The Geospatial Data Abstraction Library (GDAL), including its subproject OGR, is the preeminent open source data access library that provides GIS commands and tools. It is used behind most of the open source geospatial applications and also sits behind many of the leading proprietary GIS applications on the market today. Along with the programming libraries come several powerful command line utilities, intended to be run by being typed into a terminal or command prompt window. The utilities include tools for examining, converting, transforming, building and analysing data. This book is a collection of the GDAL and OGR documentation, but also includes substantial new content designed to help guide you in using the utilities to solve your current data problems. Inside you'll find a quick reference for looking up the right syntax and example usage quickly.