Digital raster graphic

A Digital Raster Graphic (DRG) is a type of digital image that represents rasterized data, typically derived from scanned maps or other source documents. DRGs are commonly used in geographic information systems (GIS) and cartography to provide a digital version of paper maps or aerial photographs. The key characteristics of DRGs include: 1. **Raster Format**: This means that the image is composed of a grid of pixels, where each pixel represents a color or a value.