如何在ASP.NET中使用Google Charts API JavaScript将条形图标签显示为绝对值而不是负值

我有一个堆叠条形图，我希望将显示的条形图标签值更改为绝对值，而不是负值.我使用负值只是为了正确地绘制图表，然而，真正的值不是负值.

忽略灰色条标签的位置错误，如何将图表视图和鼠标悬停显示的-676的显示值更改为绝对值(676)？

JavaScript:如下所示:

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
  <script type="text/javascript">

      google.charts.load('current', { packages: ['corechart'] });
      google.charts.setOnLoadCallback(drawChart);

      function drawChart() {
          var data = new google.visualization.DataTable();

          var jsonList = @(Json.Serialize(Model.listAllAircraftChartQuarterly))

          var title = 'Quarterly Aircraft Transaction Trend';

          data.addColumn('string', 'Quarter');
          data.addColumn('number', '2023');
          data.addColumn('number', '2022');
          data.addColumn('number', '% Change');
          data.addRows(jsonList.map((p) => {
              return [p.yearQuarter, p.year2top, p.year3bottom, p.year2percent];
          }));

          var formatPercent = new google.visualization.NumberFormat({ pattern: '#.#%' });
          formatPercent.format(data, 3);

          var view = new google.visualization.DataView(data);
          view.setColumns([0, 1,
              {
                  calc: "stringify",
                  sourceColumn: 1,
                  type: "string",
                  role: "annotation"
              },
              2,
              {
                  calc: "stringify",
                  sourceColumn: 2,
                  type: "string",
                  role: "annotation"
              },
              3,
              {
                  calc: "stringify",
                  sourceColumn: 3,
                  type: "string",
                  role: "annotation"
              }
          ]);
          var options = {
              title: title,
              titlePosition: 'out',
              isStacked: true,

              seriesType: "bars",
              vAxes: {
                  0: {
                      textPosition: 'out',
                      viewWindowMode: 'pretty',
                      title: "",
                      viewWindow: { min: -1100, max: 1100 },
                      gridlines: { color: 'lightgray' },
                  },
                  1: {
                      textPosition: 'out',
                      viewWindow: { min: -1, max: 1 },
                      format: 'percent',
                      gridlines: { color: 'transparent' }
                  },
              },
              series: {
                  0: { targetAxisIndex: 0, color: 'blue' },
                  1: { targetAxisIndex: 0, color: 'gray' },
                  2: { targetAxisIndex: 1, color: 'red', type: 'line', lineWidth: 1, lineDashStyle: [4, 4], pointSize: 5 },
              },
              width: '100%',
              height: '300',

              legend: { position: 'top' },
              chartArea: {
                  height: '100%',
                  width: '100%',
                  top: 48,
                  left: 60,
                  right: 60,
                  bottom: 75
              },
              annotations: {
                  highContrast: false,
                  textStyle: {
                      color: 'red',
                      fontSize: 12,
                      bold: true
                  },
                  alwaysOutside: true
              },
          }

          var chart = new google.visualization.ComboChart(document.getElementById('primaryYear2and3'));
          chart.draw(view, options);

          document.getElementById('downloadimg2and3').innerHTML = '<a download="google-chart-image" href="' + chart.getImageURI() +
              '"><button type="button" class="btn btn-outline-dark btn-sm opacity-25 ms-4 mb-3">Download Chart Image</button></a>';

          window.addEventListener('resize', drawChart, false);
      }
  </script>

研究了现有帖子的绝对值和Math.abs()用法.