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Storytelling with Chord Diagram
Raw
.block
height: 750
Raw
README.md

The "Storytelling with Data" version of a Chord Diagram about the Switching Behavior between Phone Brands as used in my blog on Using Data Storytelling with a Chord Diagram. It aims to explain how to understand the visualization to someone who has never seen a Chord Diagram before

It shows the flows of people between the phone brand of their previous phone and the current phone, based on data from the Dutch respondents of the Global Mobile Consumer Survey held in 2014 by Deloitte

Raw
chords.js
/*//////////////////////////////////////////////////////////
////////////////// Set up the Data /////////////////////////
//////////////////////////////////////////////////////////*/
var NameProvider = ["Apple","HTC","Huawei","LG","Nokia","Samsung","Sony","Other"];
var matrix = [
[9.6899,0.8859,0.0554,0.443,2.5471,2.4363,0.5537,2.5471], /*Apple 19.1584*/
[0.1107,1.8272,0,0.4983,1.1074,1.052,0.2215,0.4983], /*HTC 5.3154*/
[0.0554,0.2769,0.2215,0.2215,0.3876,0.8306,0.0554,0.3322], /*Huawei 2.3811*/
[0.0554,0.1107,0.0554,1.2182,1.1628,0.6645,0.4983,1.052], /*LG 4.8173*/
[0.2215,0.443,0,0.2769,10.4097,1.2182,0.4983,2.8239], /*Nokia 15.8915*/
[1.1628,2.6024,0,1.3843,8.7486,16.8328,1.7165,5.5925], /*Samsung 38.0399*/
[0.0554,0.4983,0,0.3322,0.443,0.8859,1.7719,0.443], /*Sony 4.4297*/
[0.2215,0.7198,0,0.3322,1.6611,1.495,0.1107,5.4264] /*Other 9.9667*/
];
/*Sums up to exactly 100*/
var colors = ["#C4C4C4","#69B40F","#EC1D25","#C8125C","#008FC8","#10218B","#134B24","#737373"];
/*Initiate the color scale*/
var fill = d3.scale.ordinal()
.domain(d3.range(NameProvider.length))
.range(colors);
/*//////////////////////////////////////////////////////////
/////////////// Initiate Chord Diagram /////////////////////
//////////////////////////////////////////////////////////*/
var margin = {top: 30, right: 25, bottom: 20, left: 25},
width = 650 - margin.left - margin.right,
height = 600 - margin.top - margin.bottom,
innerRadius = Math.min(width, height) * .39,
outerRadius = innerRadius * 1.04;
/*Initiate the SVG*/
var svg = d3.select("#chart").append("svg:svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("svg:g")
.attr("transform", "translate(" + (margin.left + width/2) + "," + (margin.top + height/2) + ")");
var chord = d3.layout.chord()
.padding(.04)
.sortSubgroups(d3.descending) /*sort the chords inside an arc from high to low*/
.sortChords(d3.descending) /*which chord should be shown on top when chords cross. Now the biggest chord is at the bottom*/
.matrix(matrix);
/*//////////////////////////////////////////////////////////
////////////////// Draw outer Arcs /////////////////////////
//////////////////////////////////////////////////////////*/
var arc = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius);
var g = svg.selectAll("g.group")
.data(chord.groups)
.enter().append("svg:g")
.attr("class", function(d) {return "group " + NameProvider[d.index];});
g.append("svg:path")
.attr("class", "arc")
.style("stroke", function(d) { return fill(d.index); })
.style("fill", function(d) { return fill(d.index); })
.attr("d", arc)
.style("opacity", 0)
.transition().duration(1000)
.style("opacity", 0.4);
/*//////////////////////////////////////////////////////////
////////////////// Initiate Ticks //////////////////////////
//////////////////////////////////////////////////////////*/
var ticks = svg.selectAll("g.group").append("svg:g")
.attr("class", function(d) {return "ticks " + NameProvider[d.index];})
.selectAll("g.ticks")
.attr("class", "ticks")
.data(groupTicks)
.enter().append("svg:g")
.attr("transform", function(d) {
return "rotate(" + (d.angle * 180 / Math.PI - 90) + ")"
+ "translate(" + outerRadius+40 + ",0)";
});
/*Append the tick around the arcs*/
ticks.append("svg:line")
.attr("x1", 1)
.attr("y1", 0)
.attr("x2", 5)
.attr("y2", 0)
.attr("class", "ticks")
.style("stroke", "#FFF");
/*Add the labels for the %'s*/
ticks.append("svg:text")
.attr("x", 8)
.attr("dy", ".35em")
.attr("class", "tickLabels")
.attr("transform", function(d) { return d.angle > Math.PI ? "rotate(180)translate(-16)" : null; })
.style("text-anchor", function(d) { return d.angle > Math.PI ? "end" : null; })
.text(function(d) { return d.label; })
.attr('opacity', 0);
/*//////////////////////////////////////////////////////////
////////////////// Initiate Names //////////////////////////
//////////////////////////////////////////////////////////*/
g.append("svg:text")
.each(function(d) { d.angle = (d.startAngle + d.endAngle) / 2; })
.attr("dy", ".35em")
.attr("class", "titles")
.attr("text-anchor", function(d) { return d.angle > Math.PI ? "end" : null; })
.attr("transform", function(d) {
return "rotate(" + (d.angle * 180 / Math.PI - 90) + ")"
+ "translate(" + (innerRadius + 55) + ")"
+ (d.angle > Math.PI ? "rotate(180)" : "");
})
.attr('opacity', 0)
.text(function(d,i) { return NameProvider[i]; });
/*//////////////////////////////////////////////////////////
//////////////// Initiate inner chords /////////////////////
//////////////////////////////////////////////////////////*/
var chords = svg.selectAll("path.chord")
.data(chord.chords)
.enter().append("svg:path")
.attr("class", "chord")
.style("stroke", function(d) { return d3.rgb(fill(d.source.index)).darker(); })
.style("fill", function(d) { return fill(d.source.index); })
.attr("d", d3.svg.chord().radius(innerRadius))
.attr('opacity', 0);
/*//////////////////////////////////////////////////////////
///////////// Initiate Progress Bar ////////////////////////
//////////////////////////////////////////////////////////*/
/*Initiate variables for bar*/
var progressColor = ["#D1D1D1","#949494"],
progressClass = ["prgsBehind","prgsFront"],
prgsWidth = 0.4*650,
prgsHeight = 3;
/*Create SVG to visualize bar in*/
var progressBar = d3.select("#progress").append("svg")
.attr("width", prgsWidth)
.attr("height", 3*prgsHeight);
/*Create two bars of which one has a width of zero*/
progressBar.selectAll("rect")
.data([prgsWidth, 0])
.enter()
.append("rect")
.attr("class", function(d,i) {return progressClass[i];})
.attr("x", 0)
.attr("y", 0)
.attr("width", function (d) {return d;})
.attr("height", prgsHeight)
.attr("fill", function(d,i) {return progressColor[i];});
/*//////////////////////////////////////////////////////////
/////////// Initiate the Center Texts //////////////////////
//////////////////////////////////////////////////////////*/
/*Create wrapper for center text*/
var textCenter = svg.append("g")
.attr("class", "explanationWrapper");
/*Starting text middle top*/
var middleTextTop = textCenter.append("text")
.attr("class", "explanation")
.attr("text-anchor", "middle")
.attr("x", 0 + "px")
.attr("y", -24*10/2 + "px")
.attr("dy", "1em")
.attr("opacity", 1)
.text("For the Dutch version of the Deloitte Global Mobile Consumer Survey, Deloitte asked 2000 residents of the Netherlands about their mobile phone behavior")
.call(wrap, 350);
/*Starting text middle bottom*/
var middleTextBottom = textCenter.append("text")
.attr("class", "explanation")
.attr("text-anchor", "middle")
.attr("x", 0 + "px")
.attr("y", 24*3/2 + "px")
.attr("dy", "1em")
.attr('opacity', 1)
.text("The respondents gave us information about the brand of their current main phone, and the brand of their previous main phone")
.call(wrap, 350);
/*//////////////////////////////////////////////////////////
//////////////// Storyboarding Steps ///////////////////////
//////////////////////////////////////////////////////////*/
var counter = 1,
buttonTexts = ["Ok","Go on","Continue","Okay","Go on","Continue","Okay","Continue",
"Continue","Continue","Continue","Continue","Continue","Finish"],
opacityValueBase = 0.8,
opacityValue = 0.4;
/*Reload page*/
d3.select("#reset")
.on("click", function(e) {location.reload();});
/*Skip to final visual right away*/
d3.select("#skip")
.on("click", finalChord);
/*Order of steps when clicking button*/
d3.select("#clicker")
.on("click", function(e){
if(counter == 1) Draw1();
else if(counter == 2) Draw2();
else if(counter == 3) Draw3();
else if(counter == 4) Draw4();
else if(counter == 5) Draw5();
else if(counter == 6) Draw6();
else if(counter == 7) Draw7();
else if(counter == 8) Draw8();
else if(counter == 9) Draw9();
else if(counter == 10) Draw10();
else if(counter == 11) Draw11();
else if(counter == 12) Draw12();
else if(counter == 13) Draw13();
else if(counter == 14) Draw14();
else if(counter == 15) finalChord();
counter = counter + 1;
});
/*//////////////////////////////////////////////////////////
//Introduction
///////////////////////////////////////////////////////////*/
function Draw1(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*11);
changeTopText(newText = "These days most people switch phones every few years. " +
"Some people stay loyal, but many also switch to a different phone brand...",
loc = 4/2, delayDisappear = 0, delayAppear = 1);
changeTopText(newText = "In the next few steps I would like to introduce you to the flows of people between the phone brands ",
loc = 8/2, delayDisappear = 9, delayAppear = 10, finalText = true);
changeBottomText(newText = "Let's start by drawing out the division of the 1846 respondents, that have had at least 2 phones, among the biggest 7 brands ",
loc = 1/2, delayDisappear = 0, delayAppear = 10);
//Remove arcs again
d3.selectAll(".arc")
.transition().delay(9*700).duration(2100)
.style("opacity", 0)
.each("end", function() {d3.selectAll(".arc").remove();});
};/*Draw1*/
/*//////////////////////////////////////////////////////////
//Show Arc of Apple
//////////////////////////////////////////////////////////*/
function Draw2(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*2);
/*Initiate all arcs but only show the Apple arc (d.index = 0)*/
g.append("svg:path")
.style("stroke", function(d) { return fill(d.index); })
.style("fill", function(d) { return fill(d.index); })
.transition().duration(700)
.attr("d", arc)
.attrTween("d", function(d) {
if(d.index == 0) {
var i = d3.interpolate(d.startAngle, d.endAngle);
return function(t) {
d.endAngle = i(t);
return arc(d);
}
}
});
/*Show the tick around the Apple arc*/
d3.selectAll("g.group").selectAll("line")
.transition().delay(700).duration(1000)
.style("stroke", function(d, i, j) {return j ? 0 : "#000"; });
/*Add the labels for the %'s at Apple*/
d3.selectAll("g.group").selectAll(".tickLabels")
.transition().delay(700).duration(2000)
.attr("opacity", function(d, i, j) {return j ? 0 : 1; });
/*Show the Apple name*/
d3.selectAll(".titles")
.transition().duration(2000)
.attr("opacity", function(d, i) {return d.index ? 0 : 1; });
/*Switch text*/
changeTopText(newText = "According to the survey 19% owns an iPhone as their main phone",
loc = 1/2, delayDisappear = 0, delayAppear = 1, finalText = true);
changeBottomText(newText = "",
loc = 0/2, delayDisappear = 0, delayAppear = 1) ;
};/*Draw2*/
/*///////////////////////////////////////////////////////////
//Draw the other arcs as well
//////////////////////////////////////////////////////////*/
function Draw3(){
/*First disable click event on clicker button*/
stopClicker();
var arcDelay = [0,1,2,12,13,23,33,34,35,40,47];
/*Show and run the progressBar*/
runProgressBar(time=700*(arcDelay[(arcDelay.length-1)]+1));
/*Fill in the other arcs*/
svg.selectAll("g.group").select("path")
.transition().delay(function(d, i) { return 700*arcDelay[i];}).duration(1000)
.attrTween("d", function(d) {
if(d.index != 0) {
var i = d3.interpolate(d.startAngle, d.endAngle);
return function(t) {
d.endAngle = i(t);
return arc(d);
}
}
});
/*Make the other strokes black as well*/
svg.selectAll("g.group")
.transition().delay(function(d,i) { return 700*arcDelay[i]; }).duration(700)
.selectAll("g").selectAll("line").style("stroke", "#000");
/*Same for the %'s*/
svg.selectAll("g.group")
.transition().delay(function(d,i) { return 700*arcDelay[i]; }).duration(700)
.selectAll("g").selectAll("text").style("opacity", 1);
/*And the Names of each Arc*/
svg.selectAll("g.group")
.transition().delay(function(d,i) { return 700*arcDelay[i]; }).duration(700)
.selectAll("text").style("opacity", 1);
/*Change the text of the top section inside the circle accordingly*/
/*HTC*/
changeTopText(newText = "HTC has 5% of the market share",
loc = 6/2, delayDisappear = 0, delayAppear = arcDelay[2]);
/*LG*/
changeTopText(newText = "LG has almost 5% of the market",
loc = 6/2, delayDisappear = arcDelay[3], delayAppear = arcDelay[4]);
/*Samsung*/
changeTopText(newText = "Samsung has the biggest share by far, with 38% of respondents using a Samsung as their main phone",
loc = 3/2, delayDisappear = (arcDelay[5]-1), delayAppear = arcDelay[5]);
/*Sony*/
changeTopText(newText = "Sony has slightly more than 4% share",
loc = 4/2, delayDisappear = arcDelay[6], delayAppear = (arcDelay[8]-1));
/*100%*/
changeTopText(newText = "Together that sums up to 100%",
loc = 1/2, delayDisappear = (arcDelay[9]-1), delayAppear = arcDelay[9]);
/*Chord intro*/
changeTopText(newText = "This circle shows how the respondents are currently divided between the brands",
loc = 8/2, delayDisappear = (arcDelay[10]-1), delayAppear = arcDelay[10], finalText = true);
/*Change the text of the bottom section inside the circle accordingly*/
/*Huawei*/
changeBottomText(newText = "Huawei came from practically no share in 2013 to 2.4% in 2014 thereby taking its place in the biggest 7 brands in the Netherlands",
loc = -2/2, delayDisappear = 0, delayAppear = arcDelay[2]);
/*Nokia*/
changeBottomText(newText = "Nokia is still owned by 15% of the respondents. However practically all of these phones are ordinary phones, not smartphones",
loc = -1/2, delayDisappear = arcDelay[3], delayAppear = arcDelay[4]);
/*Other*/
changeBottomText(newText = "Brands combined in \"Other\" are Blackberry, Motorola, Google Nexus and Operator branded",
loc = -1/2, delayDisappear = (arcDelay[5]-1), delayAppear = (arcDelay[8]-1));
/*Chord intro*/
changeBottomText(newText = "Now we're going to look at how these respondents flowed from their previous phone to their present one",
loc = 1/2, delayDisappear = (arcDelay[9]-1), delayAppear = arcDelay[10]);
};/*Draw3*/
/*///////////////////////////////////////////////////////////
//Show the chord between Samsung and Nokia
//////////////////////////////////////////////////////////*/
function Draw4(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*2);
/*Samsung and Nokia intro text*/
changeTopText(newText = "First, let's only look at the respondents that now own a Samsung, but whose previous phone was a Nokia and vice versa",
loc = 5, delayDisappear = 0, delayAppear = 1, finalText = true);
/*Bottom text disappear*/
changeBottomText(newText = "",
loc = 0, delayDisappear = 0, delayAppear = 1);
/*Make the non Samsung & Nokia arcs less visible*/
svg.selectAll("g.group").select("path")
.transition().duration(1000)
.style("opacity", function(d) {
if(d.index != 4 && d.index != 5) {return opacityValue;}
});
/*Make the other strokes less visible*/
d3.selectAll("g.group").selectAll("line")
.transition().duration(700)
.style("stroke",function(d,i,j) {if (j == 5 || j == 4) {return "#000";} else {return "#DBDBDB";}});
/*Same for the %'s*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".tickLabels").style("opacity",function(d,i,j) {if (j == 5 || j == 4) {return 1;} else {return opacityValue;}});
/*And the Names of each Arc*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".titles").style("opacity", function(d) { if(d.index == 4 || d.index == 5) {return 1;} else {return opacityValue;}});
/*Show only the Samsung Nokia chord*/
chords.transition().duration(2000)
.attr("opacity", function(d, i) {
if(d.source.index == 5 && d.target.index == 4)
{return opacityValueBase;}
else {return 0;}
});
};/*Draw4*/
/*//////////////////////////////////////////////////////////////////////////*/
function Draw5(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*2);
/*Samsung and Nokia text*/
changeTopText(newText = "On the left, touching the arc of Samsung, we can see that the chord runs from 17% to almost 26%. Which is a thickness spanning 9%",
loc = 5, delayDisappear = 0, delayAppear = 1, finalText = true);
/*Make the non Samsung & Nokia arcs less visible*/
svg.selectAll("g.group").select("path")
.transition().duration(1000)
.style("opacity", opacityValue);
/*Show only the Samsung Nokia part at Samsung*/
var arcSamsung = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius)
.startAngle(4.040082626337902)
.endAngle(4.561777856121815);
svg.append("path")
.attr("class","SamsungToNokiaArc")
.attr("d", arcSamsung)
.attr("fill", colors[5])
.style('stroke', colors[5]);
repeat();
/*Repeatedly let an arc change colour*/
function repeat() {
d3.selectAll(".SamsungToNokiaArc")
.transition().duration(700)
.attr("fill", "#9FA6D0")
.style('stroke', "#9FA6D0")
.transition().duration(700)
.attr("fill", colors[5])
.style('stroke', colors[5])
.each("end", repeat)
;
};
};/*Draw5*/
/*//////////////////////////////////////////////////////////////////////////*/
function Draw6(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*2);
/*Samsung and Nokia text*/
changeTopText(newText = "These 9% of the respondents now own a Samsung and by following the chord we can see what brand they used to own, which in this case, is Nokia",
loc = 5, delayDisappear = 0, delayAppear = 1, finalText = true);
/*Show only the Samsung Nokia part at Nokia*/
var arcNokia = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius)
.startAngle(2.837816067671451)
.endAngle(2.9104595910835127);
svg.append("path")
.attr("class","NokiaToSamsungArc")
.attr("d", arcNokia)
.attr("opacity", 0)
.attr("fill", colors[4])
.transition().duration(700)
.attr("opacity", 1)
.attr("stroke", colors[4]);
};/*Draw6*/
/*//////////////////////////////////////////////////////////////////////////*/
function Draw7(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*11);
/*Samsung and Nokia text*/
changeTopText(newText = "At the Nokia side, the arc is much thinner, only spanning 1.2% (of respondents)",
loc = 4, delayDisappear = 0, delayAppear = 1);
changeTopText(newText = "These 1.2% now own a Nokia, but by following the chord we can see that they had a Samsung before",
loc = 4, delayDisappear = 9, delayAppear = 10, finalText = true);
/*Stop the color changing on the Samsung side*/
d3.selectAll(".SamsungToNokiaArc")
.transition().duration(700)
.attr("fill", colors[5])
.style("stroke", colors[5]);
/*Repeatedly let an arc change colour*/
repeat();
function repeat() {
d3.selectAll(".NokiaToSamsungArc")
.transition().duration(700)
.attr("fill", "#99D2E9")
.style('stroke', "#99D2E9")
.transition().duration(700)
.attr("fill", colors[4])
.style("stroke", colors[4])
.each("end", repeat)
;
};
};/*Draw7*/
/*//////////////////////////////////////////////////////////////////////////*/
function Draw8(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*11);
/*Samsung and Nokia text*/
changeTopText(newText = "Since the chord is much wider at the Samsung side, Samsung has taken a lot more clients from Nokia than Nokia managed to take from Samsung",
loc = 5, delayDisappear = 0, delayAppear = 1);
changeTopText(newText = "Therefore, the chord is the color of Samsung blue, since Samsung has the net gain from the exchange of people between Nokia and Samsung",
loc = 5, delayDisappear = 9, delayAppear = 10, finalText = true);
/*Stop the colour changing on the Nokia side*/
d3.selectAll(".NokiaToSamsungArc")
.transition().duration(700)
.attr("fill", colors[4])
.style("stroke", colors[4]);
};/*Draw8*/
/*///////////////////////////////////////////////////////////
//Show Loyalty hills
//////////////////////////////////////////////////////////*/
function Draw9(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*20);
/*Samsung Loyal text*/
changeTopText(newText = "There are also people that stay loyal and did not switch brands between their previous and current phone",
loc = 4/2, delayDisappear = 0, delayAppear = 1, finalText = false, xloc=-50, w=300);
changeTopText(newText = "These loyal respondents are represented by the hills at each brand",
loc = 3/2, delayDisappear = 9, delayAppear = 10, finalText = false, xloc=-50, w=300);
changeTopText(newText = "You can also envision this as a chord beginning and ending on itself",
loc = 2/2, delayDisappear = 18, delayAppear = 19, finalText = true, xloc=-50, w=300);
/*Remove the arcs*/
d3.selectAll(".NokiaToSamsungArc")
.transition().duration(2000)
.attr("opacity", 0)
.each("end", function() {d3.selectAll(".NokiaToSamsungArc").remove();});
d3.selectAll(".SamsungToNokiaArc")
.transition().duration(2000)
.attr("opacity", 0)
.each("end", function() {d3.selectAll(".SamsungToNokiaArc").remove();});
/*Show only the loyal chords*/
chords.transition().duration(2000)
.attr("opacity", function(d, i) {
if(d.source.index == 0 && d.target.index == 0) {return opacityValueBase;}
else if(d.source.index == 1 && d.target.index == 1) {return opacityValueBase;}
else if(d.source.index == 2 && d.target.index == 2) {return opacityValueBase;}
else if(d.source.index == 3 && d.target.index == 3) {return opacityValueBase;}
else if(d.source.index == 4 && d.target.index == 4) {return opacityValueBase;}
else if(d.source.index == 5 && d.target.index == 5) {return opacityValueBase;}
else if(d.source.index == 6 && d.target.index == 6) {return opacityValueBase;}
else if(d.source.index == 7 && d.target.index == 7) {return opacityValueBase;}
else {return 0;}
});
/*Show all ticks and texts again*/
/*Ticks*/
d3.selectAll("g.group").selectAll("line")
.transition().duration(700)
.style("stroke", "#000");
/*Same for the %'s*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".tickLabels").style("opacity", 1);
/*And the Names of each Arc*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".titles").style("opacity", 1);
};/*Draw9*/
/*//////////////////////////////////////////////////////////////////////////*/
function Draw10(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*11);
changeTopText(newText = "10% of respondents have a Nokia right now, but also used to own a Nokia before that",
loc = 7/2, delayDisappear = 0, delayAppear = 1);
changeTopText(newText = "Seeing that currently Nokia is owned by almost 16% of respondents, this means "+
"that about 2/3 of current Nokia owners are people who stayed loyal",
loc = 7/2, delayDisappear = 9, delayAppear = 10, finalText = true);
/*Show only the Nokia Loyal arc*/
var arcNokia = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius)
.startAngle(2.048671976860533)
.endAngle(2.6694216777820063);
svg.append("path")
.attr("class","NokiaLoyalArc")
.attr("d", arcNokia)
.attr("opacity", 1)
.attr("stroke", colors[4])
.attr("fill", colors[4]);
/*Repeatedly let an arc change colour*/
repeat();
function repeat() {
d3.selectAll(".NokiaLoyalArc")
.transition().duration(700)
.attr("fill", "#99D2E9")
.style('stroke', "#99D2E9")
.transition().duration(700)
.attr("fill", colors[4])
.style("stroke", colors[4])
.each("end", repeat);
};
/*Show only the Nokia loyal chord*/
chords.transition().duration(2000)
.attr("opacity", function(d, i) {
if(d.source.index == 4 && d.target.index == 4) {return opacityValueBase;}
else {return 0;}
});
/*Make the other strokes less visible*/
d3.selectAll("g.group").selectAll("line")
.transition().duration(700)
.style("stroke",function(d,i,j) {if (j == 4) {return "#000";} else {return "#DBDBDB";}});
/*Same for the %'s*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".tickLabels").style("opacity",function(d,i,j) {if (j == 4) {return 1;} else {return opacityValue;}});
/*And the Names of each Arc*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".titles").style("opacity", function(d) { if(d.index == 4) {return 1;} else {return opacityValue;}});
};/*Draw10*/
/*//////////////////////////////////////////////////////////
//Show all chords that are connected to Apple
//////////////////////////////////////////////////////////*/
function Draw11(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*2);
changeTopText(newText = "Here are all the chords for those respondents that currently own "+
"an iPhone or that used to own an iPhone",
loc = 3/2, delayDisappear = 0, delayAppear = 1, finalText = true, xloc=-80, w=200);
/*Remove the Nokia arc*/
d3.selectAll(".NokiaLoyalArc")
.transition().duration(1000)
.attr("opacity", 0)
.each("end", function() {d3.selectAll(".NokiaLoyalArc").remove();});
/*Only show the chords of Apple*/
chords.transition().duration(2000)
.attr("opacity", function(d, i) {
if(d.source.index == 0 || d.target.index == 0) {return opacityValueBase;}
else {return 0;}
});
/*Highlight arc of Apple*/
svg.selectAll("g.group").select("path")
.transition().duration(2000)
.style("opacity", function(d) {
if(d.index != 0) {return opacityValue;}
});
/*Show only the ticks and text at Apple*/
/*Make the other strokes less visible*/
d3.selectAll("g.group").selectAll("line")
.transition().duration(700)
.style("stroke",function(d,i,j) {if (j == 0) {return "#000";} else {return "#DBDBDB";}});
/*Same for the %'s*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".tickLabels").style("opacity",function(d,i,j) {if (j == 0) {return 1;} else {return opacityValue;}});
/*And the Names of each Arc*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".titles").style("opacity", function(d) { if(d.index == 0) {return 1;} else {return opacityValue;}});
};/*Draw11*/
function Draw12(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*11);
changeTopText(newText = "One thing that stands out for Apple is that all chords connected to " +
"Apple are the color of the Apple arc: grey",
loc = 3/2, delayDisappear = 0, delayAppear = 1, finalText = false, xloc=-80, w=210);
changeTopText(newText = "This means that Apple has always had the net gain. " +
"They received more customers from other brands than they lost to them",
loc = 3/2, delayDisappear = 9, delayAppear = 10, finalText = true, xloc=-80, w=210);
};/*Draw12*/
function Draw13(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
runProgressBar(time=700*11);
changeTopText(newText = "Even more so, apart from the chord to Samsung, all other chords are extremely narrow at the other end from Apple",
loc = 3/2, delayDisappear = 0, delayAppear = 1, finalText = false, xloc=-80, w=200);
changeTopText(newText = "This means that Apple has lost virtually nobody to any other brand",
loc = 3/2, delayDisappear = 9, delayAppear = 10, finalText = true, xloc=-80, w=200);
/*Repeatedly let specific chords change colour*/
repeat();
function repeat() {
chords
.transition().duration(1000)
.style("opacity",function (d){
if(d.source.index == 0) {
if(d.target.index == 0 || d.target.index == 5) {return opacityValueBase;}
else {return 0.2;}
} else {return 0;}
})
.transition().duration(1000)
.style("opacity",function (d){
if(d.source.index == 0) {return opacityValueBase;}
else {return 0;}
})
.each("end", repeat);
};
};/*Draw13*/
function Draw14(){
/*First disable click event on clicker button*/
stopClicker();
/*Show and run the progressBar*/
/*runProgressBar(time=700*2);*/
changeTopText(newText = "Thank you for staying with me so far! After these examples I think you're absolutely " +
"ready to face the full impact of all chords simultaneously",
loc = 8/2, delayDisappear = 0, delayAppear = 1, finalText = true);
changeBottomText(newText = "I'm looking forward to hearing about the insights that you have discovered on your own",
loc = 3/2, delayDisappear = 0, delayAppear = 1);
/*Only show the chords of Apple*/
chords.transition().duration(1000)
.style("opacity", 0.1);
/*Hide all the text*/
d3.selectAll("g.group").selectAll("line")
.transition().duration(700)
.style("stroke","#DBDBDB");
/*Same for the %'s*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".tickLabels").style("opacity",0.4);
/*And the Names of each Arc*/
svg.selectAll("g.group")
.transition().duration(700)
.selectAll(".titles").style("opacity",0.4);
};/*Draw14*/
/*///////////////////////////////////////////////////////////
//Draw the original Chord diagram
///////////////////////////////////////////////////////////*/
/*Go to the final bit*/
function finalChord() {
/*Remove button*/
d3.select("#clicker")
.style("visibility", "hidden");
d3.select("#skip")
.style("visibility", "hidden");
d3.select("#progress")
.style("visibility", "hidden");
/*Remove texts*/
changeTopText(newText = "",
loc = 0, delayDisappear = 0, delayAppear = 1);
changeBottomText(newText = "",
loc = 0, delayDisappear = 0, delayAppear = 1);
/*Create arcs or show them, depending on the point in the visual*/
if (counter <= 4 ) {
g.append("svg:path")
.style("stroke", function(d) { return fill(d.index); })
.style("fill", function(d) { return fill(d.index); })
.attr("d", arc)
.style("opacity", 0)
.transition().duration(1000)
.style("opacity", 1);
} else {
/*Make all arc visible*/
svg.selectAll("g.group").select("path")
.transition().duration(1000)
.style("opacity", 1);
};
/*Make mouse over and out possible*/
d3.selectAll(".group")
.on("mouseover", fade(.02))
.on("mouseout", fade(.80));
/*Show all chords*/
chords.transition().duration(1000)
.style("opacity", opacityValueBase);
/*Show all the text*/
d3.selectAll("g.group").selectAll("line")
.transition().duration(100)
.style("stroke","#000");
/*Same for the %'s*/
svg.selectAll("g.group")
.transition().duration(100)
.selectAll(".tickLabels").style("opacity",1);
/*And the Names of each Arc*/
svg.selectAll("g.group")
.transition().duration(100)
.selectAll(".titles").style("opacity",1);
};/*finalChord*/
/*//////////////////////////////////////////////////////////
////////////////// Extra Functions /////////////////////////
//////////////////////////////////////////////////////////*/
/*Returns an event handler for fading a given chord group*/
function fade(opacity) {
return function(d, i) {
svg.selectAll("path.chord")
.filter(function(d) { return d.source.index != i && d.target.index != i; })
.transition()
.style("stroke-opacity", opacity)
.style("fill-opacity", opacity);
};
};/*fade*/
/*Returns an array of tick angles and labels, given a group*/
function groupTicks(d) {
var k = (d.endAngle - d.startAngle) / d.value;
return d3.range(0, d.value, 1).map(function(v, i) {
return {
angle: v * k + d.startAngle,
label: i % 5 ? null : v + "%"
};
});
};/*groupTicks*/
/*Taken from https://groups.google.com/forum/#!msg/d3-js/WC_7Xi6VV50/j1HK0vIWI-EJ
//Calls a function only after the total transition ends*/
function endall(transition, callback) {
var n = 0;
transition
.each(function() { ++n; })
.each("end", function() { if (!--n) callback.apply(this, arguments); });
};/*endall*/
/*Taken from http://bl.ocks.org/mbostock/7555321
//Wraps SVG text*/
function wrap(text, width) {
var text = d3.select(this)[0][0],
words = text.text().split(/\s+/).reverse(),
word,
line = [],
lineNumber = 0,
lineHeight = 1.4,
y = text.attr("y"),
x = text.attr("x"),
dy = parseFloat(text.attr("dy")),
tspan = text.text(null).append("tspan").attr("x", x).attr("y", y).attr("dy", dy + "em");
while (word = words.pop()) {
line.push(word);
tspan.text(line.join(" "));
if (tspan.node().getComputedTextLength() > width) {
line.pop();
tspan.text(line.join(" "));
line = [word];
tspan = text.append("tspan").attr("x", x).attr("y", y).attr("dy", ++lineNumber * lineHeight + dy + "em").text(word);
};
};
};
/*Transition the top circle text*/
function changeTopText (newText, loc, delayDisappear, delayAppear, finalText, xloc, w) {
/*If finalText is not provided, it is not the last text of the Draw step*/
if(typeof(finalText)==='undefined') finalText = false;
if(typeof(xloc)==='undefined') xloc = 0;
if(typeof(w)==='undefined') w = 350;
middleTextTop
/*Current text disappear*/
.transition().delay(700 * delayDisappear).duration(700)
.attr('opacity', 0)
/*New text appear*/
.call(endall, function() {
middleTextTop.text(newText)
.attr("y", -24*loc + "px")
.attr("x", xloc + "px")
.call(wrap, w);
})
.transition().delay(700 * delayAppear).duration(700)
.attr('opacity', 1)
.call(endall, function() {
if (finalText == true) {
d3.select("#clicker")
.text(buttonTexts[counter-2])
.style("pointer-events", "auto")
.transition().duration(400)
.style("border-color", "#363636")
.style("color", "#363636");
};
});
};/*changeTopText */
/*Transition the bottom circle text*/
function changeBottomText (newText, loc, delayDisappear, delayAppear) {
middleTextBottom
/*Current text disappear*/
.transition().delay(700 * delayDisappear).duration(700)
.attr('opacity', 0)
/*New text appear*/
.call(endall, function() {
middleTextBottom.text(newText)
.attr("y", 24*loc + "px")
.call(wrap, 350);
})
.transition().delay(700 * delayAppear).duration(700)
.attr('opacity', 1);
;}/*changeTopText*/
/*Stop clicker from working*/
function stopClicker() {
d3.select("#clicker")
.style("pointer-events", "none")
.transition().duration(400)
.style("border-color", "#D3D3D3")
.style("color", "#D3D3D3");
};/*stopClicker*/
/*Run the progress bar during an animation*/
function runProgressBar(time) {
/*Make the progress div visible*/
d3.selectAll("#progress")
.style("visibility", "visible");
/*Linearly increase the width of the bar
//After it is done, hide div again*/
d3.selectAll(".prgsFront")
.transition().duration(time).ease("linear")
.attr("width", prgsWidth)
.call(endall, function() {
d3.selectAll("#progress")
.style("visibility", "hidden");
});
/*Reset to zero width*/
d3.selectAll(".prgsFront")
.attr("width", 0);
};/*runProgressBar*/
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Storytelling with a Chord Diagram - Switching between Phone Brands</title>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link href='http://fonts.googleapis.com/css?family=Oswald:400,300,700' rel='stylesheet' type='text/css'>
<link href='http://fonts.googleapis.com/css?family=Raleway' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div id="body">
<div id="chart"></div>
<div id="clickerWrapper">
<div id="progress"></div>
<div id="clicker">Let's Start</div>
</div>
<div id="buttonWrapper">
<div id="buttonWrapperInner">
<div id="skip" class="sideButton">SKIP INTRO</div>
<div id="reset" class="sideButton">RESET</div>
<div id="link" class="sideButton"><a href="http://bl.ocks.org/nbremer/raw/94db779237655907b907/" target="_blank">GO TO SOURCE</a></div>
</div>
</div>
</div>
<script src="chords.js"></script>
</body>
</html>
Raw
style.css
body {
overflow: hidden;
margin: 0;
font-size: 14px;
font-family: 'Raleway', sans-serif;
text-align: center;
/*font-family: Oswald;*/
/*font-family: "Helvetica Neue", Helvetica;*/
}
#clickerWrapper {
top: 0;
z-index: 1;
display: block;
position: relative;
width: 640px;
/*padding-top: 5px;*/
visibility: auto;
text-align: center;
margin: 0 auto;
}
#clicker {
z-index: 1;
display: block;
font-family: Oswald;
font-size: 36px;
font-weight: 300;
color: #363636;
position: relative;
/*width: 80px;*/
text-align: center;
width: 30%;
margin: 0 auto;
border: 1px solid;
border-color: #363636;
cursor: pointer;
}
#progress {
z-index: 1;
display: block;
position: relative;
width: 40%;
height: 6px;
margin: 10px auto;
visibility: hidden;
}
#buttonWrapper{
z-index: 1;
display: block;
font-family: Oswald;
font-size: 14px;
font-weight: 300;
color: #6B6B6B;
position: relative;
width: 640px;
text-align: center;
overflow: hidden;
text-align: center;
margin: 0 auto;
margin-top: 30px;
}
#buttonWrapperInner{
position: relative;
width: 300px;
height: 30px;
margin: 0 auto;
}
#skip{
width: 90px;
cursor: pointer;
float: left;
text-align: left;
}
#reset{
width: 110px;
cursor: pointer;
float: left;
}
#link{
width: 100px;
cursor: pointer;
float: left;
text-align: right;
}
line {
stroke: #000;
stroke-width: 1.px;
}
text {
font-size: 10px;
}
.titles{
font-size: 14px;
}
.explanation{
font-size: 20px;
font-weight: 300;
text-align: center;
}
path.chord {
fill-opacity: .80;
}
a {
text-decoration: none;
color: #6B6B6B;
}
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