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ericsoco/README.md

Created November 6, 2015 21:14
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Wrapping Long Labels 2.0
Raw
README.md
Raw
data.tsv
name value
Family in feud with Zuckerbergs&Winkelvosses .17
Stored 671 birth-days to memory .19
Ex-frenemy is doing too well .10
High school friends all dead now .15
Discovered how to “like” things mentally .27
Not enough politics/religion/spam .12
Raw
index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.bar {
fill: steelblue;
}
.bar:hover {
fill: brown;
}
.title {
font: bold 14px "Helvetica Neue", Helvetica, Arial, sans-serif;
}
.axis {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.x.axis path {
display: none;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
var margin = {top: 80, right: 180, bottom: 80, left: 180},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1, .3);
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(8, "%");
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.tsv("data.tsv", type, function(error, data) {
x.domain(data.map(function(d) { return d.name; }));
y.domain([0, d3.max(data, function(d) { return d.value; })]);
svg.append("text")
.attr("class", "title")
.attr("x", x(data[0].name))
.attr("y", -26)
.text("Why Are We Leaving Facebook?");
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll(".tick text")
.call(wrap, x.rangeBand());
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
svg.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return x(d.name); })
.attr("width", x.rangeBand())
.attr("y", function(d) { return y(d.value); })
.attr("height", function(d) { return height - y(d.value); });
});
function wrap (text, width) {
text.each(function() {
var breakChars = ['/', '&', '-'],
text = d3.select(this),
textContent = text.text(),
spanContent;
breakChars.forEach(char => {
// Add a space after each break char for the function to use to determine line breaks
textContent = textContent.replace(char, char + ' ');
});
var words = textContent.split(/\s+/).reverse(),
word,
line = [],
lineNumber = 0,
lineHeight = 1.1, // ems
x = text.attr('x'),
y = text.attr('y'),
dy = parseFloat(text.attr('dy') || 0),
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();
spanContent = line.join(' ');
breakChars.forEach(char => {
// Remove spaces trailing breakChars that were added above
spanContent = spanContent.replace(char + ' ', char);
});
tspan.text(spanContent);
line = [word];
tspan = text.append('tspan').attr('x', x).attr('y', y).attr('dy', ++lineNumber * lineHeight + dy + 'em').text(word);
}
}
});
}
function type(d) {
d.value = +d.value;
return d;
}
</script>
@stevesong
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Thank you very much for this. I am gratefully using it. I have found an odd behaviour with it though that it does not seem to wrap text when the svg is in the second or third tab of a tabbed web page. https://stackoverflow.com/questions/45487890/d3-function-to-wrap-text-fails-in-tabbed-display

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