To display longer text on the upper left,
you can either:
increase the width of the rectangles by:
// Breadcrumb dimensions: width, height, spacing, width of tip/tail.
var b = {
w: 175, h: 30, s: 3, t: 10
};```and/or decrease the font-size:
#sequence text{
font-size: 10px;
}
</style>```
forked from kerryrodden‘s block: Sequences sunburst (d3 v4)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Sequences sunburst</title>
<script src="https://d3js.org/d3.v4.min.js"></script>
<link rel="stylesheet" type="text/css"
href="https://fonts.googleapis.com/css?family=Open+Sans:400,600">
<link rel="stylesheet" type="text/css" href="sequences.css"/>
<style>
#sequence text{
font-size: 10px;
}
</style>
</head>
<body>
<div id="main">
<div id="sequence"></div>
<div id="chart">
<div id="explanation" style="visibility: hidden;">
<span id="percentage"></span><br/>
of visits begin with this sequence of pages
</div>
</div>
</div>
<div id="sidebar">
<input type="checkbox" id="togglelegend"> Legend<br/>
<div id="legend" style="visibility: hidden;"></div>
</div>
<script type="text/javascript" src="sequences.js"></script>
<script type="text/javascript">
// Hack to make this example display correctly in an iframe on bl.ocks.org
d3.select(self.frameElement).style("height", "700px");
</script>
</body>
</html>
Copyright 2013 Google Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
body {
font-family: 'Open Sans', sans-serif;
font-size: 12px;
font-weight: 400;
background-color: #fff;
width: 960px;
height: 700px;
margin-top: 10px;
}
#main {
float: left;
width: 750px;
}
#sidebar {
float: right;
width: 100px;
}
#sequence {
width: 600px;
height: 70px;
}
#legend {
padding: 10px 0 0 3px;
}
#sequence text, #legend text {
font-weight: 600;
fill: #fff;
}
#chart {
position: relative;
}
#chart path {
stroke: #fff;
}
#explanation {
position: absolute;
top: 260px;
left: 305px;
width: 140px;
text-align: center;
color: #666;
z-index: -1;
}
#percentage {
font-size: 2.5em;
}
// Dimensions of sunburst.
var width = 750;
var height = 600;
var radius = Math.min(width, height) / 2;
// Breadcrumb dimensions: width, height, spacing, width of tip/tail.
var b = {
w: 125, h: 30, s: 3, t: 10
};
// Mapping of step names to colors.
var colors = {
"home": "#5687d1",
"product": "#7b615c",
"search": "#de783b",
"account": "#6ab975",
"other": "#a173d1",
"end": "#bbbbbb"
};
// Total size of all segments; we set this later, after loading the data.
var totalSize = 0;
var vis = d3.select("#chart").append("svg:svg")
.attr("width", width)
.attr("height", height)
.append("svg:g")
.attr("id", "container")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var partition = d3.partition()
.size([2 * Math.PI, radius * radius]);
var arc = d3.arc()
.startAngle(function(d) { return d.x0; })
.endAngle(function(d) { return d.x1; })
.innerRadius(function(d) { return Math.sqrt(d.y0); })
.outerRadius(function(d) { return Math.sqrt(d.y1); });
// Use d3.text and d3.csvParseRows so that we do not need to have a header
// row, and can receive the csv as an array of arrays.
d3.text("visit-sequences.csv", function(text) {
var csv = d3.csvParseRows(text);
var json = buildHierarchy(csv);
createVisualization(json);
});
// Main function to draw and set up the visualization, once we have the data.
function createVisualization(json) {
// Basic setup of page elements.
initializeBreadcrumbTrail();
drawLegend();
d3.select("#togglelegend").on("click", toggleLegend);
// Bounding circle underneath the sunburst, to make it easier to detect
// when the mouse leaves the parent g.
vis.append("svg:circle")
.attr("r", radius)
.style("opacity", 0);
// Turn the data into a d3 hierarchy and calculate the sums.
var root = d3.hierarchy(json)
.sum(function(d) { return d.size; })
.sort(function(a, b) { return b.value - a.value; });
// For efficiency, filter nodes to keep only those large enough to see.
var nodes = partition(root).descendants()
.filter(function(d) {
return (d.x1 - d.x0 > 0.005); // 0.005 radians = 0.29 degrees
});
var path = vis.data([json]).selectAll("path")
.data(nodes)
.enter().append("svg:path")
.attr("display", function(d) { return d.depth ? null : "none"; })
.attr("d", arc)
.attr("fill-rule", "evenodd")
.style("fill", function(d) { return colors[d.data.name]; })
.style("opacity", 1)
.on("mouseover", mouseover);
// Add the mouseleave handler to the bounding circle.
d3.select("#container").on("mouseleave", mouseleave);
// Get total size of the tree = value of root node from partition.
totalSize = path.datum().value;
};
// Fade all but the current sequence, and show it in the breadcrumb trail.
function mouseover(d) {
var percentage = (100 * d.value / totalSize).toPrecision(3);
var percentageString = percentage + "%";
if (percentage < 0.1) {
percentageString = "< 0.1%";
}
d3.select("#percentage")
.text(percentageString);
d3.select("#explanation")
.style("visibility", "");
var sequenceArray = d.ancestors().reverse();
sequenceArray.shift(); // remove root node from the array
updateBreadcrumbs(sequenceArray, percentageString);
// Fade all the segments.
d3.selectAll("path")
.style("opacity", 0.3);
// Then highlight only those that are an ancestor of the current segment.
vis.selectAll("path")
.filter(function(node) {
return (sequenceArray.indexOf(node) >= 0);
})
.style("opacity", 1);
}
// Restore everything to full opacity when moving off the visualization.
function mouseleave(d) {
// Hide the breadcrumb trail
d3.select("#trail")
.style("visibility", "hidden");
// Deactivate all segments during transition.
d3.selectAll("path").on("mouseover", null);
// Transition each segment to full opacity and then reactivate it.
d3.selectAll("path")
.transition()
.duration(1000)
.style("opacity", 1)
.on("end", function() {
d3.select(this).on("mouseover", mouseover);
});
d3.select("#explanation")
.style("visibility", "hidden");
}
function initializeBreadcrumbTrail() {
// Add the svg area.
var trail = d3.select("#sequence").append("svg:svg")
.attr("width", width)
.attr("height", 50)
.attr("id", "trail");
// Add the label at the end, for the percentage.
trail.append("svg:text")
.attr("id", "endlabel")
.style("fill", "#000");
}
// Generate a string that describes the points of a breadcrumb polygon.
function breadcrumbPoints(d, i) {
var points = [];
points.push("0,0");
points.push(b.w + ",0");
points.push(b.w + b.t + "," + (b.h / 2));
points.push(b.w + "," + b.h);
points.push("0," + b.h);
if (i > 0) { // Leftmost breadcrumb; don't include 6th vertex.
points.push(b.t + "," + (b.h / 2));
}
return points.join(" ");
}
// Update the breadcrumb trail to show the current sequence and percentage.
function updateBreadcrumbs(nodeArray, percentageString) {
// Data join; key function combines name and depth (= position in sequence).
var trail = d3.select("#trail")
.selectAll("g")
.data(nodeArray, function(d) { return d.data.name + d.depth; });
// Remove exiting nodes.
trail.exit().remove();
// Add breadcrumb and label for entering nodes.
var entering = trail.enter().append("svg:g");
entering.append("svg:polygon")
.attr("points", breadcrumbPoints)
.style("fill", function(d) { return colors[d.data.name]; });
entering.append("svg:text")
.attr("x", (b.w + b.t) / 2)
.attr("y", b.h / 2)
.attr("dy", "0.35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.data.name; });
// Merge enter and update selections; set position for all nodes.
entering.merge(trail).attr("transform", function(d, i) {
return "translate(" + i * (b.w + b.s) + ", 0)";
});
// Now move and update the percentage at the end.
d3.select("#trail").select("#endlabel")
.attr("x", (nodeArray.length + 0.5) * (b.w + b.s))
.attr("y", b.h / 2)
.attr("dy", "0.35em")
.attr("text-anchor", "middle")
.text(percentageString);
// Make the breadcrumb trail visible, if it's hidden.
d3.select("#trail")
.style("visibility", "");
}
function drawLegend() {
// Dimensions of legend item: width, height, spacing, radius of rounded rect.
var li = {
w: 175, h: 30, s: 3, r: 3
};
var legend = d3.select("#legend").append("svg:svg")
.attr("width", li.w)
.attr("height", d3.keys(colors).length * (li.h + li.s));
var g = legend.selectAll("g")
.data(d3.entries(colors))
.enter().append("svg:g")
.attr("transform", function(d, i) {
return "translate(0," + i * (li.h + li.s) + ")";
});
g.append("svg:rect")
.attr("rx", li.r)
.attr("ry", li.r)
.attr("width", li.w)
.attr("height", li.h)
.style("fill", function(d) { return d.value; });
g.append("svg:text")
.attr("x", li.w / 2)
.attr("y", li.h / 2)
.attr("dy", "0.35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.key; });
}
function toggleLegend() {
var legend = d3.select("#legend");
if (legend.style("visibility") == "hidden") {
legend.style("visibility", "");
} else {
legend.style("visibility", "hidden");
}
}
// Take a 2-column CSV and transform it into a hierarchical structure suitable
// for a partition layout. The first column is a sequence of step names, from
// root to leaf, separated by hyphens. The second column is a count of how
// often that sequence occurred.
function buildHierarchy(csv) {
var root = {"name": "root", "children": []};
for (var i = 0; i < csv.length; i++) {
var sequence = csv[i][0];
var size = +csv[i][1];
if (isNaN(size)) { // e.g. if this is a header row
continue;
}
var parts = sequence.split("-");
var currentNode = root;
for (var j = 0; j < parts.length; j++) {
var children = currentNode["children"];
var nodeName = parts[j];
var childNode;
if (j + 1 < parts.length) {
// Not yet at the end of the sequence; move down the tree.
var foundChild = false;
for (var k = 0; k < children.length; k++) {
if (children[k]["name"] == nodeName) {
childNode = children[k];
foundChild = true;
break;
}
}
// If we don't already have a child node for this branch, create it.
if (!foundChild) {
childNode = {"name": nodeName, "children": []};
children.push(childNode);
}
currentNode = childNode;
} else {
// Reached the end of the sequence; create a leaf node.
childNode = {"name": nodeName, "size": size};
children.push(childNode);
}
}
}
return root;
};