What is a Contour Map?
A contour map is a graphical representation of the terrain or surface of an area. Instead of showing mountains, valleys, and other features in 3D, it uses lines, called contour … Read more
elevation
9.2. GIS Book: Digital elevation models
A Digital Elevation Model (DEM) is a raster representation of a continuous surface. It usually refers to the earth’s surface, using a set of points whose X, Y and Z … Read more
9. GIS Book: Spatial analyst
Spatial analysis is the process of modeling and obtaining results through computer processing and then examining and interpreting the results of the model. Spatial analysis is useful for assessing suitability … Read more