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arXiv · 1509.00684

L-Drawings of Directed Graphs

Patrizio Angelini·Giordano Da Lozzo·Marco Di Bartolomeo·Valentino Di Donato·Maurizio Patrignani·Vincenzo Roselli·Ioannis G. Tollis
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Abstract

We introduce L-drawings, a novel paradigm for representing directed graphs aiming at combining the readability features of orthogonal drawings with the expressive power of matrix representations. In an L-drawing, vertices have exclusive $x$- and $y$-coordinates and edges consist of two segments, one exiting the source vertically and one entering the destination horizontally. We study the problem of computing L-drawings using minimum ink. We prove its NP-completeness and provide a heuristics based on a polynomial-time algorithm that adds a vertex to a drawing using the minimum additional ink. We performed an experimental analysis of the heuristics which confirms its effectiveness.

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Patrizio Angelini, Giordano Da Lozzo, Marco Di Bartolomeo, Valentino Di Donato, Maurizio Patrignani, Vincenzo Roselli, Ioannis G. Tollis. 2015-09-02. L-Drawings of Directed Graphs. https://arxiv.org/abs/1509.00684

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