包含負值的面積圖

下面是一個包含負值的面積圖的示例。在 Google 圖表配置語法章節中，我們已經看到了用於繪製此圖表的配置。因此，讓我們看看完整的示例。

配置

我們已經使用 area 配置來顯示基於面積的圖表。

//area chart
var chart = new google.visualization.AreaChart(document.getElementById('container'));

示例

googlecharts_area_negative.htm

即時演示

<html>
   <head>
      <title>Google Charts Tutorial</title>
      <script type = "text/javascript" src = "https://www.gstatic.com/charts/loader.js">
      </script>
      <script type = "text/javascript">
         google.charts.load('current', {packages: ['corechart']});     
      </script>
   </head>
   
   <body>
      <div id = "container" style = "width: 550px; height: 400px; margin: 0 auto">
      </div>
      <script language = "JavaScript">
         function drawChart() {
            // Define the chart to be drawn.
            var data = google.visualization.arrayToDataTable([
               ['Year', 'Sales', 'Expenses'],
               ['2013',  1000,      400],
               ['2014',  -1170,      460],
               ['2015',  -660,       1120],
               ['2016',  1030,      540]
            ]);

            var options = {
               isStacked: true,
               title: 'Population',
               hAxis: {title: 'Year',titleTextStyle: {color: '#333'}},
               vAxis: {minValue: 0}
            };  

            // Instantiate and draw the chart.
            var chart = new google.visualization.AreaChart(document.getElementById('container'));
            chart.draw(data, options);
         }
         google.charts.setOnLoadCallback(drawChart);
      </script>
   </body>
</html>

結果

驗證結果。

googlecharts_area_charts.htm

列印頁面