isions</p></dd>


<dt>polygon.vertex</dt>
<dd><p>The number of vertice of the circle. Default to be 100. If polygon.vertex=4 then diamonds applies. If polygon.vertex=6, then hexagon applies.</p></dd>


<dt>name.text</dt>
<dd><p>whether to print the region names on the circles or polygons.</p></dd>


<dt>dist.ratio</dt>
<dd><p>The threshold to determine whether an attract force is added. It is applied to the ratio of the distance between two centroids and the sum of the two radii.</p></dd>


<dt>iteration</d