Javascript 带重要星号的条形图

我是D3JS新手

我想创建一个简单的条形图，带有星号的重要性条形图，如下所示

我该怎么做呢？显然，我可以根据文档中的示例制作正常的条形图，但我在条形图/星号方面做得不够

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谢谢你做了这样的定制，我只需要自己画路径。例如，我在大约15分钟内完成了这项工作。请注意，我伪造了错误条计算，它假设第一条是最高的

  svg.selectAll(".errorBar")
    .data(data)
    .enter()
    .append("path")
    .attr("d", function(d, i) {
      var rV = "";
      if (i === 0) {
        rV += "M" + (x(d.letter) + x.rangeBand() * 0.5) + " " + y(d.value);
        rV += "L" + (x(d.letter) + x.rangeBand() * 0.5) + " " + (y(firstValue.value) - ((data.length - 1) * 25));
        return rV;
      }
      var errorY = (y(d.value) - y(d.value) / 6);
      rV += "M" + (x(d.letter) + x.rangeBand() * 0.5) + " " + y(d.value);
      rV += "L" + (x(d.letter) + x.rangeBand() * 0.5) + " " + errorY;
      rV += "M" + (x(d.letter) + x.rangeBand() * 0.25) + " " + errorY;
      rV += "L" + (x(d.letter) + x.rangeBand() * 0.75) + " " + errorY;
      rV += "M" + (x(d.letter) + x.rangeBand() * 0.5) + " " + (errorY - 10);
      rV += "L" + (x(d.letter) + x.rangeBand() * 0.5) + " " + (y(firstValue.value) - (i * 25));
      rV += "M" + (x(firstValue.letter) + x.rangeBand() * 0.5) + " " + (y(firstValue.value) - (i * 25));
      rV += "L" + (x(d.letter) + x.rangeBand() * 0.5) + " " + (y(firstValue.value) - (i * 25));
      return rV;

    })
    .attr("stroke", "black")
    .attr("stroke-width", 2)


  svg.selectAll(".starText")
    .data(data.filter(function(d,i){ return i > 0; }))
    .enter()
    .append('text')
    .attr('dx',function(d,i){
      return ((x(d.letter) + x.rangeBand()) / 2);
    })
    .attr('y', function(d,i){
      return y(firstValue.value) - ((i+1) * 25);
    })
    .style('text-anchor', 'start')
    .text('****')

例如

看起来像：