Large data layers with hundreds or thousands of features will render much more quickly with a spatial index. To create a spatial index, choose the Create Spatial Index tool by navigating to Vector | Data Management Tools. Select the loaded canvas layers or check the Select files from disk option and navigate to a folder and select layers on disk. Click on OK to create the spatial indexes.
Mastering QGIS
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
Free Chapter
A Refreshing Look at QGIS
Creating Spatial Databases
Styling Raster and Vector Data
Preparing Vector Data for Processing
Preparing Raster Data for Processing
Advanced Data Creation and Editing
The Processing Toolbox
Automating Workflows with the Graphical Modeler
Creating QGIS Plugins with PyQGIS and Problem Solving
PyQGIS Scripting
Index
Customer Reviews