Visualization is a research area that focuses on the creation of graphical representations of data to help people understand complex information. It involves the use of computer algorithms and techniques to display data in a visual format that is easy to interpret and analyze. Visualization can be used in various fields such as science, engineering, business, and medicine to help researchers, analysts, and decision-makers gain insights from large and heterogeneous datasets. It often involves the use of tools such as charts, graphs, maps, and interactive dashboards to communicate data effectively to a wide audience.