7

I am trying to apply a pattern to a D3 bar chart, but what I get is this:

enter image description here

  • the chart should stop exactly at 100,000
  • the pattern should be "fluid"

I am using a green and red pattern defined as follows:

  var defs = this.svg.append("g:defs");
  defs.append("g:pattern")
    .attr("id", "red-fill")
    .attr("patternUnits", "userSpaceOnUse")
    .attr("width", "85")
    .attr("height", "10")
    .append("g:image")
    .attr("xlink:href", "../10px-barchart-red.png")
    .attr("x", 0)
    .attr("y", 0)
    .attr("width", 85)
    .attr("height", 10);

  var defs = this.svg.append("g:defs");
  defs.append("g:pattern")
    .attr("id", "green-fill")
    .attr("patternUnits", "userSpaceOnUse")
    .attr("width", "85")
    .attr("height", "10")
    .append("g:image")
    .attr("xlink:href", "../10px-barchart-green.png")
    .attr("x", 0)
    .attr("y", 0)
    .attr("width", 85)
    .attr("height", 10);

And the plot is made with:

  this.svg.selectAll("rect")
    .data(dataset, getKeys)
    .enter()
    .append("rect")
    .attr('class', 'bar')
    .attr("x", function(d, i) {
        return x(i) + 44;
    })
    .attr("y", function(d, i) {
        return y(d.value);
    })
    .attr("width", x.rangeBand())
    .attr("height", function(d, i) {
        return height + padding - y(d.value);
    })
    .attr("fill", function(d) {
      if (d.key == 0) {
        return "url(#green-fill)";
      } else {
        return "url(#red-fill)";
      }
    })
4

1 回答 1

3

John Schulz 的这个块成功地制作了看起来很棒的图案条形图 ( https://bl.ocks.org/jfsiii/7772281 )。

为了方便和永久，复制了以下代码段中的代码（还添加了一个小动画以显示它也可以很好地过渡）。

var first = true;

setInterval( function(){
  
  if(first){
    d3.select('.thing-2').transition()
      .delay(500)
      .duration(1000)
      .attr('height',20)
      .attr('y',80)
  }else{
    d3.select('.thing-2').transition()
      .delay(500)
      .duration(1000)
      .attr('height',100)
      .attr('y',0)
  }
  
  first = !first;

  },2500)
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<!DOCTYPE html>
<html>
  <head>
    <meta charset=utf-8 />
    <title>SVG colored patterns via mask</title>
    <style>
      /* FF seems to need explicit dimensions */
      svg {
        width: 500px;
        height: 500px;
      }

      rect.hbar {
        mask: url(#mask-stripe)
      }

      .thing-1 {
        fill: blue;
      }


      .thing-2 {
        fill: green;
      }
    </style>
  </head>
  <body>
    <svg>
      <defs>
        <pattern id="pattern-stripe" 
          width="4" height="4" 
          patternUnits="userSpaceOnUse"
          patternTransform="rotate(45)">
          <rect width="2" height="4" transform="translate(0,0)" fill="white"></rect>
        </pattern>
        <mask id="mask-stripe">
          <rect x="0" y="0" width="100%" height="100%" fill="url(#pattern-stripe)" />
        </mask>      
      </defs>

      <!-- bar chart -->
      <rect class="hbar thing-2" x="0" y="0" width="50" height="100"></rect>
      <rect class="hbar thing-2" x="51" y="50" width="50" height="50"></rect>
      <rect class="hbar thing-2" x="102" y="25" width="50" height="75"></rect>
      
      <!-- horizontal bar chart -->
      <rect class="hbar thing-1" x="0" y="200" width="10" height="50"></rect>
      <rect class="hbar thing-1" x="0" y="251" width="123" height="50"></rect>
      <rect class="hbar thing-1" x="0" y="302" width="41" height="50"></rect>
      
    </svg>
  </body>
</html>

于 2016-05-11T06:13:36.857 回答