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Mastering  QGIS

You're reading from   Mastering QGIS Go beyond the basics and unleash the full power of QGIS with practical, step-by-step examples

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Product type Paperback
Published in Sep 2016
Publisher Packt
ISBN-13 9781786460370
Length 486 pages
Edition 2nd Edition
Tools
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Authors (5):
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John Van Hoesen, GISP John Van Hoesen, GISP
Author Profile Icon John Van Hoesen, GISP
John Van Hoesen, GISP
Kurt Menke, GISP Kurt Menke, GISP
Author Profile Icon Kurt Menke, GISP
Kurt Menke, GISP
Paolo Corti Paolo Corti
Author Profile Icon Paolo Corti
Paolo Corti
Richard Smith Jr., GISP Richard Smith Jr., GISP
Author Profile Icon Richard Smith Jr., GISP
Richard Smith Jr., GISP
Luigi Pirelli Luigi Pirelli
Author Profile Icon Luigi Pirelli
Luigi Pirelli
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Table of Contents (13) Chapters Close

Preface 1. A Refreshing Look at QGIS 2. Creating Spatial Databases FREE CHAPTER 3. Styling Raster and Vector Data 4. Preparing Vector Data for Processing 5. Preparing Raster Data for Processing 6. Advanced Data Creation and Editing 7. Advanced Data Visualization 8. The Processing Toolbox 9. Automating Workflows with the Graphical Modeler 10. Creating QGIS Plugins with PyQGIS and Problem Solving 11. PyQGIS Scripting Index

Running a model


The model can be run either from the Processing modeler window or from the Processing Toolbox panel. To run a model from the Processing modeler window, click on the Run model button (). To run a model from the Processing Toolbox panel, first save and close the model. Then, find the model by navigating to Processing Toolbox | Models, right-click on it, and choose Execute from the context menu. In our example, the model will be found in the Landcover group:

Landcover group

The model dialog will open with the listed inputs. For the data layer input, you can choose data loaded into QGIS by using the drop-down arrow or you can use the browse button () to locate the data on disk. For this example, we are using the AKrivers.shp and the trees.shp sample data. The Buffer distance field is set to 100 since this was the default value set for the number input. For the output, you can choose to have the layer as a temporary one, or choose a location and filename for it. Here, the data is...

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