               <a
                  href="http://www.tutorialsteacher.com/d3js/create-pie-chart-using-d3js"
                  >TutorialsTeacher</a
                >
              </li>
            </ul>
            <ul>
              <li>
                <i>Arc generator (centroid) - </i>in
                <a
                  href="https://bl.ocks.org/d3indepth/c9fd848b9410cc543a437b34c266ac64"
                  >d3indepth</a
                >
              </li>
            </ul>
          </div>
        