Kinderman et al. have introduced a knot layout in which every segment of a knot diagram is a circular arc, also called Lombardi drawings.
We describe and discuss the transformation of a knot diagram in PD notation into a knot drawing. We first translate PD notation into a knot graph and it's primal-dual multigraph pair. We calculate a primal-dual circle packing, in which we find the circular arcs representing knot diagram segments. If the primal-dual multigraph pair cannot be transformed into a primal-dual circle packing directly we first extend it. The whole procedure was implemented and using it we generated 664 Lombardi drawings.
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