Understanding Map Projections : GIS by ESRI

Redlands

2000

110 S.

Serie

1-58948-003-1

14645

400079409

Understanding Map Projections introduces and illustrates what geographic and projected coordinate systems are and the elements that make up each. This book explains in a clear and complete manner the terms and concepts of map projections and how they can be applied to your data. Whether you are familar with the science and mathematics involved with projecting geographical data or you are learning it for the first time, this book will help you understand what it is all about and why and when it should be done. You'll learn - The difference between geographic and projected coordinate systems. - What spheres and spheroids, datums, latitude, and longitude are and how they are calculated. - About the various map projections available and supported by ArcGIS. - What the parameters are in each projection, how they are used, and what they do to each map projection. Understanding the concepts involved with map projections will give you the ability to understand your data better and work with other spatial data in the ArcGIStm Desktop more effectively and more efficiently. Understanding Map Projections is an important building block when working with and setting up any geographic information system (GIS).