Description: Overlay analysis involves comparing multiple datasets by superimposing them on one another, allowing for the visualization of patterns, trends, and relationships that may not be evident when viewing each dataset separately. This technique is particularly useful in data visualization, as it facilitates the identification of correlations and discrepancies between different variables. By overlaying data, analysts can gain a deeper understanding of the information, enabling them to make more informed decisions. The resulting visualizations can take various forms, such as line graphs, heat maps, or scatter plots, where different datasets are represented in the same visual space. This technique not only enhances the clarity of information but also allows users to interact with the data more effectively, exploring different dimensions and scenarios. In a world where the amount of available data is overwhelming, overlay analysis becomes an essential tool for analysts, researchers, and decision-makers, helping them break down complexity and extract meaningful insights from the presented information.