Raster Data 2 : The representation of spatial data as regular grid cells or tessellations. Cells may be subdivided or aggregated depending on the variety and density of features to be modeled
Association of Bay Area Governments (ABAG) - Regional Planning Agencies, Glossary of Terms, San Francisco, CA, USA 2003. http://www.abag.ca.gov/bayarea/eqmaps/eqfloods/fgl ossry.html, (ND/ Flood - Amer) {6}