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
points
8.4. GIS Book: Merge
Merge tool can be used to merge two or more entities into a single layer. All merging entities must be of the same type (points, lines or polygons). Caution should … Read more
8.3. GIS Book: Clip
The Clip tool allows you to trim part of an entity based on the perimeter of a polygonal layer (Figure 35). The polygonal layer is used to limit the extent … Read more
7. GIS Book: Tables administration
Tables are used to store descriptive information. In ArcGIS they are usually linked to a vector layer or appear individually. The alphanumeric information forming a table can be stored as … Read more
Import XY points into TerrSet
Although the process of importing points or UTM coordinates into TerrSet (formerly Idrisi) seems complicated, it is actually a simple task. You can import a table in XLS, CSV, TXT, … Read more
Calculate the distance between two or more points in ArcGIS
Determine the distance between two or more points, it is one of the most basic tasks performed by the people involved in the GIS environment, distance measurements will be more … Read more