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In d3.js treemap layout how to make the last child clickable and fill the entire treemap layout

Im using d3.js treemap layout . In the treemap , on clicking the parent segment with the children property it transitions into its respective child sub segments . But on clicking the last child without any children property it wont make the transition happens to fill only that child node in the entire layout . In the code that im working on I can redirect to a new window on click of the last child but not sure how to make the transition happening .
Find my code in the link https://codesandbox.io/s/affectionate-thunder-l024x
class TreemapChart extends React.Component {
componentDidMount() {
const self = this;
var margin = { top: 20, right: 0, bottom: 0, left: 0 },
width = 960,
height = 500 - margin.top - margin.bottom,
transitioning;
var x = d3.scale
.linear()
.domain([0, width])
.range([0, width]);
var y = d3.scale
.linear()
.domain([0, height])
.range([0, height]);
var treemap = d3.layout
.treemap()
.children(function(d, depth) {
return depth ? null : d._children;
})
.sort(function(a, b) {
return a.value - b.value;
})
.ratio((height / width) * 0.5 * (1 + Math.sqrt(5)))
.round(false);
var svg = d3
.select("#chart")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.bottom + margin.top)
.style("margin-left", -margin.left + "px")
.style("margin.right", -margin.right + "px")
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.style("shape-rendering", "crispEdges");
// .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.children ? null : d.name + "<br>" );
// }).on("mouseout", function (d) {
// tool.style("display", "none");
// });
var grandparent = svg.append("g").attr("class", "grandparent");
grandparent
.append("rect")
.attr("y", -margin.top)
.attr("width", width)
.attr("height", margin.top);
grandparent
.append("text")
.attr("x", 6)
.attr("y", 6 - margin.top)
.attr("dy", ".35em");
function dataMap(root) {
initialize(root);
accumulate(root);
accumulateCount(root);
layout(root);
display(root);
function initialize(root) {
root.x = root.y = 0;
root.dx = width;
root.dy = height;
root.depth = 0;
}
// Aggregate the values for internal nodes. This is normally done by the
// treemap layout, but not here because of our custom implementation.
// We also take a snapshot of the original children (_children) to avoid
// the children being overwritten when when layout is computed.
function accumulate(d) {
return (d._children = d.children)
? (d.value = d.children.reduce(function(p, v) {
return p + accumulate(v);
}, 0))
: d.value;
}
function accumulateCount(d) {
return (d._children = d.children)
? (d.count = d.children.reduce(function(p, v) {
return p + accumulateCount(v);
}, 0))
: d.count;
}
function layout(d) {
if (d._children) {
treemap.nodes({ _children: d._children });
d._children.forEach(function(c) {
c.x = d.x + c.x * d.dx;
c.y = d.y + c.y * d.dy;
c.dx *= d.dx;
c.dy *= d.dy;
c.parent = d;
layout(c);
});
}
}
function display(d) {
// console.log(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);
g.selectAll(".child")
.data(function(d) {
return d._children || [d];
})
.enter()
.append("rect")
.attr("class", "child")
.call(rect);
g.append("rect")
.attr("class", "parent")
.call(rect)
.on("click", function(d) {
if (!d._children) {
window.open(d.url);
}
})
.append("title")
.text(function(d) {
return `${d.name} (${d.count})`;
});
g.append("text")
.attr("dx", "1rem")
.attr("dy", "2rem")
.text(function(d) {
return `${d.name}`;
})
.call(text);
function transition(d) {
self.props.onClickSegment(d.metricsValue);
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("text")
.call(text)
.style("fill-opacity", 0);
t2.selectAll("text")
.call(text)
.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;
}
function text(text) {
text
.attr("x", function(d) {
return x(d.x) + 6;
})
.attr("y", function(d) {
return y(d.y) + 6;
});
}
function rect(rect) {
rect
.attr("x", function(d) {
return x(d.x);
})
.attr("y", function(d) {
return y(d.y);
})
.attr("width", function(d) {
return x(d.x + d.dx) - x(d.x);
})
.attr("height", function(d) {
return y(d.y + d.dy) - y(d.y);
});
}
function name(d) {
return d.parent ? name(d.parent) + " / " + d.name : d.name;
}
}
dataMap(dataObj);
}
handleClick = d => {
// this.props.onClickSegment(d.metricsValue);
console.log("The text", d.metricsValue);
};
render() {
return <p id="chart" />;
}
}
I need to click the last child and on clicking the last child should fill the layout with the respective breadcrumb like in the code.

Take input for treemap using json objects not to read from csv file

I'm trying to build a Zoomable TreeMap using d3 js. I need to take an array of JSON objects from the server and pass it to tha treeMap and let the treemap handle it. But in doing so I'm not able to parse it
Here's my code for the tremap:
$rootScope.loadTreeMap = function(path_to_data,dom_element_to_append_to){
var w = $(dom_element_to_append_to).width() - 80,
h = 800 - 180,
x = d3.scale.linear().range([0, w]),
y = d3.scale.linear().range([0, h]),
color = d3.scale.category20c(),
root,
node;
console.log("W" + w);
console.log("h " + h);
var treemap = d3.layout.treemap()
.round(false)
.size([w, h])
.sticky(true)
.value(function(d) { return d.size; });
var svg = d3.select(dom_element_to_append_to).append("div")
.attr("class", "chart")
.style("width", w + "px")
.style("height", h + "px")
.append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(.5,.5)");
d3.json(path_to_data, function(data) {
node = root = data;
var nodes = treemap.nodes(root)
.filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")
.data(nodes)
.enter().append("svg:g")
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });
cell.append("svg:rect")
.attr("width", function(d) { return d.dx - 1; })
.attr("height", function(d) { return d.dy - 1; })
.style("fill", function(d) { return color(d.parent.name); });
cell.append("svg:text")
.attr("x", function(d) { return d.dx / 2; })
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.name; })
.style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });
d3.select(window).on("click", function() { zoom(root); });
d3.select("select").on("change", function() {
treemap.value(this.value == "size" ? size : count).nodes(root);
zoom(node);
});
});
function size(d) {
return d.size;
}
function count(d) {
return 1;
}
function zoom(d) {
var kx = w / d.dx, ky = h / d.dy;
x.domain([d.x, d.x + d.dx]);
y.domain([d.y, d.y + d.dy]);
var t = svg.selectAll("g.cell").transition()
.duration(d3.event.altKey ? 7500 : 750)
.attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; });
t.select("rect")
.attr("width", function(d) { return kx * d.dx - 1; })
.attr("height", function(d) { return ky * d.dy - 1; })
t.select("text")
.attr("x", function(d) { return kx * d.dx / 2; })
.attr("y", function(d) { return ky * d.dy / 2; })
.style("opacity", function(d) { return kx * d.dx > d.w ? 1 : 0; });
node = d;
d3.event.stopPropagation();
}
}
`
Basically it is working fine if I load the data from a csv file stored in my system, but I want to read an array of objects from the server and then build the graph on it.
Basically here's my function which reads from the file and parses the JSON objects:
d3.json(path_to_data, function(data) {
/*console.log("data");
console.log(data);
console.log("data");
data = JSON.parse(inputData);
console.log(data);*/
node = root = data;
var nodes = treemap.nodes(root)
.filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")
.data(nodes)
.enter().append("svg:g")
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });
cell.append("svg:rect")
.attr("width", function(d) { return d.dx - 1; })
.attr("height", function(d) { return d.dy - 1; })
.style("fill", function(d) { return color(d.parent.name); });
cell.append("svg:text")
.attr("x", function(d) { return d.dx / 2; })
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.name; })
.style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });
d3.select(window).on("click", function() { zoom(root); });
d3.select("select").on("change", function() {
treemap.value(this.value == "size" ? size : count).nodes(root);
zoom(node);
});
});
But I want to do something different like
node = root = inputdata ; here input data is array of json objects fetched from server
var nodes = treemap.nodes(root).filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")

i figured the solution to this just remove the d3.csv function ( but don't remove the body of function as your graph will generate with the body of functions only) and pass your own variable conatining the JSON objects as required by the graphs type. This will work in approximately all graphs in which data is taken through d3.csv or d3.json here's a working code
$rootScope.loadTreeMap = function(path_to_data,dom_element_to_append_to){
var w = $(dom_element_to_append_to).width() - 80,
h = 800 - 180,
x = d3.scale.linear().range([0, w]),
y = d3.scale.linear().range([0, h]),
color = d3.scale.category20c(),
root,
node;
console.log("W" + w);
console.log("h " + h);
var treemap = d3.layout.treemap()
.round(false)
.size([w, h])
.sticky(true)
.value(function(d) { return d.size; });
var svg = d3.select(dom_element_to_append_to).append("div")
.attr("class", "chart")
.style("width", w + "px")
.style("height", h + "px")
.append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(.5,.5)");
/* d3.json(path_to_data, function(data) {*/
remove the above line and insert your own JSON object variable like
data = inputData(your own JSON variable)
node = root = data;
var nodes = treemap.nodes(root)
.filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")
.data(nodes)
.enter().append("svg:g")
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });
cell.append("svg:rect")
.attr("width", function(d) { return d.dx - 1; })
.attr("height", function(d) { return d.dy - 1; })
.style("fill", function(d) { return color(d.parent.name); });
cell.append("svg:text")
.attr("x", function(d) { return d.dx / 2; })
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.name; })
.style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });
d3.select(window).on("click", function() { zoom(root); });
d3.select("select").on("change", function() {
treemap.value(this.value == "size" ? size : count).nodes(root);
zoom(node);
});
});
function size(d) {
return d.size;
}
function count(d) {
return 1;
}
function zoom(d) {
var kx = w / d.dx, ky = h / d.dy;
x.domain([d.x, d.x + d.dx]);
y.domain([d.y, d.y + d.dy]);
var t = svg.selectAll("g.cell").transition()
.duration(d3.event.altKey ? 7500 : 750)
.attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; });
t.select("rect")
.attr("width", function(d) { return kx * d.dx - 1; })
.attr("height", function(d) { return ky * d.dy - 1; })
t.select("text")
.attr("x", function(d) { return kx * d.dx / 2; })
.attr("y", function(d) { return ky * d.dy / 2; })
.style("opacity", function(d) { return kx * d.dx > d.w ? 1 : 0; });
node = d;
d3.event.stopPropagation();
}
}

D3 Treemap parent and children

Trying to understand this example http://bl.ocks.org/hemulin/3247757 of the treemap which uses a zoom feature. Currently the treemap uses the children to display at level 0.I'm trying to modify it so it can display the parent at level 0 and when clicked on it will zoom in and display the children at level 1.
I've looked up Treemap example but don't quiet understand them. I'm not expecting someone to do this for me. Just a point in to the right direction would be great.
My code:
var w = 1280 - 80,
h = 800 - 180,
x = d3.scale.linear().range([0, w]),
y = d3.scale.linear().range([0, h]),
color = d3.scale.category10(),
root,
node;
var treemap = d3.layout.treemap()
.round(false)
.size([w, h])
.sticky(true)
.padding([10, 0, 0, 0])
.value(function(d) { return d.size; });
var svg = d3.select("#body").append("div")
.attr("class", "chart")
.style("width", w + "px")
.style("height", h + "px")
.append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(.5,.5)");
node = root = pathJson;
var nodes = treemap.nodes(root)
.filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")
.data(nodes)
.enter().append("svg:g")
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });
cell.append("svg:rect")
.attr("width", function(d) { return d.dx - 1; })
.attr("height", function(d) { return d.dy - 1; })
.style("fill", function(d) { return color(d.parent.name); });
cell.append("svg:text")
.attr("x", function(d) { return d.dx / 2; })
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.name; })
.style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });
d3.select(window).on("click", function() { zoom(root); });
d3.select("select").on("change", function() {
treemap.value(this.value == "size" ? size : count).nodes(root);
zoom(node);
});
function size(d) {
return d.size;
}
function count(d) {
return 1;
}
function zoom(d) {
//alert(d.name);
var kx = w / d.dx, ky = h / d.dy;
x.domain([d.x, d.x + d.dx]);
y.domain([d.y, d.y + d.dy]);
var t = svg.selectAll("g.cell").transition()
.duration(d3.event.altKey ? 7500 : 750)
.attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; });
t.select("rect")
.attr("width", function(d) { return kx * d.dx - 1; })
.attr("height", function(d) { return ky * d.dy - 1; })
t.select("text")
.attr("x", function(d) { return kx * d.dx / 2; })
.attr("y", function(d) { return ky * d.dy / 2; })
.style("opacity", function(d) { return kx * d.dx > d.w ? 1 : 0; });
//.style("font-size", function(d) { return kx * d.dx > d.w ? "20px" : "12px";});
node = d;
d3.event.stopPropagation();
}
https://jsfiddle.net/noobiecode/9ev9qjt3/1/
Many thanks in advance.

Changed cell.text(function(d) { return d.name; }) to cell.text(function(d) { return d.parent.name; }). This now gets the name of the parent instead of the children.

dynamically update d3.js treemap

I am trying to dynamically update my d3 treemap when the data updates. I have two functions, one that I call initially to build the treemap and another to redraw the treemap. When I redraw the treemap, I get a thin black bar on top of the treemap, and the first element in the array that I am graphing goes black. If I click on either of the two black elements. I get the error...
Uncaught TypeError: Cannot read property 'dx' of undefined
So the data being passed to the cell is undefined.
Additionally when I call regraph I have checked and the data has changed, but the graph is unchanged from when I initially built the treemap with the exception of the two black elements.
The code for building the treemap is below. Also the createObj function takes two arrays and creates a Json object.
function drawTreeMap(array1,array2){
console.log("got to drawing");
nestedJson=createObj(array1, array2);
w = 1880 - 80,
h = 900 - 180,
x = d3.scale.linear().range([0, w]),
y = d3.scale.linear().range([0, h]),
color = d3.scale.linear()
.range(['lightgreen', 'darkgreen']) // or use hex values
.domain([computeMin(array2), computeMaxNum(array2)]);
root,
node;
treemap = d3.layout.treemap()
.round(false)
.size([w, h])
.sticky(true)
.padding([10, 0, 0, 0])
.value(function(d) { return d.size; });
svg = d3.select("#body").append("div")
.attr("class", "chart")
.style("width", w + "px")
.style("height", h + "px")
.append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(.5,.5)");
node = root = nestedJson;
var nodes = treemap.nodes(root)
.filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")
.data(nodes)
.enter().append("svg:g")
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });
cell.append("svg:rect")
.attr("width", function(d) { return d.dx - 1; })
.attr("height", function(d) { return d.dy ; })
.style("fill", function(d) { return color(d.size)});
cell.append("svg:text")
.attr("x", function(d) { return d.dx / 2; })
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return (d.name+",-- "+d.size); })
.style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });
d3.select(window).on("click", function() { zoom(root); });
d3.select("select").on("change", function() {
treemap.value(this.value == "size" ? size : count).nodes(root);
zoom(node);
});
}
The code for redrawing is below.
function redrawGraphFromJson(data) {
treemap = d3.layout.treemap()
.round(false)
.size([w,h])
.value(function(d) { return d.size; })
.sticky(true);
// Draw the graph
node = root = data;
var nodes = treemap.nodes(root)
.filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")
.data(nodes)
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });
cell.append("svg:rect")
.attr("width", function(d) { return d.dx - 1; })
.attr("height", function(d) { return d.dy ; })
.style("fill", function(d) { return color(d.size);});
cell.append("svg:text")
.attr("x", function(d) { return d.dx / 2; })
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return (d.name+",-- "+d.size); })
.style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });
}
Thank you.

In your redrawing of the graph, you are going to want to .exit() on the initial graph and then .enter() to update the groups with the new data. This will replace the old map with the new.
http://bost.ocks.org/mike/join/ explains it perfectly and has a really good example to look at.

D3 Treemap with fisheye

I have a large dataset being visualized by a treemap. There are 2 problems I am facing:
Load and display times on localhost are very slow. Expect worse performance over ajax calls. My dataset is 400 parents, each with approximately 10-15 children. A parent only have children (children do not have children)
Because there are 400 parents on the top level the initial treemap is very crowded. What I would like to implement is the fisheye functionality. However, my code below does not work, meaning when I move the mouse over the treemap I do not see the fisheye. I see the mouse x-y being correctly outputted to the console. but not the image.
var svg = d3.select("#body").append("div")
.attr("class", "chart")
.style("width", w + "px")
.style("height", h + "px")
.append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(.5,.5)");'
d3.json("../data/flare.json", function(data) {
node = root = data;
var nodes = treemap.nodes(root)
.filter(function(d) { return !d.children; });
var cell = svg.selectAll("g")
.data(nodes)
.enter()
.append("svg:g")
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
.on("click", function(d) { return zoom(node == d.parent ? root : d.parent); });
cell.append("svg:rect")
.attr("width", function(d) { return d.dx - 1; })
.attr("height", function(d) { return d.dy - 1; })
.style("fill", function(d) { return color(d.parent.name); });
cell.append("svg:text")
.attr("x", function(d) { return d.dx / 2; })
.attr("y", function(d) { return d.dy / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.name; })
.style("opacity", function(d) { d.w = this.getComputedTextLength(); return d.dx > d.w ? 1 : 0; });
d3.select(window).on("click", function() { zoom(root); });
d3.select("select").on("change", function() {
treemap.value(this.value == "size" ? size : count).nodes(root);
zoom(node);
});
var xFisheye = d3.fisheye.scale(d3.scale.identity).domain([0, w]).focus(360),
yFisheye = d3.fisheye.scale(d3.scale.identity).domain([0, h]).focus(90);
svg.on("mousemove", function() {
var mouse = d3.mouse(this);
xFisheye.focus(mouse[0]);
yFisheye.focus(mouse[1]);
redraw();
});
function redraw() {
cell.attr("x1", xFisheye).attr("x2", xFisheye);
cell.attr("y1", xFisheye).attr("y2", xFisheye);
}
});