             Input dataset provides the <u>group names</u> and their
                    corresponding <u>numeric value</u>.
                  </li>
                  <br />
                  <li>
                    The first step is to use the <code>pie()</code> function. It
                    takes this input and return the coordinates of each part of
                    the pie.
                  </li>
                  <br />
                  <li>
                    For instance: <code>a:9</code> be