Data visualization is primarily aimed at conveying and communicating information clearly and effectively with the help of graphical means. But that doesn't mean that data visualization has to be boring because it has to fulfill its functional purpose, or that it has to be extremely complex in order to look colorful. In order to effectively communicate ideas, aesthetic form and function need to go hand in hand, visually communicating key aspects and features to achieve insight into a rather sparse yet complex data set. However, designers often do not have a good grasp of the balance between design and functionality, creating flashy data visualizations that fail to achieve their primary purpose, which is to convey and communicate information.

Data visualization is closely related to information graphics, information visualization, scientific visualization, and statistical graphics. Currently, data visualization is an extremely active and critical aspect of research, teaching and development. The term "data visualization" unifies the mature field of scientific visualization with the younger field of information visualization.

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