
handle: 11590/132330 , 11590/171446
We investigate the computational complexity of the following problem. Given a planar graph in which some vertices have already been placed in the plane, place the remaining vertices to form a planar straight-line drawing of the whole graph. We show that this extensibility problem, proposed in the 2003 "Selected Open Problems in Graph Drawing" [1], is NP-hard.
Graph drawing, Straight-line drawing, planar graphs, computational complexity
Graph drawing, Straight-line drawing, planar graphs, computational complexity
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