196 pages | 70 Color Illus.
Coordinates are integral building tools for GIS, cartography, surveying and are vital to the many applications we use today such as smart phones, car navigation systems and driverless cars. Basic GIS Coordinates, Third Edition grants readers with a solid understanding of coordinates and coordinate systems and how they operate as well as valuable insight into what causes them to malfunction. This practical and comprehensive guide lays out the foundation of a coordinate system and the implications behind building it as it elaborates on heights, two coordinate systems, and the rectangular system.The previous editions described horizontal and vertical datums such as the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88). Both will be replaced in 2022 or thereabouts. The National Geodetic Survey (NGS) plans to replace NAD83 with a new semi-dynamic terrestrial reference frame for North America and a new vertical datum will replace NAVD88. The foundation of the new vertical datum will be a temporally tracked gravimetric geoid. The interim period is intended to smooth the transition to the new paradigm and this new edition explores the changes and provides assistance in understanding them.
"Dr. Van Sickle has made yet another contribution to the field with this update on his popular book, Basic GIS Coordinates. As demonstrated with this book, he has a unique capability for explaining the complications and nuances of coordinate systems in an understandable manner. This book should have a prominent place in the library of the many people having a role in using coordinate systems for their work and everyday life."
—Lynn E. Johnson, University of Colorado, Denver, USA
"No GIS educator or practitioner should be without Basic GIS Coordinates. Jan Van Sickle explains some of our field’s most challenging, yet fundamental, concepts with unsurpassed clarity. His combination of long professional experience, deep study, and clear expression prepare him uniquely to create this invaluable reference work. Meanwhile, the impending replacement of North America’s primary horizontal and vertical datums add a new sense of urgency to this welcome 3rd edition."
—David DiBiase, Esri, Redlands, California, USA
"This book address the issue of accurately representing our 3D planet in a 2D forum. The author covers the traditional ways of representing location in X,Y, and Z space and the challenges with these techniques; and provides a comprehensive view of coordinate systems, datums, and other details associated with location description."
— Kumar Navulur, PhD, Frederick, Colorado, USA
"The Basic GIS Coordinates by Dr. Van Sickle has become a favorite book for many of my students. I would recommend this book to everybody who wants to learn the foundations of the coordinate systems, datums, and basic geodetic principals. There are several other books on this subject, but Basic GIS Coordinates stands above all of them for one simple reason: the genuine way of describing complex scientific principals in plain English without extensive heavy mathematics. I strongly recommend."
— Apostol Panayotov, University of Colorado, Denver, USA
"Basic GIS Coordinates is a ‘must have’ survival guide for everyone in this age of ubiquitous digital locations. Jan Van Sickle is the ultimate spatial adventurer with a lifetime of achievement who has ‘been there, done that, got the t-shirt and took a selfie.’ He informs, educates and guides the spatial consumer through the constructs, assumptions and limitations intrinsic to accurately representing the rough irregular surface of our 3-D world on flat 2-D surfaces, digital or otherwise. Navigating the uninitiated through key elements of coordinate systems, datums, reference frames, transformations, and earth models may loom daunting, but in Basic GIS Coordinates it is a pleasurable and enlightening journey. In stark contrast to the Alice in Wonderland truism ‘If you don’t know where you are going any road will get you there’, Jan Van Sickle clearly illuminates for the reader which road to pick, where it leads and how to consistently get there."
— Michael Harris, TigerShark Consulting, Livermore, Alabama, USA
"As with previous editions of this fine book, the pithy opening sentence of the first chapter states, ‘Coordinates are slippery devils.’ And indeed, they are. Coordinates are fundamental to GIS, and to the widespread – and rapidly growing – arena of positioning-based products and services. A solid understanding of coordinates requires a working knowledge of the underlying geodetic principles. That is no simple thing, and Jan Van Sickle again succeeds in adroitly explaining such complex and subtle concepts. New to this third edition is the important and timely topic of replacing the existing U.S. datums with a modern dynamic system in 2022. Perhaps most remarkable is that so much material is capably explained in such a slender volume. An accessible and engaging style is augmented with numerous clean, clear illustrations. The result is a book that should have a prominent place in the library of GIS professionals. And despite the book’s title, it can serve as a valuable reference to geospatial practitioners in other fields, from surveying and engineering to photogrammetry and remote sensing. In short, it will find an audience with anyone who works with and wants a better understanding of those ‘slippery devils’ – coordinates."
— Michael L. Dennis, Geodetic Analysis, LLC, Sedona, Arizona, USA
Foundation of a Coordinate System
Datums to the Rescue
Latitude and Longitude
Building a Coordinate System
Legacy Geodetic Surveying
The Initial Point
The Terrestrial Reference Frame
The International Earth Rotation and Reference Systems Service
The North American Datum of 1983, World Geodetic System
Evolution of the Vertical Datum
Ellipsoid, Geoid, and Orthometric Heights
NGS Geoid Models
Replacement of NAVD88
Two Coordinate Systems
State Plane Coordinates
Universal Transverse Mercator Coordinates
The Rectangular System
The Initial Points
The Subdivision of Sections
Naming Aliquot Parts and Corners