Develop Reference

I wanted to make last child or root node in d3 zoomable sunburst as a hyperlink, trying to find the last child node and make the transition to url

I'm new to d3js so I watched many tutorial video and developed the chart, but now I got stuck to make the last child node as a hyperlink, I also refered this How can I make last node in d3 zoomable sunburst as a hyperlink? and tried to solve this but I couldn't. Since I'm new could anyone please help me in solving this.
Here I'm attaching the js file please help me in which location do I need to check for the child node and while transition I wanted to make it as hyperlink.
`
function getData() {
return {
"name": "Main",
"children": [
{
"name": "Section1",
"url": "",
"children": [{
"name": "Test11 ",
"size": 1,
"url": "https://www.google.com"
}, {
"name": "Section12 ",
"size": 1
}, {
"name": "Section13 ",
"size": 1
}, {
"name": "Section14 ",
"size": 1
}]
},
{
"name": "Section2",
"url": "",
"children": [{
"name": "Section21 ",
"size": 1,
"url": "https://www.google.com"
}, {
"name": "Section22 ",
"size": 1
}, {
"name": "Section23 ",
"size": 1
}, {
"name": "Section24 ",
"size": 1
}]
}, {
"name": "Section3",
"url": "",
"children": [{
"name": "Section31 ",
"size": 1,
"url": "https://www.google.com"
}, {
"name": "Section32 ",
"size": 1
}, {
"name": "Section33 ",
"size": 1
}, {
"name": "Section34 ",
"size": 1
}]
}, {
"name": "Section4",
"url": "",
"children": [{
"name": "Section41 ",
"size": 1,
"url": "https://www.google.com"
}, {
"name": "Section42 ",
"size": 1
}, {
"name": "Section43 ",
"size": 1
}, {
"name": "Section44 ",
"size": 1
}]
},]
}
};
var colorScheme = ["#1c1c1e", "#FFCC00", "#007AFF", "#FF2C55", "#FF9501", "#AF52DE", "#5AC8FB", "#5855D6", "#35C75A", "#00a86b", "#ca3433", "#00E676"];
dataset = getData();
var width = 500,
height = 500,
radius = Math.min(width / 2, height / 2) * .80;
var x = d3.scale.linear()
.range([0, 2 * Math.PI]);
var y = d3.scale.linear()
.range([-90, radius]);
var color = d3.scale.ordinal().range(colorScheme);
var divHeight = height;
var divWidth = width;
var svg = d3.select("#bodyChart").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + divWidth / 2 + "," + height / 2 + ") rotate(-90 0 0)");
var partition = d3.layout.partition()
.value(function (d) {
return d.size;
});
var tooltip = d3.select("body")
.append("div")
.attr("class", "tooltip")
.style("position", "absolute")
.style("z-index", "10")
.style("opacity", 0);
var arc = d3.svg.arc()
.startAngle(function (d) {
if (d.size != 0)
return Math.max(0, Math.min(2 * Math.PI, x(d.x)));
})
.endAngle(function (d) {
if (d.depth == 0)
return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx)));
if (d.depth == 2) {
return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx)));
}
if (d.size != 0)
return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx)));
})
.innerRadius(function (d) {
if (d.size != 0)
return Math.max(0, y(d.y));
})
.outerRadius(function (d) {
if (d.size != 0)
return Math.max(0, y(d.y + d.dy) * 1.25);
});
var root = dataset;
var g = svg.selectAll("g")
.data(partition.nodes(root))
.enter().append("g");
var path = g.append("path")
.attr("d", arc)
.style("fill", function (d) { return color((d.children ? d : d.parent).name); })
.on("click", click)
.on("mouseover", function (d) {
tooltip.html('<a href= "' + d.url + '"' +
"</a>" + d.name);
//function () {return d.name + "<br>" + d.url; });
return tooltip.transition()
.duration(100)
.style("opacity", 0.9);
})
.on("mousemove", function (d) {
return tooltip
.style("top", (d3.event.pageY - 2) + "px")
.style("left", (d3.event.pageX + 2) + "px");
})
.on("mouseout", function () { return tooltip.style("opacity", 0); });
var text = g.append("text")
.attr("x", function (d) {
return y(d.y);
})
.attr("dx", function (d) {
return d.depth == 0 ? "9" : "9"
}) // margin
.attr("dy", ".35em")
.attr("transform", function (d) {
return "rotate(" + computeTextRotation(d) + ")";
})
.text(function (d) {
return d.size == null ? d.name : d.name;
})
.style("fill", "black");
function computeTextRotation(d) {
var angle = x(d.x + d.dx / 2) - Math.PI / 2;
return angle / Math.PI * 180;
}
function click(d) {
if (d.size !== undefined) {
d.size += 100;
};
text.transition().attr("opacity", 0);
path.transition()
.duration(750)
.attrTween("d", arcTween(d))
.each("end", function (e, i) {
if (e.x >= d.x && e.x < (d.x + d.dx)) {
var arcText = d3.select(this.parentNode).select("text");
arcText.transition().duration(750)
.attr("opacity", 1)
.attr("transform", function () {
return "rotate(" + computeTextRotation(e) + ")"
})
.attr("x", function (d) {
return y(d.y);
});
}
});
}
var insertLinebreaks = function (t, d, width) {
var el = d3.select(t);
var p = d3.select(t.parentNode);
p.append("g")
.attr("x", function (d) {
return y(d.y);
})
.attr("transform", function (d) {
return "rotate(" + computeTextRotation(d) + ")";
})
.append("foreignObject")
.attr('x', -width / 2)
.attr("width", width)
.attr("height", 200)
.append("xhtml:p")
.attr('style', 'word-wrap: break-word; text-align:center;')
.html('d.name');
el.remove();
};
d3.select(self.frameElement).style("height", height + "px");
function arcTween(d) {
var xd = d3.interpolate(x.domain(), [d.x, d.x + d.dx]),
yd = d3.interpolate(y.domain(), [d.y, 1]),
yr = d3.interpolate(y.range(), [d.y ? 20 : 0, radius]);
return function (d, i) {
return i ? function (t) {
return arc(d);
} : function (t) {
x.domain(xd(t));
y.domain(yd(t)).range(yr(t));
return arc(d);
};
};
}
Thank you in advance.

D3 zoomable sunburst not fully circle

I'm just getting started with d3js and I'm trying to make a zoomable sunburst. I've copied a tutorial but because most of the data given there were very complex I tried to change the data into much simpler ones. Unfortunately after that , the outer svg becomes an incomplete circle. There's a line at the bottom of it. Not sure whether I have to change the data or the outerradius. Thanks in advance.
var flaredata = {
"name": "Root",
"children": [{
"name": "A1",
"children": [{
"name": "B1",
"size": 30
},
{
"name": "B2",
"size": 40
},
{
"name": "B3",
"size": 40
}
]
},
{
"name": "A2",
"children": [{
"name": "B4",
"size": 40
},
{
"name": "B5",
"size": 30
},
{
"name": "B6",
"size": 10
}
]
},
{
"name": "A3",
"children": [{
"name": "B7",
"size": 50
},
{
"name": "B8",
"size": 15
}
]
}
]
}
var width = 500,
height = 500,
radius = Math.min(width, height) / 2;
var x = d3.scale.linear()
.range([0, 2 * Math.PI]);
var y = d3.scale.linear()
.range([0, radius]);
var color = d3.scale.category20c();
var svg = d3.select("section").append("svg")
.attr("width", width)
.attr("height", height)
.datum(flaredata) // this line is modified according to provided solution here: https://stackoverflow.com/questions/17019572/d3-sunburst-doesnt-draw-with-inline-json
// data() was replaced with datum() as suggested by Lars Kotthoff
.append("g")
.attr("transform", "translate(" + width / 2 + "," + (height / 2 + 10) + ")");
var partition = d3.layout.partition()
.value(function(d) {
return d.size;
});
var arc = d3.svg.arc()
.startAngle(function(d) {
return Math.max(0, Math.min(2 * Math.PI, x(d.x)));
})
.endAngle(function(d) {
return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx)));
})
.innerRadius(function(d) {
return Math.max(0, y(d.y));
})
.outerRadius(function(d) {
return Math.max(0, y(d.y + d.dy));
});
// d3.json("flare.json", function(error, root) {
var g = svg.selectAll("g")
.data(partition.nodes) // removed "root" argument here
.enter().append("g");
var path = g.append("path")
.attr("d", arc)
.style("fill", function(d) {
return color((d.children ? d : d.parent).name);
})
.on("click", click);
var text = g.append("text")
.attr("transform", function(d) {
return "rotate(" + computeTextRotation(d) + ")";
})
.attr("x", function(d) {
return y(d.y);
})
.attr("dx", "6") // margin
.attr("dy", ".35em") // vertical-align
.text(function(d) {
return d.name;
});
function click(d) {
// fade out all text elements
text.transition().attr("opacity", 0);
path.transition()
.duration(750)
.attrTween("d", arcTween(d))
.each("end", function(e, i) {
// check if the animated element's data e lies within the visible angle span given in d
if (e.x >= d.x && e.x < (d.x + d.dx)) {
// get a selection of the associated text element
var arcText = d3.select(this.parentNode).select("text");
// fade in the text element and recalculate positions
arcText.transition().duration(750)
.attr("opacity", 1)
.attr("transform", function() {
return "rotate(" + computeTextRotation(e) + ")"
})
.attr("x", function(d) {
return y(d.y);
});
}
});
}
// });
d3.select(self.frameElement).style("height", height + "px");
// Interpolate the scales!
function arcTween(d) {
var xd = d3.interpolate(x.domain(), [d.x, d.x + d.dx]),
yd = d3.interpolate(y.domain(), [d.y, 1]),
yr = d3.interpolate(y.range(), [d.y ? 20 : 0, radius]);
return function(d, i) {
return i ?
function(t) {
return arc(d);
} :
function(t) {
x.domain(xd(t));
y.domain(yd(t)).range(yr(t));
return arc(d);
};
};
}
function computeTextRotation(d) {
return (x(d.x + d.dx / 2) - Math.PI / 2) / Math.PI * 180;
}

The circle is drawn completely. The problem might be that your SVG is not big enough to display all of it with the given y-translation of 10.
One of the most easy way might be to change this line of code:
radius = (Math.min(width, height) / 2) - 5; // <-- -5 is just a suggestion.
If you want to display it in the biggest size possible without any borders you can change the following line of code instead which is "the main source" of your problem:
.attr("transform", "translate(" + width / 2 + "," + (height / 2 + 10) + ")"); // + 10 as y translation makes the element appear with a top distance of 260 in this case.
If you remove the +10 it should perfectly fit inside the SVG.

Capturing/Saving the current state of d3.js Sunburst Chart

I am a newbie to d3.js . I am working in d3.js zoomable sunburst chart http://bl.ocks.org/mbostock/4348373. When the user zoom into a particular arc and I need to capture this state of the sunburst diagram . When the user comes back to the sunburst diagram or load the graph again he should see the state where he left.
Note : I dont want to serialise the svg elements to show the state of the sunburst. If i serialise it then the chart will be static and user cant click on the sunburst and traverse to other arcs.
Proposed Solution :
one solution came to my mind is simulate mouse clicks on the sunburst nodes till the last node user looks into.
I am not able to devise an algorithm for this .
Please guide me whether any other solution is possible ..

The approach you said is easy to implement. I have made a small sample for it.
Click the Start Save button to start saving the state of Sunburst. Click Stop Save button after performing a few zooming actions. You can make any further changes to the chart. Now, clicking Load button will show you the saved state of the chart.
var width = 500,
height = 500,
radius = Math.min(width, height) / 2;
var x = d3.scale.linear()
.range([0, 2 * Math.PI]);
var y = d3.scale.sqrt()
.range([0, radius]);
var color = d3.scale.category10();
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + (height / 2 + 10) + ") rotate(-90 0 0)");
var partition = d3.layout.partition()
.value(function(d) {
return d.size;
});
var arc = d3.svg.arc()
.startAngle(function(d) {
return Math.max(0, Math.min(2 * Math.PI, x(d.x)));
})
.endAngle(function(d) {
return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx)));
})
.innerRadius(function(d) {
return Math.max(0, y(d.y));
})
.outerRadius(function(d) {
return Math.max(0, y(d.y + d.dy));
});
var root = getData();
var savedData = partition.nodes(root);
var g = svg.selectAll("g")
.data(partition.nodes(root))
.enter().append("g");
var path = g.append("path")
.attr("d", arc)
.style("fill", function(d) {
return color((d.children ? d : d.parent).name);
})
.on("click", click);
var text = g.append("text")
.attr("x", function(d) {
return y(d.y);
})
.attr("dx", "6") // margin
.attr("dy", ".35em") // vertical-align
.attr("transform", function(d) {
return "rotate(" + computeTextRotation(d) + ")";
})
.text(function(d) {
return d.name;
})
.style("fill", "white");
function computeTextRotation(d) {
var angle = x(d.x + d.dx / 2) - Math.PI / 2;
return angle / Math.PI * 180;
}
var saveData = false;
var savedData = [];
d3.select("#saveBtn").on("click", function() {
if (d3.select(this).attr("value") == "Start Save") {
savedData = [];
d3.select(this).attr("value", "Stop Save");
saveData = true;
} else {
d3.select(this).attr("value", "Start Save");
saveData = false;
}
});
d3.select("#loadBtn").on("click", function() {
var root = g.filter(function(d) {
return d.name == "Root"
}).data();
click(root[0]);
savedData.forEach(function(val) {
var node = g.filter(function(d, i) {
return i == val
}).data();
click(node[0]);
});
});
function click(d, i) {
if (saveData) {
if(d.name=="Root"){
savedData = [];
} else{
savedData.push(i);
}
}
// fade out all text elements
if (d.size !== undefined) {
d.size += 100;
};
text.transition().attr("opacity", 0);
path.transition()
.duration(750)
.attrTween("d", arcTween(d))
.each("end", function(e, i) {
// check if the animated element's data e lies within the visible angle span given in d
if (e.x >= d.x && e.x < (d.x + d.dx)) {
// get a selection of the associated text element
var arcText = d3.select(this.parentNode).select("text");
// fade in the text element and recalculate positions
arcText.transition().duration(750)
.attr("opacity", 1)
.attr("transform", function() {
return "rotate(" + computeTextRotation(e) + ")"
})
.attr("x", function(d) {
return y(d.y);
});
}
});
}
// Word wrap!
var insertLinebreaks = function(t, d, width) {
alert(0)
var el = d3.select(t);
var p = d3.select(t.parentNode);
p.append("g")
.attr("x", function(d) {
return y(d.y);
})
.attr("transform", function(d) {
return "rotate(" + computeTextRotation(d) + ")";
})
.append("foreignObject")
.attr('x', -width / 2)
.attr("width", width)
.attr("height", 200)
.append("xhtml:p")
.attr('style', 'word-wrap: break-word; text-align:center;')
.html(d.name);
alert(1)
el.remove();
alert(2)
};
d3.select(self.frameElement).style("height", height + "px");
// Interpolate the scales!
function arcTween(d) {
var xd = d3.interpolate(x.domain(), [d.x, d.x + d.dx]),
yd = d3.interpolate(y.domain(), [d.y, 1]),
yr = d3.interpolate(y.range(), [d.y ? 20 : 0, radius]);
return function(d, i) {
return i ? function(t) {
return arc(d);
} : function(t) {
x.domain(xd(t));
y.domain(yd(t)).range(yr(t));
return arc(d);
};
};
}
function getData() {
return {
"name": "Root",
"children": [{
"name": "A1",
"children": [{
"name": "B1",
"size": 30
}, {
"name": "B2",
"size": 40
}, {
"name": "B3",
"children": [{
"name": "C1",
"size": 10
}, {
"name": "C2",
"size": 15
}]
}]
}, {
"name": "A2",
"children": [{
"name": "B4",
"size": 40
}, {
"name": "B5",
"size": 30
}, {
"name": "B6",
"size": 10
}]
}, {
"name": "A3",
"children": [{
"name": "B7",
"size": 50
}, {
"name": "B8",
"size": 15
}
]
}]
}
};
path {
stroke: #fff;
fill-rule: evenodd;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<div id="main"></div>
<input type="button" value="Start Save" id="saveBtn"/>
<input type="button" value="Load" id="loadBtn"/>
I don't know where do you plan to save the state of the sunburst. I would suggest that Localstorage would be a nice option.
Hope this helps.

d3.js pie chart with angled/horizontal labels

I'm working on a pie chart mock. That I need to try and match the designs to have the label extruding out with a horizontal line attached to the slice ticks. Is this possible? It would be a bonus to have the black dots form on the segments.
http://jsfiddle.net/BxLHd/15/
Here is the code for the tick marks. Would it be a case of creating another set of lines that intersect?
//draw tick marks
var label_group = d3.select('#'+pieId+' .label_group');
lines = label_group.selectAll("line").data(filteredData);
lines.enter().append("svg:line")
.attr("x1", 0)
.attr("x2", 0)
.attr("y1", function(d){
if(d.value > threshold){
return -that.r-3;
}else{
return -that.r;
}
})
.attr("y2", function(d){
if(d.value > threshold){
return -that.r-8;
}
else{
return -that.r;
}
})
.attr("stroke", "gray")
.attr("transform", function(d) {
return "rotate(" + (d.startAngle+d.endAngle)/2 * (180/Math.PI) + ")";
});
lines.transition()
.duration(this.tweenDuration)
.attr("transform", function(d) {
return "rotate(" + (d.startAngle+d.endAngle)/2 * (180/Math.PI) + ")";
});
lines.exit().remove();

Here's a proof of concept (using a different example than yours as a basis as there's quite a lot of code in yours). This is the basic approach:
For each label, compute the start and end of the line underneath it. This is done by drawing the label and getting its bounding box.
This gives two points on the pointer path, the third is the center of the respective segment. This is computed while computing the positions of the labels.
These three points become part of the data. Now draw paths for each of the data elements, using the three points computed before.
Add an SVG marker at the end of each path for the dot.
Here's the code to do it, step by step.
.attr("x", function(d) {
var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2;
d.cx = Math.cos(a) * (radius - 75);
return d.x = Math.cos(a) * (radius - 20);
})
.attr("y", function(d) {
var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2;
d.cy = Math.sin(a) * (radius - 75);
return d.y = Math.sin(a) * (radius - 20);
})
This is computing the x and y positions of the labels outside the segments. We also compute the position of the final point of the pointer path, in the center of the segment. That is, both in the middle between start and end angle and between inner and outer radii. This is added to the data.
.text(function(d) { return d.value; })
.each(function(d) {
var bbox = this.getBBox();
d.sx = d.x - bbox.width/2 - 2;
d.ox = d.x + bbox.width/2 + 2;
d.sy = d.oy = d.y + 5;
});
After adding the text label (in this case, simply the value), we get for each the bounding box and compute the remaining two points for the path, just below the text to the left and just below to the right.
svg.selectAll("path.pointer").data(piedata).enter()
.append("path")
.attr("class", "pointer")
.style("fill", "none")
.style("stroke", "black")
.attr("marker-end", "url(#circ)")
.attr("d", function(d) {
if(d.cx > d.ox) {
return "M" + d.sx + "," + d.sy + "L" + d.ox + "," + d.oy + " " + d.cx + "," + d.cy;
} else {
return "M" + d.ox + "," + d.oy + "L" + d.sx + "," + d.sy + " " + d.cx + "," + d.cy;
}
});
Now we can actually add the paths. They are a straightforward connection of the three points computed before, with a marker added at the end. The only thing to watch out for is that, depending on whether the label is on the left or the right of the chart, the path needs to start at the lower left of the label or the lower right. This is the if statement here.
Complete demo here.

Here is the plugin code that should allow multiple instances of the pie chart - along with being able to update each pie chart with a new set of data.
I am open to ways to enhance the code. I feel it still looks a bit bulky - especially the way I am reseting the selector on update. Any suggestions to streamline this?
http://jsfiddle.net/Qh9X5/1318/
$(document).ready(function() {
(function( $ ){
var methods = {
el: "",
init : function(options) {
var clone = jQuery.extend(true, {}, options["data"]);
methods.el = this;
methods.setup(clone);
},
setup: function(dataset){
this.width = 300;
this.height = 300;
this.radius = Math.min(this.width, this.height) / 2;
this.color = d3.scale.category20();
this.pie = d3.layout.pie()
.sort(null);
this.arc = d3.svg.arc()
.innerRadius(this.radius - 100)
.outerRadius(this.radius - 50);
this.svg = d3.select(methods.el["selector"]).append("svg")
.attr("width", this.width)
.attr("height", this.height)
.append("g")
.attr("class", "piechart")
.attr("transform", "translate(" + this.width / 2 + "," + this.height / 2 + ")");
//this.update(dataset[0].segments);
},
oldPieData: "",
pieTween: function(d, i){
var that = this;
var theOldDataInPie = methods.oldPieData;
// Interpolate the arcs in data space
var s0;
var e0;
if(theOldDataInPie[i]){
s0 = theOldDataInPie[i].startAngle;
e0 = theOldDataInPie[i].endAngle;
} else if (!(theOldDataInPie[i]) && theOldDataInPie[i-1]) {
s0 = theOldDataInPie[i-1].endAngle;
e0 = theOldDataInPie[i-1].endAngle;
} else if(!(theOldDataInPie[i-1]) && theOldDataInPie.length > 0){
s0 = theOldDataInPie[theOldDataInPie.length-1].endAngle;
e0 = theOldDataInPie[theOldDataInPie.length-1].endAngle;
} else {
s0 = 0;
e0 = 0;
}
var i = d3.interpolate({startAngle: s0, endAngle: e0}, {startAngle: d.startAngle, endAngle: d.endAngle});
return function(t) {
var b = i(t);
return methods.arc(b);
};
},
removePieTween: function(d, i) {
var that = this;
s0 = 2 * Math.PI;
e0 = 2 * Math.PI;
var i = d3.interpolate({startAngle: d.startAngle, endAngle: d.endAngle}, {startAngle: s0, endAngle: e0});
return function(t) {
var b = i(t);
return methods.arc(b);
};
},
update: function(dataSet){
var that = this;
methods.el = this;
methods.svg = d3.select(methods.el["selector"] + " .piechart");
this.piedata = methods.pie(dataSet);
//__slices
this.path = methods.svg.selectAll("path.pie")
.data(this.piedata);
this.path.enter().append("path")
.attr("class", "pie")
.attr("fill", function(d, i) {
return methods.color(i);
})
.transition()
.duration(300)
.attrTween("d", methods.pieTween);
this.path
.transition()
.duration(300)
.attrTween("d", methods.pieTween);
this.path.exit()
.transition()
.duration(300)
.attrTween("d", methods.removePieTween)
.remove();
//__slices
//__labels
var labels = methods.svg.selectAll("text")
.data(this.piedata);
labels.enter()
.append("text")
.attr("text-anchor", "middle")
labels
.attr("x", function(d) {
var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2;
d.cx = Math.cos(a) * (methods.radius - 75);
return d.x = Math.cos(a) * (methods.radius - 20);
})
.attr("y", function(d) {
var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2;
d.cy = Math.sin(a) * (methods.radius - 75);
return d.y = Math.sin(a) * (methods.radius - 20);
})
.text(function(d) {
return d.value;
})
.each(function(d) {
var bbox = this.getBBox();
d.sx = d.x - bbox.width/2 - 2;
d.ox = d.x + bbox.width/2 + 2;
d.sy = d.oy = d.y + 5;
})
.transition()
.duration(300)
labels
.transition()
.duration(300)
labels.exit()
.transition()
.duration(300)
//__labels
//__pointers
methods.svg.append("defs").append("marker")
.attr("id", "circ")
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("refX", 3)
.attr("refY", 3)
.append("circle")
.attr("cx", 3)
.attr("cy", 3)
.attr("r", 3);
var pointers = methods.svg.selectAll("path.pointer")
.data(this.piedata);
pointers.enter()
.append("path")
.attr("class", "pointer")
.style("fill", "none")
.style("stroke", "black")
.attr("marker-end", "url(#circ)");
pointers
.attr("d", function(d) {
if(d.cx > d.ox) {
return "M" + d.sx + "," + d.sy + "L" + d.ox + "," + d.oy + " " + d.cx + "," + d.cy;
} else {
return "M" + d.ox + "," + d.oy + "L" + d.sx + "," + d.sy + " " + d.cx + "," + d.cy;
}
})
.transition()
.duration(300)
pointers
.transition()
.duration(300)
pointers.exit()
.transition()
.duration(300)
//__pointers
this.oldPieData = this.piedata;
}
};
$.fn.piechart = function(methodOrOptions) {
if ( methods[methodOrOptions] ) {
return methods[ methodOrOptions ].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof methodOrOptions === 'object' || ! methodOrOptions ) {
// Default to "init"
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + methodOrOptions + ' does not exist' );
}
};
})(jQuery);
var dataCharts = [
{
"data": [
{
"segments": [
53245, 28479, 19697, 24037, 40245
]
}
]
},
{
"data": [
{
"segments": [
855, 79, 97, 237, 245
]
}
]
},
{
"data": [
{
"segments": [
22, 79, 97, 12, 245
]
}
]
},
{
"data": [
{
"segments": [
122, 279, 197, 312, 545
]
}
]
}
];
var clone = jQuery.extend(true, {}, dataCharts);
//__invoke concentric
$('[data-role="piechart"]').each(function(index) {
var selector = "piechart"+index;
$(this).attr("id", selector);
var options = {
data: clone[0].data
}
$("#"+selector).piechart(options);
$("#"+selector).piechart('update', clone[0].data[0].segments);
});
$(".testers a").on( "click", function(e) {
e.preventDefault();
var clone = jQuery.extend(true, {}, dataCharts);
var min = 0;
var max = 3;
//__invoke pie chart
$('[data-role="piechart"]').each(function(index) {
pos = Math.floor(Math.random() * (max - min + 1)) + min;
$("#"+$(this).attr("id")).piechart('update', clone[pos].data[0].segments);
});
});
});

To conclude I've wrapped the very latest code for this in a jquery plugin. Its now possible to develop multiple pie charts with these labels.
LATEST CODE - ** http://jsfiddle.net/Qh9X5/1336/ - removes label properly on exit.
$(document).ready(function() {
(function( $ ){
var methods = {
el: "",
init : function(options) {
var clone = jQuery.extend(true, {}, options["data"]);
methods.el = this;
methods.setup(clone, options["width"], options["height"], options["r"], options["ir"]);
},
getArc: function(radius, innerradius){
var arc = d3.svg.arc()
.innerRadius(innerradius)
.outerRadius(radius);
return arc;
},
setup: function(dataset, w, h, r, ir){
var padding = 80;
this.width = w;
this.height = h;
this.radius = r
this.innerradius = ir;
this.color = d3.scale.category20();
this.pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d.total; });
this.arc = this.getArc(this.radius, this.innerradius);
this.svg = d3.select(methods.el["selector"]).append("svg")
.attr("width", this.width + padding)
.attr("height", this.height + padding)
.append("g")
.attr("class", "piechart")
.attr("transform", "translate(" + ((this.width/2) + (padding/2)) + "," + ((this.height/2) + (padding/2)) + ")");
this.segments = this.svg.append("g")
.attr("class", "segments");
this.labels = this.svg.append("g")
.attr("class", "labels");
this.pointers = this.svg.append("g")
.attr("class", "pointers");
},
oldPieData: "",
pieTween: function(r, ir, d, i){
var that = this;
var theOldDataInPie = methods.oldPieData;
// Interpolate the arcs in data space
var s0;
var e0;
if(theOldDataInPie[i]){
s0 = theOldDataInPie[i].startAngle;
e0 = theOldDataInPie[i].endAngle;
} else if (!(theOldDataInPie[i]) && theOldDataInPie[i-1]) {
s0 = theOldDataInPie[i-1].endAngle;
e0 = theOldDataInPie[i-1].endAngle;
} else if(!(theOldDataInPie[i-1]) && theOldDataInPie.length > 0){
s0 = theOldDataInPie[theOldDataInPie.length-1].endAngle;
e0 = theOldDataInPie[theOldDataInPie.length-1].endAngle;
} else {
s0 = 0;
e0 = 0;
}
var i = d3.interpolate({startAngle: s0, endAngle: e0}, {startAngle: d.startAngle, endAngle: d.endAngle});
return function(t) {
var b = i(t);
return methods.getArc(r, ir)(b);
};
},
removePieTween: function(r, ir, d, i) {
var that = this;
s0 = 2 * Math.PI;
e0 = 2 * Math.PI;
var i = d3.interpolate({startAngle: d.startAngle, endAngle: d.endAngle}, {startAngle: s0, endAngle: e0});
return function(t) {
var b = i(t);
return methods.getArc(r, ir)(b);
};
},
update: function(dataSet){
var that = this;
methods.el = this;
var r = $(methods.el["selector"]).data("r");
var ir = $(methods.el["selector"]).data("ir");
methods.svg = d3.select(methods.el["selector"] + " .piechart");
methods.segments = d3.select(methods.el["selector"] + " .segments");
methods.labels = d3.select(methods.el["selector"] + " .labels");
methods.pointers = d3.select(methods.el["selector"] + " .pointers");
dataSet.forEach(function(d) {
d.total = +d.value;
});
this.piedata = methods.pie(dataSet);
//__slices
this.path = methods.segments.selectAll("path.pie")
.data(this.piedata);
this.path.enter().append("path")
.attr("class", "pie")
.attr("fill", function(d, i) {
return methods.color(i);
})
.transition()
.duration(300)
.attrTween("d", function(d, i) {
return methods.pieTween(r, ir, d, i);
});
this.path
.transition()
.duration(300)
.attrTween("d", function(d, i) {
return methods.pieTween(r, ir, d, i);
});
this.path.exit()
.transition()
.duration(300)
.attrTween("d", function(d, i) {
return methods.removePieTween(r, ir, d, i);
})
.remove();
//__slices
//__labels
var labels = methods.labels.selectAll("text")
.data(this.piedata);
labels.enter()
.append("text")
.attr("text-anchor", "middle")
labels
.attr("x", function(d) {
var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2;
d.cx = Math.cos(a) * (ir+((r-ir)/2));
return d.x = Math.cos(a) * (r + 20);
})
.attr("y", function(d) {
var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2;
d.cy = Math.sin(a) * (ir+((r-ir)/2));
return d.y = Math.sin(a) * (r + 20);
})
.text(function(d) {
return d.data.label;
})
.each(function(d) {
var bbox = this.getBBox();
d.sx = d.x - bbox.width/2 - 2;
d.ox = d.x + bbox.width/2 + 2;
d.sy = d.oy = d.y + 5;
})
.transition()
.duration(300)
labels
.transition()
.duration(300)
labels.exit()
.transition()
.duration(300)
//__labels
//__pointers
methods.pointers.append("defs").append("marker")
.attr("id", "circ")
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("refX", 3)
.attr("refY", 3)
.append("circle")
.attr("cx", 3)
.attr("cy", 3)
.attr("r", 3);
var pointers = methods.pointers.selectAll("path.pointer")
.data(this.piedata);
pointers.enter()
.append("path")
.attr("class", "pointer")
.style("fill", "none")
.style("stroke", "black")
.attr("marker-end", "url(#circ)");
pointers
.attr("d", function(d) {
if(d.cx > d.ox) {
return "M" + d.sx + "," + d.sy + "L" + d.ox + "," + d.oy + " " + d.cx + "," + d.cy;
} else {
return "M" + d.ox + "," + d.oy + "L" + d.sx + "," + d.sy + " " + d.cx + "," + d.cy;
}
})
.transition()
.duration(300)
pointers
.transition()
.duration(300)
pointers.exit()
.transition()
.duration(300)
//__pointers
this.oldPieData = this.piedata;
}
};
$.fn.piechart = function(methodOrOptions) {
if ( methods[methodOrOptions] ) {
return methods[ methodOrOptions ].apply( this, Array.prototype.slice.call( arguments, 1 ));
} else if ( typeof methodOrOptions === 'object' || ! methodOrOptions ) {
// Default to "init"
return methods.init.apply( this, arguments );
} else {
$.error( 'Method ' + methodOrOptions + ' does not exist' );
}
};
})(jQuery);
var dataCharts = [
{
"data": [
{
"segments": [
{
"label": "apple",
"value": 53245
},
{
"label": "cherry",
"value": 145
},
{
"label": "pear",
"value": 2245
},
{
"label": "bananana",
"value": 15325
}
]
}
]
},
{
"data": [
{
"segments": [
{
"label": "milk",
"value": 532
},
{
"label": "cheese",
"value": 145
},
{
"label": "grapes",
"value": 22
}
]
}
]
},
{
"data": [
{
"segments": [
{
"label": "pineapple",
"value": 1532
},
{
"label": "orange",
"value": 1435
},
{
"label": "grapes",
"value": 22
}
]
}
]
},
{
"data": [
{
"segments": [
{
"label": "lemons",
"value": 133
},
{
"label": "mango",
"value": 435
},
{
"label": "melon",
"value": 2122
}
]
}
]
}
];
var clone = jQuery.extend(true, {}, dataCharts);
//__invoke concentric
$('[data-role="piechart"]').each(function(index) {
var selector = "piechart"+index;
$(this).attr("id", selector);
var options = {
data: clone[0].data,
width: $(this).data("width"),
height: $(this).data("height"),
r: $(this).data("r"),
ir: $(this).data("ir")
}
$("#"+selector).piechart(options);
$("#"+selector).piechart('update', clone[0].data[0].segments);
});
$(".testers a").on( "click", function(e) {
e.preventDefault();
var clone = jQuery.extend(true, {}, dataCharts);
var min = 0;
var max = 3;
//__invoke pie chart
$('[data-role="piechart"]').each(function(index) {
pos = Math.floor(Math.random() * (max - min + 1)) + min;
$("#"+$(this).attr("id")).piechart('update', clone[pos].data[0].segments);
});
});
});

D3: Rotating labels in the third and fourth quad in sunburst example

I am using D3 and javascript for the first time to draw sunburst, following examples at http://bl.ocks.org/mbostock/ and http://bl.ocks.org/mbostock/4063423. The labels in the thirsd and fourth quads are upside down. I found coffee wheel example here http://www.jasondavies.com/coffee-wheel/ and tried to incorporate in my example but was unsuccessful in rotating the labels. I did found a similar post here How to properly rotate text labels in a D3 sunburst diagram, but was unable to solve the issue as one of the link is not working.
<!DOCTYPE html>
<meta charset="utf-8">
<style>
path {
stroke: #fff;
fill-rule: evenodd;
}
text {
font-family: Arial, sans-serif;
font-size: 12px;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var width = 1600,
height = 1300,
radius = Math.min(width, height) / 2;
var x = d3.scale.linear()
.range([0, 2 * Math.PI]);
var y = d3.scale.linear()
.range([0, radius]);
var color = d3.scale.category20c();
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + (height / 2 + 10) + ")");
var partition = d3.layout.partition()
.value(function(d) { return d.size; });
var arc = d3.svg.arc()
.startAngle(function(d) { return Math.max(0, Math.min(2 * Math.PI, x(d.x))); })
.endAngle(function(d) { return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx))); })
.innerRadius(function(d) { return Math.max(0, y(d.y)); })
.outerRadius(function(d) { return Math.max(0, y(d.y + d.dy)); });
d3.json("ex.json", function(error, root) {
var g = svg.selectAll("g")
.data(partition.nodes(root))
.enter().append("g");
var path = g.append("path")
.attr("d", arc)
.style("fill", function(d) { return color((d.children ? d : d.parent).name); })
.on("click", click);
var text = g.append("text")
.attr("transform", function(d) { return "rotate(" + computeTextRotation(d) + ")"; })
.attr("x", function(d) { return y(d.y); })
.attr("dx", "6") // margin
.attr("dy", ".35em") // vertical-align
.text(function(d) { return d.name; });
function click(d) {
// fade out all text elements
text.transition().attr("opacity", 0);
path.transition()
.duration(750)
.attrTween("d", arcTween(d))
.each("end", function(e, i) {
// check if the animated element's data e lies within the visible angle span given in d
if (e.x >= d.x && e.x < (d.x + d.dx)) {
// get a selection of the associated text element
var arcText = d3.select(this.parentNode).select("text");
// fade in the text element and recalculate positions
arcText.transition().duration(750)
.attr("opacity", 1)
.attr("transform", function() { return "rotate(" + computeTextRotation(e) + ")" })
.attr("x", function(d) { return y(d.y); });
}
});
}
});
d3.select(self.frameElement).style("height", height + "px");
// Interpolate the scales!
function arcTween(d) {
var xd = d3.interpolate(x.domain(), [d.x, d.x + d.dx]),
yd = d3.interpolate(y.domain(), [d.y, 1]),
yr = d3.interpolate(y.range(), [d.y ? 20 : 0, radius]);
return function(d, i) {
return i
? function(t) { return arc(d); }
: function(t) { x.domain(xd(t)); y.domain(yd(t)).range(yr(t)); return arc(d); };
};
}
function computeTextRotation(d) {
return (x(d.x + d.dx / 2) - Math.PI / 2) / Math.PI * 180;
}
</script>
ex.json
[{
"name": "aaa",
"size": 5000,
"children":
[
{
"name": "aaab",
"size": 2952,
"children": [
{"name": "xxx", "size": 45},
{"name": "xxy", "size": 29},
{"name": "xxz", "size": 28},
{"name": "xxa", "size": 4}
]
},
{
"name": "aaac",
"size": 251,
"children": [
{
"name": "ddd",
"size": 7,
"children": [
{"name": "ppp", "size": 4},
{"name": "qqq", "size": 2}
]
},
{"name": "xxt", "size": 4},
{"name": "xxu", "size": 1},
{"name": "xxv", "size": 1}
]
},
{"name": "aaad","size": 222}
]
}][1]

Change your computeTextRotation function to the following:
function computeTextRotation(d) {
var ang = (x(d.x + d.dx / 2) - Math.PI / 2) / Math.PI * 180;
return (ang > 90) ? 180 + ang : ang;
}
And set the point of rotation to be the position of centroid of the respective arc:
var text = g.append("text")
.attr("transform", function(d) { return "translate(" + arc.centroid(d) + ")rotate(" + computeTextRotation(d) + ")"; })
.attr('text-anchor', function (d) { return computeTextRotation(d) > 180 ? "end" : "start"; })
.attr("dx", "6") // margin
.attr("dy", ".35em") // vertical-align
.text(function(d) { return d.name; });
Example: http://jsfiddle.net/Hm49x/
With your data: http://plnkr.co/edit/tct95toQ2IjyUkQJQPB9?p=preview