Hands-On Geospatial Analysis with R and QGIS

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Title Page

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Contributors

About the author

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Preface

Who this book is for

What this book covers

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Conventions used

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Setting Up R and QGIS Environments for Geospatial Tasks

Installing R

Basic data types and data structures in R

Basic data types in R

Variable

Data structures in R

Vectors

Basic operations with vector

Matrix

Array

Data frames

Lists

Factor

Looping functions and apply family in R

Looping in R

Functions in R

Apply family – lapply sapply apply tapply

apply

lapply

sapply

tapply

Plotting in R

Installing QGIS

Getting to know the QGIS environment

Summary

Questions

Further reading

Fundamentals of GIS Using R and QGIS

GIS in R

Data types in GIS

Vector data

Raster data

Plotting point data

Importing point data from Excel

Plotting lines and polygons data in R

Adding point data on polygon data

Changing projection system

Plotting quantitative and qualitative data on a map

Using tmap for easier plotting

Vector data in QGIS

Adding Excel data in QGIS using joins

Adding CSV layers in QGIS

Showing multiple labels using text chart diagrams

Adding a background map

Summary

Questions

Further reading

Creating Geospatial Data

Getting data from the web

Downloading data from Natural Earth

Downloading data from DIVA-GIS

Downloading data from EarthExplorer

Creating vector data

Creating point data

Creating polygon data

Adding features to vector data

Digitizing a map

Working with databases

Creating a SpatiaLite database

Adding a shapefile to a database

Summary

Questions

Further reading

Working with Geospatial Data

Working with vector data in R

Combining shapefiles in R

Clipping in R

Difference in R

Area calculation in R

Working with vector data in QGIS

Combining shapefiles

Converting vector data types

Polygons into lines

Lines into polygons

Clipping

Difference

Buffer

Intersection

Statistical summary of vector layers

Using field calculators for advanced field calculations

Summary

Remote Sensing Using R and QGIS