Author Archives: Leo Hsu

Leo Hsu is a co-principal of Paragon Corporation, a database consulting company based in Boston. He has over 15 years of professional experience developing and thinking about databases for organizations large and small. Leo holds an MS degree in engineering of economic systems from Stanford University and BS degrees in mechanical engineering and economics from the Massachusetts Institute of Technology. He co-authored PostGIS in Action.

PostGIS in Action, 3rd Edition

PostGIS in Action, Third Edition shows you how to solve real-world geodata problems. You’ll go beyond basic mapping, and explore custom functions for your applications. Inside this fully updated edition, you’ll find coverage of new PostGIS features such as PostGIS Window functions, parallelization of queries, and outputting data for applications using JSON and Vector Tile functions.