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The Approximate Rectangle of Influence Drawability Problem

机译:影响可绘制性问题的近似矩形

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We prove that all planar graphs have an open/closed (ε_1, ε_2)-rectangle of influence drawing for ε_1> 0 and ε_2 > 0, while there are planar graphs which do not admit an open/closed (ε_1,0)-rectangle of influence drawing and planar graphs which do not admit a (0,ε_2)-rectangle of influence drawing. We then show that all outerplanar graphs have an open/closed (0, ε_2)-rectangle of influence drawing for any ε_2≥ 0. We also prove that if ε_2 > 2 an open/closed (0,ε_2)-rectangle of influence drawing of an outerplanar graph can be computed in polynomial area. For values of ε_2 such that ε_2 ≤2, we describe a drawing algorithm that computes (0, ε_2)-rectangle of influence drawings of binary trees in area O(n~(2+f(ε_2))), where f(ε_2) is a logarithmic function that tends to infinity as ε2 tends to zero, and n is the number of vertices of the input tree.
机译:我们证明了对于ε_1> 0和ε_2> 0的所有平面图都有影响图的开/闭(ε_1,ε_2)-矩形,而有些平面图不允许开/闭(ε_1,0)矩形不允许影响图的(0,ε_2)矩形的影响图和平面图。然后,我们证明对于任何ε_2≥0,所有外平面图都具有影响图的开/闭(0,ε_2)-矩形。我们还证明,如果ε_2> 2,则影响图的开/闭(0,ε_2)-矩形可以在多项式区域中计算外平面图的坐标。对于ε_2等于ε_2≤2的值,我们描述了一种绘制算法,该算法计算区域O(n〜(2 + f(ε_2)))中二叉树的(0,ε_2)-影响图的矩形,其中f(ε_2 )是对数函数,随着ε2趋于零,趋向于无穷大,而n是输入树的顶点数。

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