This book originally appeared in 1999 and has been updated and re-written a decade later. Geographic information system (GIS) modeling is the key to understanding GIS – and how to communicate to others about the world we live in through mapping and cartography. The information and knowledge included in 'Modeling Our World' is the foundation for understanding ArcGIS and geodatabase concepts. Many of the descriptions and concepts in this book apply to all GIS.
The GIS 20 Essential Skills is a guide that describes the most commonly used skills used by geographic information system (GIS) users. The book is the result of many years experience gathered through ArcGIS training and education programs by the author. As a result, the book is filled with powerful tips, information and approaches for working with GIS effectively. This material will get new and experienced users up and running quickly and solves many basic problems and questions that arise when using GIS.
Spatial data are important to scientific studies and research. They are the raw pieces of information that inform us about the processes involved in many fields. Scientists involved in oceanography, forestry, soil science, energy, human geography, health, transportation, urban planning and many other field collect, manage, process and visualize both simple and complex processes using spatial information. In many cases we find that these activities using both commercially available tools and freely available tools. In some cases, due to the nature of the work under study, specially designed and programmed software tools and technologies are developed that enable the active pursuit of spatially related data and methodologies.