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Practical GIS

You're reading from   Practical GIS Learn novice to advanced topics such as QGIS, Spatial data analysis, and more

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Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781787123328
Length 428 pages
Edition 1st Edition
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Author (1):
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G√°bor Farkas G√°bor Farkas
Author Profile Icon G√°bor Farkas
G√°bor Farkas
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Table of Contents (15) Chapters Close

Preface 1. Setting Up Your Environment FREE CHAPTER 2. Accessing GIS Data With QGIS 3. Using Vector Data Effectively 4. Creating Digital Maps 5. Exporting Your Data 6. Feeding a PostGIS Database 7. A PostGIS Overview 8. Spatial Analysis in QGIS 9. Spatial Analysis on Steroids - Using PostGIS 10. A Typical GIS Problem 11. Showcasing Your Data 12. Styling Your Data in GeoServer 13. Creating a Web Map Appendix

Accessing raster data

The first data type that we will use is raster data. It might be the most familiar to you, as it resembles traditional images. First of all, let's open QGIS. In the browser panel, we can immediately see our downloaded data if we navigate to our working directory. We can easily distinguish vector data from raster data by their icons. Raster layers have a dedicated icon of a 3x3 pixels image, while vector layers have an icon of a concave polygon:

Don't have a browser panel? You can toggle panels from the View menu's Panels option. If it is displayed, you can dock it anywhere by dragging it out from its current place and placing it in another part of the GUI.

We can drag and drop most of the data from the browser panel or, alternatively, use the Add Raster Layer button from the Add layer toolbar and browse the layer. The browser panel is more...

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