Graph Drawing : 9th International Symposium GD 2001 Vienna Austria September 23–26 2001 Revised Papers This book constitutes the thoroughly refereed post proceedings of the 9th International Symposium on Graph Drawing GD 2001 held in Vienna Austria in September 2001. The 32 revised full papers presented were carefully reviewed and selected from 66 paper submissions. Also included are a corrected version of a paper from the predecessor volume short reports on the software systems exhibition two papers of the special session on graph exchange formats and a report on the annual graph drawing contests. The papers are organized in topical sections on hierarchical drawing planarity crossing theory compaction planar graphs symmetries interactive drawing representations aesthetics 2D and 3D embeddings data visualization floor planning and planar drawing