如何设置条宽

Question

请帮助您了解如何为动态值设置条宽。我想要单个值的固定宽度：

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 var config = {
          type: 'bar',
          data: {
              labels: ["January"],
              datasets: [
           {
                  type: 'bar',
                  label: 'Dataset 1',
                  backgroundColor: "red",
                  data: [65,4,30,20,70],
              }, {
                  type: 'bar',
                  label: 'Dataset 3',
                  backgroundColor: "blue",
                  data: [-65]
              }]
          },
          options: {
              scales: {
                  xAxes: [{
                      stacked: true
                  }],
                  yAxes: [{
                      stacked: true
                  }]
              }
          }
      };

      var ctx = document.getElementById("myChart").getContext("2d");
      new Chart(ctx, config);

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   <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.0/Chart.bundle.min.js"></script>

<div style="width:600px">

       <canvas id="myChart"></canvas>
</div>

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