According to the online ESRI GIS Dictionary, a model is an abstraction of reality used to represent objects, processes, and events. In ArcGIS, a geoprocessing model is created with the Model Builder built-in application, as shown in the following screenshot:
A model contains a process or more connected processes that are automatically executed when the model is run. A process consists of three elements: an input dataset (blue element), a tool (orange element), and an output dataset (green element). A geoprocessing model helps us to use various analysis operations and to create new data in a continuous workflow. In this way, the geoprocessing workflow can be reused and shared with other users. In
ModelBuilder, you can use three basic types of elements:
Another important aspect of a model...