This example, using satirical data from The Onion, demonstrates how to wrap long axis labels to fit on multiple lines.
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Wrapping Long Labels
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| license: gpl-3.0 |
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| name | value | |
|---|---|---|
| Family in feud with Zuckerbergs | .17 | |
| Committed 671 birthdays to memory | .19 | |
| Ex is doing too well | .10 | |
| High school friends all dead now | .15 | |
| Discovered how to “like” things mentally | .27 | |
| Not enough politics | .12 |
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| <!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 text = d3.select(this), | |
| words = text.text().split(/\s+/).reverse(), | |
| word, | |
| line = [], | |
| lineNumber = 0, | |
| lineHeight = 1.1, // ems | |
| y = text.attr("y"), | |
| dy = parseFloat(text.attr("dy")), | |
| tspan = text.text(null).append("tspan").attr("x", 0).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", 0).attr("y", y).attr("dy", ++lineNumber * lineHeight + dy + "em").text(word); | |
| } | |
| } | |
| }); | |
| } | |
| function type(d) { | |
| d.value = +d.value; | |
| return d; | |
| } | |
| </script> |
I changed the variable definition for words to use the data for that text element instead of pulling the rendered text, because I need to recall this text wrapper for showing on hover details when I zoom in and out of a timeline. Not sure if there is a better way but it seems to work for me.
Re: hidden text. In my case, the text was hidden in a 'tab-pane.' My solution, also ugly, was to remove the class immediately before the getComputedTextLength() calculation and then restore the class immediately after. Would love to hear if there is a better way to do this now.
function wrap(text, width) {
text.each(function() {
var text = d3.select(this),
words = text.text().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");
var tabs = d3.selectAll('div.tab-pane').classed('tab-pane', false); // remove tab-pane class
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); // add 'x'
}
}
tabs.classed('tab-pane', true); // add tab-pane class back
});
}
Original idea here: https://stackoverflow.com/questions/27886734/how-to-word-wrap-legend-labels-in-d3.
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Is there any such link where i can find the wrap function in typescript, please. i am working with d3v4 in angular2