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Journal Articles Theoretical Computer Science Year : 2019

On the Edge-length Ratio of Outerplanar Graphs


We show that any outerplanar graph admits a planar straight-line drawing such that the length ratio of the longest to the shortest edges is strictly less than 2. This result is tight in the sense that for any ε > 0 there are outerplanar graphs that cannot be drawn with an edge-length ratio smaller than 2 −ε. We also show that this ratio cannot be bounded if the embeddings of the outerplanar graphs are given.
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Dates and versions

hal-01886947 , version 1 (03-10-2018)



Sylvain Lazard, William Lenhart, Giuseppe Liotta. On the Edge-length Ratio of Outerplanar Graphs. Theoretical Computer Science, 2019, 770, pp.88--94. ⟨10.1016/j.tcs.2018.10.002⟩. ⟨hal-01886947⟩
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