Raster data is a type of digital image represented by a grid of pixels, where each pixel contains a value that corresponds to a specific attribute, such as color or intensity. This format is commonly used in geographic information systems (GIS) to represent various types of information, including satellite imagery, aerial photographs, and digital elevation models. Each pixel in raster data has a defined location and size, making it suitable for analyzing continuous data, like temperature or elevation. Raster data can be processed and manipulated using various software tools, allowing users to perform tasks such as mapping, analysis, and visualization of spatial information.