Question

我正在使用ReactJS应用程序中的D3创建水平条形图。我遇到的问题是这些条太长而被切断。如何按比例缩小条形图？

感谢任何建议。

Answer 1

如果要适合图表，则需要更改呈现图表的容器的宽度/高度（请参见下面的代码中的<svg>）。通常，钢筋的最大高度或宽度不得超过相应容器的尺寸大小，因此您可能在代码中的某个地方出错。如果您可以共享代码，将很有帮助。

在这里，我提供了一个正确缩放水平条形图的示例（原始：https://bl.ocks.org/caravinden/eb0e5a2b38c8815919290fa838c6b63b）：

var data = [{"salesperson":"Bob","sales":33},{"salesperson":"Robin","sales":12},{"salesperson":"Anne","sales":41},{"salesperson":"Mark","sales":16},{"salesperson":"Joe","sales":159},{"salesperson":"Eve","sales":38},{"salesperson":"Karen","sales":21},{"salesperson":"Kirsty","sales":25},{"salesperson":"Chris","sales":30},{"salesperson":"Lisa","sales":47},{"salesperson":"Tom","sales":5},{"salesperson":"Stacy","sales":20},{"salesperson":"Charles","sales":13},{"salesperson":"Mary","sales":29}];

// set the dimensions and margins of the graph
var 
    svg = d3.select("svg"),
    margin = {top: 20, right: 20, bottom: 30, left: 60},
    width = +svg.attr("width") - margin.left - margin.right,
    height = +svg.attr("height") - margin.top - margin.bottom;

// set the ranges
var y = d3.scaleBand()
          .range([height, 0])
          .padding(0.1);

var x = d3.scaleLinear()
          .range([0, width]);
          
// append a 'group' element to 'svg'
// moves the 'group' element to the top left margin
svg = svg
    .append("g")
    .attr("transform", 
          "translate(" + margin.left + "," + margin.top + ")");

  // format the data
  data.forEach(function(d) {
    d.sales = +d.sales;
  });

  // Scale the range of the data in the domains
  x.domain([0, d3.max(data, function(d){ return d.sales; })])
  y.domain(data.map(function(d) { return d.salesperson; }));
  //y.domain([0, d3.max(data, function(d) { return d.sales; })]);

  // append the rectangles for the bar chart
  svg.selectAll(".bar")
      .data(data)
    .enter().append("rect")
      .attr("class", "bar")
      //.attr("x", function(d) { return x(d.sales); })
      .attr("width", function(d) {return x(d.sales); } )
      .attr("y", function(d) { return y(d.salesperson); })
      .attr("height", y.bandwidth());

  // add the x Axis
  svg.append("g")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));

  // add the y Axis
  svg.append("g")
      .call(d3.axisLeft(y));

.bar {
  fill: steelblue;
}

.bar:hover {
  fill: brown;
}

.axis--x path {
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.5.0/d3.min.js"></script>
<svg width="300" height="500"></svg>

如何确保D3水平条形图适合div？

1 个答案: