【发布时间】：2018-11-12 11:38:47
【问题描述】：
我需要为长 X 轴标签调整 Mike Bostock 的可排序条形图（here）。我将它们旋转为略微垂直，最初的结果是它们被很好地分开并且在 X 轴下方，但是当排序过程开始时，它们会回到轴上。 如果有人能帮我把标签放在正确的位置，我会很高兴的！
我的JSFiddle可用here，JavaScript代码如下：
var margin = {
top: 20,
right: 20,
bottom: 60,
left: 40
},
width = 960 - margin.left - margin.right,
height = 600 - margin.top - margin.bottom;
var formatPercent = d3.format(".0%");
var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1, 1);
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")
.tickFormat(formatPercent);
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 + ")");
data = [{
letter: "Alongname1",
frequency: 0.08167
},
{
letter: "Alongname2",
frequency: 0.01492
},
{
letter: "Alongname3",
frequency: 0.0278
},
{
letter: "Alongname4",
frequency: 0.04253
},
{
letter: "Alongname5",
frequency: 0.12702
},
{
letter: "Alongname6",
frequency: 0.02288
},
{
letter: "Alongname7",
frequency: 0.02022
},
{
letter: "Alongname8",
frequency: 0.06094
},
{
letter: "Alongname9",
frequency: 0.06973
},
{
letter: "Alongname10",
frequency: 0.00153
},
{
letter: "Alongname11",
frequency: 0.00747
},
{
letter: "Alongname12",
frequency: 0.04025
},
{
letter: "Alongname13",
frequency: 0.02517
},
{
letter: "Alongname14",
frequency: 0.06749
},
{
letter: "Alongname15",
frequency: 0.07507
},
{
letter: "Alongname16",
frequency: 0.01929
},
{
letter: "Alongname17",
frequency: 0.00098
},
{
letter: "Alongname18",
frequency: 0.05987
}
];
data.forEach(function(d) {
d.frequency = +d.frequency;
});
x.domain(data.map(function(d) {
return d.letter;
}));
y.domain([0, d3.max(data, function(d) {
return d.frequency;
})]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", ".35em")
.attr("transform", "rotate(-65)");
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Frequency");
svg.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) {
return x(d.letter);
})
.attr("width", x.rangeBand())
.attr("y", function(d) {
return y(d.frequency);
})
.attr("height", function(d) {
return height - y(d.frequency);
});
var sortTimeout = setTimeout(function() {
d3.select("input").property("checked", true).each(change);
}, 2000);
function change() {
clearTimeout(sortTimeout);
// Copy-on-write since tweens are evaluated after a delay.
var x0 = x.domain(data.sort(this.checked ?
function(a, b) {
return b.frequency - a.frequency;
} :
function(a, b) {
return d3.ascending(a.letter, b.letter);
})
.map(function(d) {
return d.letter;
}))
.copy();
svg.selectAll(".bar")
.sort(function(a, b) {
return x0(a.letter) - x0(b.letter);
});
var transition = svg.transition().duration(750),
delay = function(d, i) {
return i * 50;
};
transition.selectAll(".bar")
.delay(delay)
.attr("x", function(d) {
return x0(d.letter);
});
transition.select(".x.axis")
.call(xAxis)
.selectAll("g")
.delay(delay);
}
【问题讨论】：
标签： javascript d3.js bar-chart