我有一个分组的条形图，我正在旋转x轴文本。但是x轴文本未在条形下正确对齐。如何使x轴文本与特定条形对齐？
我认为x轴文本旋转变换属性出了问题。
以下是代码：
html
<!DOCTYPE html>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js">
</script>
<body>
<div id="chartdiv" style="height: 500px; width: 600px;"> </div>
</body>
这里是javascript
var data = [
{
"PAG": "FACT",
"Projects": "3",
"High Level Design": "1",
"Business Requirements": "1",
"Change Impact Document": "2",
"MAC Reviews": "3"
}
,
{
"PAG": "Advisory Platforms & Solutions",
"Projects": "1", "MAC Reviews": "1"
},
{
"PAG": "Capital Markets",
"Projects": "2" },
{
"PAG": "Field Management Home Office",
"Projects": "3"
},
{
"PAG": "Institutional Wealth Services",
"Projects": "1",
"Business Requirements": "1",
"Change Impact Document": "1"
},
{
"PAG": "Traditional Invest Products",
"Projects": "2"
},
{
"PAG": "WM Operations",
"Projects": "2",
"High Level Design": "2",
"Low Level Design": "1"
}
];
function keysLen(obj) {
count = 0;
index = 0;
obj.map(function (d, i) {
if (d3.keys(d).length > count) {
count = d3.keys(d).length;
index = i
}
})
return obj[index];
}
var margin = { top: 20, right: 20, bottom: 30, left: 40 },
width = parseInt(d3.select("#chartdiv").style("width")) - margin.left - margin.right,
height = parseInt(d3.select("#chartdiv").style("height")) - margin.top - margin.bottom,
padding = 100;
//var border = 1; var bordercolor = 'black';
var x0 = d3.scale.ordinal().domain(data.map(function (d) { return d.PAG; }))
.rangeRoundBands([0, width - padding], .1);
//var x0 = d3.scale.ordinal()
// .rangeRoundBands([0, width], .1);
var x1 = d3.scale.ordinal();
var y = d3.scale.linear().range([height, 0]);
var ageNames = d3.keys(keysLen(data)).filter(function (d) {
return d != "PAG"
});
var p = d3.scale.category20();
var r = p.range(); // ["#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd",
var color = d3.scale.ordinal().range(r);
var xAxis = d3.svg.axis()
.scale(x0)
.tickSize(0)
//.tickPadding(8)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(d3.format(".0d"));
//add tooltip------------------------------------------------
var tooltip = d3.select("#chartdiv")
.append("div")
.attr("class", "d3-tip")
.style("position", "absolute")
.style("opacity", 0);
var svg = d3.select("#chartdiv").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.forEach(function (d) {
d.ages = ageNames.map(function (name) {
return { name: name, value: +d[name] };
});
});
x0.domain(data.map(function (d) { return d.PAG; }));
//x0.domain(data.map(function (d) { return d.PAG; })).rangeRoundBands([0, width - padding], .1);
x1.domain(ageNames).rangeRoundBands([0, x0.rangeBand()]);
y.domain([0, d3.max(data, function (d) { return d3.max(d.ages, function (d) { return d.value; }); })]).nice().range([height - padding, 0]);
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([-10, 0])
.html(data, function (d) {
return "<strong>Total Count:</strong> <span style='color:#1F497D'>" + d.ages.value + "</span>";
})
//svg.call(tip);
var gXAxis = svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + (height - padding) + ")")
.call(xAxis);
gXAxis.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", ".15em")
.attr("transform", "rotate(-30)");
// xAxis label
svg.append("text")
.attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom - 5) + ")")
.style("text-anchor", "middle")
.attr("class", "subtitle")
.text("Process Area Group");
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("x", -(height - padding) / 2)
.attr("y", 0 - margin.left)
//.attr("y", -margin.bottom)
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("Artifacts")
.attr("class", "subtitle");
var state = svg.selectAll(".PAG")
.data(data)
.enter().append("g")
.attr("class", "PAG")
.attr("transform", function (d) { return "translate(" + x0(d.PAG) + ",0)"; });
state.selectAll("rect")
.data(function (d) { return d.ages; })
.enter().append("rect")
.attr("width", x1.rangeBand())
.attr("x", function (d) { return x1(d.name); })
.attr("y", function (d) { return y(d.value); })
.attr("height", function (d) { return height - padding - y(d.value); })
.style("fill", function (d) { return color(d.name); })
.on("mouseover", function (d) {
var pos = d3.mouse(this);
tooltip
.transition()
.duration(500)
.style("opacity", 1);
tooltip.html('<strong>' + d.name + ':' + '</strong>' + '<span style=color:#1F497D>' + d.value + '</span>')
.style("left", d3.event.x + "px")
.style("top", d3.event.y + "px")
//.text(d.name + ":" + d.value);
})
.on("mouseout", function () {
tooltip.style("opacity", 0);
});
//Adding Legend for the Grouped Bar Chart
var legend = svg.selectAll(".legend")
.data(ageNames.slice().reverse())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function (d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("rect")
.attr("x", width - 18)
.attr("width", 15)
.attr("height", 15)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function (d) { return d; });
svg.append("text")
.text("Project Artifacts By PAG")
.attr("x", width / 2)
.attr("y", 0 - (margin.top / 2))
.attr("text-anchor", "middle")
.style("text-decoration", "underline")
.attr("class", "title");