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Transversal structures on triangulations, combinatorial study and straightline drawing
, 2007
"... This article focuses on a combinatorial structure specific to triangulated plane graphs with quadrangular outer face and no separating triangle, called irreducible triangulations. The structure has been introduced by Xin He under the name of regular edgelabelling and consists of two transversal bip ..."
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Cited by 26 (5 self)
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This article focuses on a combinatorial structure specific to triangulated plane graphs with quadrangular outer face and no separating triangle, called irreducible triangulations. The structure has been introduced by Xin He under the name of regular edgelabelling and consists of two transversal bipolar orientations. For this reason, the terminology used here is that of transversal structures. The main results obtained in the article are a bijection between irreducible triangulations and ternary trees, and a straightline drawing algorithm for irreducible triangulations. For a random irreducible triangulation with n vertices, the grid size of the drawing is asymptotically with high probability 11n/27 × 11n/27 up to an additive error of O ( √ n). In contrast, the best previously known algorithm for these triangulations only guarantees a grid size (⌈n/2 ⌉ − 1) × ⌊n/2⌋.
Transversal structures on triangulations, with application to straight line drawing
 LECTURE NOTES IN COMPUTER SCIENCE
, 2005
"... We define and study a structure called transversal edgepartition related to triangulations without non empty triangles, which is equivalent to the regular edge labeling discovered by Kant and He. We study other properties of this structure and show that it gives rise to a new straightline drawing ..."
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Cited by 14 (6 self)
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We define and study a structure called transversal edgepartition related to triangulations without non empty triangles, which is equivalent to the regular edge labeling discovered by Kant and He. We study other properties of this structure and show that it gives rise to a new straightline drawing algorithm for triangulations without non empty triangles, and more generally for 4connected plane graphs with at least 4 border vertices. Taking uniformly at random such a triangulation with 4 border vertices and n vertices, the size of the grid is almost surely n
Planar Drawings of Plane Graphs
, 2000
"... this paper first we review known two methods to find such drawings, then explain a hidden relation between them, and finally survey related results. ..."
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Cited by 13 (3 self)
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this paper first we review known two methods to find such drawings, then explain a hidden relation between them, and finally survey related results.
Convex drawings of graphs with nonconvex boundary
 Proc. of WG 2006
, 2006
"... Abstract. In this paper, we study a new problem of finding a convex drawing of graphs with a nonconvex boundary. It is proved that every triconnected plane graph whose boundary is fixed with a starshaped polygon admits a drawing in which every inner facial cycle is drawn as a convex polygon. Such ..."
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Cited by 10 (2 self)
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Abstract. In this paper, we study a new problem of finding a convex drawing of graphs with a nonconvex boundary. It is proved that every triconnected plane graph whose boundary is fixed with a starshaped polygon admits a drawing in which every inner facial cycle is drawn as a convex polygon. Such a drawing, called an innerconvex drawing, can be obtained in linear time. 1
Straightline drawing of quadrangulations
 In Proceedings of Graph Drawing’06
, 2006
"... Abstract. This article introduces a straightline drawing algorithm for quadrangulations, in the family of the facecounting algorithms. It outputs in linear time a drawing on a regular W ×H grid such that W +H = n − 1 − ∆, where n is the number of vertices and ∆ is an explicit combinatorial paramet ..."
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Cited by 6 (4 self)
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Abstract. This article introduces a straightline drawing algorithm for quadrangulations, in the family of the facecounting algorithms. It outputs in linear time a drawing on a regular W ×H grid such that W +H = n − 1 − ∆, where n is the number of vertices and ∆ is an explicit combinatorial parameter of the quadrangulation. 1
RectangleofInfluence Drawings of FourConnected Plane Graphs (Extended Abstract)
, 2005
"... A rectangleofinfluence drawing of a plane graph G is no vertex in the proper inside of the axisparallel rectangle defined by the two ends of any edge. In this paper, weshow that any 4connected plane graph G rectangleofinfluence drawing in an integer grid such that W + H n, where n is the numb ..."
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Cited by 2 (0 self)
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A rectangleofinfluence drawing of a plane graph G is no vertex in the proper inside of the axisparallel rectangle defined by the two ends of any edge. In this paper, weshow that any 4connected plane graph G rectangleofinfluence drawing in an integer grid such that W + H n, where n is the numberofvertices in G, W is the width and H is the height of the grid. Thus the area W \ThetaH of the grid is at most d(n;1)=2e\Delta b(n;1)=2c. Our bounds on the grid sizes are optimal in a sense that there exist an infinite number of 4connected plane graphs whose drawings need grids such that W +H = n;1andW \Theta H = d(n ; 1)=2e\Delta b(n ; 1)=2c. We also showthatthe drawing can be found in linear time.
Convex Drawings of Hierarchical Planar Graphs and Clustered Planar Graphs
"... Abstract: Hierarchical graphs are graphs with layering structures; clustered graphs are graphs with recursive clustering structures. Both have applications in VLSI design, CASE tools, software visualisation and visualisation of social networks and biological networks. Straightline drawing algorithm ..."
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Abstract: Hierarchical graphs are graphs with layering structures; clustered graphs are graphs with recursive clustering structures. Both have applications in VLSI design, CASE tools, software visualisation and visualisation of social networks and biological networks. Straightline drawing algorithms for hierarchical graphs and clustered graphs have been presented in [P. Eades, Q. Feng, X. Lin and H. Nagamochi, Straightline drawing algorithms for hierarchical graphs and clustered graphs, Algorithmica, 44, pp. 132, 2006]. A straightline drawing is called a convex drawing if every facial cycle is drawn as a convex polygon. In this paper, it is proved that every internally triconnected hierarchical plane graph with the outer facial cycle drawn as a convex polygon admits a convex drawing. We present an algorithm which constructs such a drawing. We then extend our results to convex representations of clustered planar graphs. It is proved that every internally triconnected clustered plane graph with completely connected clustering structure admits a convex drawing. We present an algorithm to construct a convex drawing of clustered planar graphs.