The book "Data Visualization" delves into the philosophical foundations of data visualization and explores the intersection of data, perception, and knowledge. It addresses the epistemological questions of how data visualization shapes our understanding of the world and the ontological questions of how data visualization represents reality. The book also covers ethical considerations in data visualization, including issues of representation, bias, and privacy. Additionally, it examines the emerging trends and technological advancements in data visualization and the impact of philosophy on the future of data visualization. The authors highlight the significance of a philosophical perspective in data visualization and its potential to enhance our ability to comprehend and communicate complex data.