To understand the significance of RasterDGN, one must first distinguish between the two fundamental data types in CAD: raster and vector. Vector data, the native format of MicroStation DGN files, consists of mathematical coordinates that define lines, arcs, and shapes. It is infinitely scalable and intelligent. Conversely, raster data is composed of a grid of pixels, similar to a digital photograph. A scanned blueprint is a raster image; it lacks the underlying intelligence of a CAD drawing but contains a visual record of the design. RasterDGN is the technology that allows MicroStation to natively display, reference, and manipulate these pixel-based images alongside vector geometry without requiring file conversion or external software.
Unlike MicroStation’s native clipping, which only hides parts of an image, RasterDgn can permanently delete unneeded portions of the file in one step. Why Use RasterDgn Over Native Tools? microstation rasterdgn
It is frequently used in industries such as transportation, government, and utilities to clean up legacy paper drawings that have been scanned into digital formats. To understand the significance of RasterDGN, one must
Use standard MicroStation tools (Place Line, SmartLine) to trace walls, roads, or contours. Conversely, raster data is composed of a grid
Save your DGN. The raster is referenced—if you share the DGN, share the JPG and its world file as well.
Goal: Convert a scanned paper site plan (JPG) into a clean, scaled DGN drawing.