Book Image

ArcGIS for Desktop Cookbook

By : Daniela C Docan
Book Image

ArcGIS for Desktop Cookbook

By: Daniela C Docan

Overview of this book

Table of Contents (18 chapters)
ArcGIS for Desktop Cookbook
About the Author
About the Reviewers

Creating models

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:

  • Variables (for example, input or derived data, buffer distance value, and SQL expression)

  • Tools (for example, system tools such as buffer and intersect)

  • Connectors (for example, data connector)

Another important aspect of a model...