value": 25 },
{ "issue":"issue2", "value": 10 },
{ "issue":"issue3", "value": 50 },
{ "issue":"issue4", "value": 40 },
{ "issue":"issue5", "value": 5 }
]
}
I want to display bubbles with "issue" as the label and "value" as the circle radius, ending up with five different sized circles on my canvas. Below is my index.html file:
var width = 800, height = 600;
var canvas = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(50, 50)");
var pack = d3.layout.pack()
.size([width, height - 50])
.padding(10);
d3.json("fakedata.json", function (data) {
var nodes = pack.nodes(data);
var node = canvas.selectAll(".node")
.data(nodes)
.enter()
.append("g")
.attr("class", "node")
.attr("transform", function (d) {
return "translate(" + d.x + "," + d.y + ")";
});
node.append("circle")
.attr("r", function (d) { return d.r; })
.attr("fill", "steelblue")
.attr("opacity", 0.25)
.attr("stroke", "#ADADAD")
.attr("stroke-width", "2");
node.append("text")
.text(function (d) {
return d.children ? "" : d.issue;
});
});
I keep getting the error below and I think it is because node is not being set correctly.
Error: Invalid value for <g> attribute transform="translate(NaN,NaN)"
Error: Invalid value for <circle> attribute r="NaN"
Any help would be much appreciated! Thank you!
The JSON you are passing is
{
"name": "John Doe",
"party": "democratic",
"issues": [
{ "issue":"issue1", "value": 25 },
{ "issue":"issue2", "value": 10 },
{ "issue":"issue3", "value": 50 },
{ "issue":"issue4", "value": 40 },
{ "issue":"issue5", "value": 5 }
]
}
It should have been like below note the key name children instead of issues
{
"name": "John Doe",
"party": "democratic",
"children": [
{ "issue":"issue1", "value": 25 },
{ "issue":"issue2", "value": 10 },
{ "issue":"issue3", "value": 50 },
{ "issue":"issue4", "value": 40 },
{ "issue":"issue5", "value": 5 }
]
}
Working code here.
The answer is a bit late, but in case you don't want to change your data structure and you want to keep the issues property, you can explicitly tell D3 to use the issues property for children data using the children() call:
var pack = d3.layout.pack()
.size([width, height - 50])
.children(function (d) { return d.issues; })
.padding(10);