[HTML][HTML] Upward and quasi-upward planarity testing of embedded mixed graphs

C Binucci, W Didimo, M Patrignani - Theoretical Computer Science, 2014 - Elsevier
Mixed graphs have both directed and undirected edges and have received considerable
attention in the literature. We study two upward planarity testing problems for embedded …

Computing k-modal embeddings of planar digraphs

JJ Besa, G Da Lozzo, MT Goodrich - arXiv preprint arXiv:1907.01630, 2019 - arxiv.org
Given a planar digraph $ G $ and a positive even integer $ k $, an embedding of $ G $ in the
plane is k-modal, if every vertex of $ G $ is incident to at most $ k $ pairs of consecutive …

Computing quasi-upward planar drawings of mixed graphs

C Binucci, W Didimo - The Computer Journal, 2016 - academic.oup.com
A mixed graph has both directed and undirected edges. We study how to compute a
crossing-free drawing of an embedded planar mixed graph, such that it is upward 'as much …

A visualization framework and user studies for overloaded orthogonal drawings

W Didimo, EM Kornaropoulos… - Computer Graphics …, 2018 - Wiley Online Library
Overloaded orthogonal drawing (OOD) is a recent graph visualization style specifically
conceived for directed graphs. It merges the advantages of some popular drawing …

[HTML][HTML] 1-bend upward planar slope number of SP-digraphs

E Di Giacomo, G Liotta, F Montecchiani - Computational Geometry, 2020 - Elsevier
It is proved that every series-parallel digraph whose maximum vertex degree is Δ admits an
upward planar drawing with at most one bend per edge such that each edge segment has …

Parameterized and Approximation Algorithms for the Maximum Bimodal Subgraph Problem

W Didimo, FV Fomin, PA Golovach, T Inamdar… - … Symposium on Graph …, 2023 - Springer
A vertex of a plane digraph is bimodal if all its incoming edges (and hence all its outgoing
edges) are consecutive in the cyclic order around it. A plane digraph is bimodal if all its …

Intrinsic linking in directed graphs

JS Foisy, HN Howards, NR Rich - 2015 - projecteuclid.org
We extend the notion of intrinsic linking to directed graphs. We give methods of constructing
intrinsically linked directed graphs, as well as complicated directed graphs that are not …

Upward planarity testing of embedded mixed graphs

C Binucci, W Didimo - International Symposium on Graph Drawing, 2011 - Springer
LNCS 7034 - Upward Planarity Testing of Embedded Mixed Graphs Page 1 Upward Planarity
Testing of Embedded Mixed Graphs * Carla Binucci and Walter Didimo Dip. Ing. Elettronica e …

1-bend upward planar drawings of SP-digraphs

E Di Giacomo, G Liotta, F Montecchiani - International Symposium on …, 2016 - Springer
It is proved that every series-parallel digraph whose maximum vertex-degree is\varDelta
admits an upward planar drawing with at most one bend per edge such that each edge …

Quasi-upward planar drawings of mixed graphs with few bends: heuristics and exact methods

C Binucci, W Didimo - International Workshop on Algorithms and …, 2014 - Springer
A mixed graph has both directed and undirected edges. We study how to compute a
crossing-free drawing of a planar embedded mixed graph, such that it is upward “as much …