By Kang-tsung Chang
Geographic Information Systems (GIS) have become an indispensable tool across a myriad of disciplines, from urban planning and environmental science to public health and business analytics. For newcomers to this powerful technology, a well-structured and accessible textbook is paramount. Introduction to Geographic Information Systems (9th Edition) by Kang-tsung Chang continues its legacy as a foundational text, aiming to provide a comprehensive yet approachable entry point into the world of GIS. This review will explore the key strengths and potential areas for enhancement in this latest edition, assessing its effectiveness for its intended audience.
The 9th edition of Chang's Introduction to GIS maintains its core strength: a clear and systematic pedagogical approach. The book is meticulously organized, guiding readers through fundamental GIS concepts in a logical progression. It typically begins with the theoretical underpinnings of geographic data, progresses through data acquisition, management, analysis, and finally, visualization and application. Each chapter is designed to build upon previous knowledge, making complex topics more digestible for beginners. The author's writing style is straightforward and avoids excessive jargon, which is particularly beneficial for students from diverse academic backgrounds who might be encountering GIS for the first time.
One of the most commendable features of this textbook is its balance between theoretical concepts and practical application. While it thoroughly explains the 'what' and 'why' of GIS, it also delves into the 'how.' The book incorporates numerous hands-on exercises and case studies, often utilizing widely available GIS software (though specific software might vary by edition or accompanying materials). These practical components are crucial for reinforcing theoretical knowledge and developing essential skills. The exercises are typically well-designed, allowing students to apply concepts directly and gain experience with real-world GIS operations. This practical emphasis makes the learning experience more engaging and prepares students for actual GIS work.
Furthermore, the 9th edition strives for comprehensiveness in its coverage of core GIS topics. It addresses key areas such as map projections, coordinate systems, spatial data models (raster and vector), geodatabases, spatial analysis techniques (e.g., buffering, overlay, network analysis), and cartographic principles. The inclusion of updated information on emerging trends, such as web GIS, cloud computing in GIS, and advancements in data collection technologies (e.g., drones, LiDAR), ensures the book remains relevant in a rapidly evolving field. The visual aids, including diagrams, screenshots, and maps, are generally clear and effectively illustrate the concepts being discussed.
However, like any extensive textbook, there are areas where the 9th edition could potentially be refined. While the book aims for broad applicability, the specific software examples or exercises might sometimes lag behind the very latest software versions, which is an inherent challenge in a field with frequent software updates. Instructors and students may need to adapt exercises to newer interfaces or functionalities. Additionally, while comprehensive, some advanced analytical techniques or specialized applications might receive only a brief overview, necessitating supplementary resources for those seeking deeper dives into particular sub-fields of GIS.
In conclusion, Kang-tsung Chang's Introduction to Geographic Information Systems (9th Edition) stands as a highly effective and reliable textbook for anyone beginning their journey in GIS. Its clear explanations, logical structure, strong emphasis on practical application through exercises, and comprehensive coverage of fundamental concepts make it an excellent choice for introductory university courses or self-study. While the pace of software development necessitates ongoing adaptation, the foundational knowledge and skills imparted by this book are enduring. For students and professionals seeking a solid grounding in GIS, this edition remains a highly recommended resource.