title: Modifiy a primeNG Chart
body: <p>I need to modify the pie chart from PrimeNg <a href="https://www.primefaces.org/primeng/#/chart/pie" rel="nofollow noreferrer">https://www.primefaces.org/primeng/#/chart/pie</a> library to make a gauge instead, (just a semi-circle), is there someone who know how to do it? See bellow my code, I tried to change the option "circumference" but it doesn't do what I expect:</p>
  
  <p>Here's my app.html:</p>
  
  <pre><code> &lt;div class="chart1"&gt;
  
   &lt;p-chart type="pie" [data]="data" [options]="options"&gt;&lt;/p-chart&gt;
  
   &lt;/div&gt;
  </code></pre>
  
  <p>Here's my app.ts:</p>
  
  <pre><code>   this.data = {
          labels: ['Indispo', 'Dispo'],
          datasets: [
              {
                  data: [300, 50, 100],
                  backgroundColor: [
                      '#fffeff',
                      '#648e59'
                  ],
                  hoverBackgroundColor: [
                      '#fffeff',
                      '#648e59'
                  ]
              }]
          };
  
          this.options = {
            title: {
              display: true,
              circumference: 50 * Math.PI,
              text: 'Informations sur le fonctionnement',
              fontSize: 20
            },
          legend: {
            position: 'right'
          }
          };
  </code></pre>