Book Image

Mastering QGIS

Book Image

Mastering QGIS

Overview of this book

Table of Contents (18 chapters)
Mastering QGIS
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 8. Automating Workflows with the Graphical Modeler

This chapter will provide you with an overview of the graphical modeler (GM). First, we will introduce the modeler and explore the various inputs and algorithms available for models. Then, we will demonstrate via step-by-step examples how to develop a model that can be added to the Processing Toolbox. We will also cover more advanced topics, including nesting models and executing models iteratively. The specific topics that we will cover in this chapter are as follows:

  • An introduction to the graphical modeler

  • Opening the graphical modeler

  • Configuring the modeler and naming a model

  • Adding inputs

  • Adding algorithms

  • Running a model

  • Editing a model

  • Documenting a model

  • Saving, loading, and exporting models

  • Executing model algorithms iteratively

  • Nesting models

  • Using batch processing with models

  • Converting a model into a Python script