Raster Data Structure
This type of data is based on a uniform grid of cells or pixels that represent an area of interest.Individual cells can be identified by the row andcolumn they occupy. Each cell is by definition
A homogeneous unit with respect to its attributes. This data formats are used in satellite imagery and Raster based GIS packages such as Grass, IDRISI, Sage, UNIX ARC/INFO, and the Spatial Analyst extension of ArcView 3.1.
Benefits of Raster Data Structure
1. Neighborhood locations can be analyzed.
2. Accommodates discrete data such as soils as well as continuous data such as topography.
3. Processing algorithms are easier than for vector data sets.
4. Compatible with other data collection and manipulation software such as in remote sensing.