我正在尝试生成一个面积图，其 x 轴设置为固定数量的刻度 (10)，其中每个刻度都是用于图表的数据集中的字符串值。我不知道我在这里做错了什么:
<!DOCTYPE html>
<meta charset="utf - 8">
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
<style>
body {
font: 10px Arial;
}
.axis path {
fill: none;
stroke: grey;
shape-rendering: crispEdges;
}
.axis text {
font-family: Arial;
font-size: 10px;
}
.axis line {
fill: none;
stroke: grey;
stroke-width: 1;
shape-rendering: crispEdges;
}
</style>
</head>
<div class="row">
<div class="col-md-12" id="areaareaChart1" align="center">
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script>
function renderAreaChart() {
var margin = { top: 20, right: 20, bottom: 30, left: 50 },
width = 1600 - margin.left - margin.right,
height = 600 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.rangePoints([0, width], 1);
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.ticks(10)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var line = d3.svg.line()
.x(function (d) { return x(d.name); })
.y(function (d) { return y(d.value); });
var area = d3.svg.area()
.x(function (d) { return x(d.name); })
.y0(height)
.y1(function (d) { return y(d.value); });
var svg = d3.select("#areaareaChart1").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 + ")");
var data = [{"name":"23-May-08","value":181.17},{"name":"27-May-08","value":186.43},{"name":"28-May-08","value":187.01},{"name":"29-May-08","value":186.69},{"name":"30-May-08","value":188.75},{"name":"2-Jun-08","value":186.1},{"name":"3-Jun-08","value":185.37},{"name":"4-Jun-08","value":185.19},{"name":"5-Jun-08","value":189.43},{"name":"6-Jun-08","value":185.64},{"name":"9-Jun-08","value":181.61},{"name":"10-Jun-08","value":185.64},{"name":"11-Jun-08","value":180.81},{"name":"12-Jun-08","value":173.26},{"name":"13-Jun-08","value":172.37},{"name":"16-Jun-08","value":176.84},{"name":"17-Jun-08","value":181.43},{"name":"18-Jun-08","value":178.75},{"name":"19-Jun-08","value":180.9},{"name":"20-Jun-08","value":175.27},{"name":"23-Jun-08","value":173.16},{"name":"24-Jun-08","value":173.25},{"name":"25-Jun-08","value":177.39},{"name":"26-Jun-08","value":168.26},{"name":"27-Jun-08","value":170.09},{"name":"30-Jun-08","value":167.44},{"name":"1-Jul-08","value":174.68},{"name":"2-Jul-08","value":168.18},{"name":"3-Jul-08","value":170.12},{"name":"7-Jul-08","value":175.16},{"name":"8-Jul-08","value":179.55},{"name":"9-Jul-08","value":174.25},{"name":"10-Jul-08","value":176.63},{"name":"11-Jul-08","value":172.58},{"name":"14-Jul-08","value":173.88},{"name":"15-Jul-08","value":169.64},{"name":"16-Jul-08","value":172.81},{"name":"17-Jul-08","value":171.81},{"name":"18-Jul-08","value":165.15},{"name":"21-Jul-08","value":166.29},{"name":"22-Jul-08","value":162.02},{"name":"23-Jul-08","value":166.26},{"name":"24-Jul-08","value":159.03},{"name":"25-Jul-08","value":162.12},{"name":"28-Jul-08","value":154.4},{"name":"29-Jul-08","value":157.08},{"name":"30-Jul-08","value":159.88},{"name":"31-Jul-08","value":158.95},{"name":"1-Aug-08","value":156.66},{"name":"4-Aug-08","value":153.23},{"name":"5-Aug-08","value":160.64},{"name":"6-Aug-08","value":164.19},{"name":"7-Aug-08","value":163.57},{"name":"8-Aug-08","value":169.55},{"name":"11-Aug-08","value":173.56},{"name":"12-Aug-08","value":176.73},{"name":"13-Aug-08","value":179.3},{"name":"14-Aug-08","value":179.32},{"name":"15-Aug-08","value":175.74},{"name":"18-Aug-08","value":175.39},{"name":"19-Aug-08","value":173.53},{"name":"20-Aug-08","value":175.84},{"name":"21-Aug-08","value":174.29},{"name":"22-Aug-08","value":176.79},{"name":"25-Aug-08","value":172.55},{"name":"26-Aug-08","value":173.64},{"name":"27-Aug-08","value":174.67},{"name":"28-Aug-08","value":173.74},{"name":"29-Aug-08","value":169.53},{"name":"2-Sep-08","value":166.19},{"name":"3-Sep-08","value":166.96},{"name":"4-Sep-08","value":161.22},{"name":"5-Sep-08","value":160.18},{"name":"8-Sep-08","value":157.92},{"name":"9-Sep-08","value":151.68},{"name":"10-Sep-08","value":151.61},{"name":"11-Sep-08","value":152.65},{"name":"12-Sep-08","value":148.94},{"name":"15-Sep-08","value":140.36},{"name":"16-Sep-08","value":139.88},{"name":"17-Sep-08","value":127.83},{"name":"18-Sep-08","value":134.09},{"name":"19-Sep-08","value":140.91},{"name":"22-Sep-08","value":131.05},{"name":"23-Sep-08","value":126.84},{"name":"24-Sep-08","value":128.71},{"name":"25-Sep-08","value":131.93},{"name":"26-Sep-08","value":128.24},{"name":"29-Sep-08","value":105.26},{"name":"30-Sep-08","value":113.66},{"name":"1-Oct-08","value":109.12},{"name":"2-Oct-08","value":100.1},{"name":"3-Oct-08","value":97.07},{"name":"6-Oct-08","value":98.14},{"name":"7-Oct-08","value":89.16},{"name":"8-Oct-08","value":89.79},{"name":"9-Oct-08","value":88.74},{"name":"10-Oct-08","value":96.8},{"name":"13-Oct-08","value":110.26},{"name":"14-Oct-08","value":104.08},{"name":"15-Oct-08","value":97.95},{"name":"16-Oct-08","value":101.89},{"name":"17-Oct-08","value":97.4},{"name":"20-Oct-08","value":98.44},{"name":"21-Oct-08","value":91.49},{"name":"22-Oct-08","value":96.87},{"name":"23-Oct-08","value":98.23},{"name":"24-Oct-08","value":96.38},{"name":"27-Oct-08","value":92.09},{"name":"28-Oct-08","value":99.91},{"name":"29-Oct-08","value":104.55},{"name":"30-Oct-08","value":111.04},{"name":"31-Oct-08","value":107.59},{"name":"3-Nov-08","value":106.96},{"name":"4-Nov-08","value":110.99},{"name":"5-Nov-08","value":103.3},{"name":"6-Nov-08","value":99.1},{"name":"7-Nov-08","value":98.24},{"name":"10-Nov-08","value":95.88},{"name":"11-Nov-08","value":94.77},{"name":"12-Nov-08","value":90.12},{"name":"13-Nov-08","value":96.44},{"name":"14-Nov-08","value":90.24},{"name":"17-Nov-08","value":88.14},{"name":"18-Nov-08","value":89.91},{"name":"19-Nov-08","value":86.29},{"name":"20-Nov-08","value":80.49},{"name":"21-Nov-08","value":82.58},{"name":"24-Nov-08","value":92.95},{"name":"25-Nov-08","value":90.8},{"name":"26-Nov-08","value":95},{"name":"27-Nov-08","value":95},{"name":"28-Nov-08","value":92.67},{"name":"1-Dec-08","value":88.93},{"name":"2-Dec-08","value":92.47},{"name":"3-Dec-08","value":95.9},{"name":"4-Dec-08","value":91.41},{"name":"5-Dec-08","value":94},{"name":"8-Dec-08","value":99.72},{"name":"9-Dec-08","value":100.06},{"name":"10-Dec-08","value":98.21},{"name":"11-Dec-08","valu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data.forEach(function (d) {
d.name = d.name;
d.value = +d.value;
});
x.domain(data.map(function (d) { return d.name; }));
y.domain(d3.extent(data, function (d) { return d.value; }));
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
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("Label");
svg.append("path")
.datum(data)
.attr("d", area)
.attr("fill", "#FF0000");
}
renderAreaChart();
</script>
</div>
</div>
最佳答案
请看粗体部分，计数只是一个提示值。
一种无状态方法，从比例尺的输入域返回大约计数代表值。如果未指定 count，则默认为 10。返回的刻度值是均匀间隔的，具有人类可读的值(例如 10 的幂的倍数)，并且保证在输入域的范围内。刻度线通常用于与可视化数据一起显示引用线或刻度线。 指定的计数只是一个提示；根据输入域，比例尺可能会返回更多或更少的值。
如果您想完全按照您想要的方式显示刻度数，可以使用 API tickValues。
关于javascript - d3.js x 轴具体字符串刻度数，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35932913/