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QGIS By Example

You're reading from   QGIS By Example Leverage the power of QGIS in real-world applications to become a powerful user in cartography and GIS analysis

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Product type Paperback
Published in Jun 2015
Publisher
ISBN-13 9781782174677
Length 316 pages
Edition 1st Edition
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Toc

Table of Contents (12) Chapters Close

Preface 1. Handling Your Data FREE CHAPTER 2. Visualizing and Styling the Data 3. Presenting Data on a Print Map 4. Publishing the Map Online 5. Answering Questions with Density Analysis 6. Answering Questions with Visibility Analysis 7. Answering Questions with Suitability Analysis 8. Automating Analysis with Processing Models 9. Automating Analysis with Processing Scripts 10. Developing a Python Plugin – Select by Radius Index

Step 2 – analyze the available data and define its relevance


As soon as we have defined the basic requirements, we need to explore the data layers that are potentially useful and relevant for our analysis. The training dataset contains a large number of datasets, and the most relevant among them are listed in the following table:

Requirement

Layer

Potential relevance

Safety

hurricane_evacuation_zones

Hurricane evacuation zones are the areas of the city that may need to be evacuated due to life- and safety-related threats from a hurricane storm surge.

hurricane_inundation_zones

Hurricane inundation zones are the areas of worst-case storm surge inundation.

noise_heatmap

The raster created in the Creating heat maps with the Heatmap plugin section of Chapter 5, Answering Questions with Density Analysis, that shows the spatial density of registered noise complaints might be useful for potential assessment for public safety.

Connectivity

subway_entrances

Locations of subway entrances...

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