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QGIS 2 Cookbook.

Author: Alex Mandel
Publisher: Packt Publishing, 2016.
Edition/Format:   eBook : Document : English : 1View all editions and formats
Summary:
Become a QGIS power user and master QGIS data management, visualization, and spatial analysis techniquesAbout This Book Explore and create time-based visualizations and build interactive maps Maximize your use of the QGIS features, plugins and toolbox automation Packed with lots of sample datasets to enable a better understanding of the codeWho This Book Is ForIf you are an intermediate GIS user, with either  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Erscheint auch als:
Mandel, Alex
QGIS 2 cookbook
Birmingham : Packt Publishing, 2016
xi, 368 Seiten
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Alex Mandel
ISBN: 178398497X 9781783984978 9781783984961 1783984961
OCLC Number: 948780309
Description: 1 online resource
Contents: Cover ; Copyright; Credits; About the Authors; About the Reviewers; www.PacktPub.com; Table of Contents; Preface; Chapter 1: Data Input and Output; Introduction; Finding geospatial data on your computer; Describing data sources; Importing data from text files; Importing KML/KMZ files; Importing DXF/DWG files; Opening a NetCDF file; Saving a vector layer; Saving a raster layer; Reprojecting a layer; Batch format conversion; Batch reprojection; Loading vector layers into SpatiaLite; Loading vector layers into PostGIS; Chapter 2: Data Management; Introduction; Joining layer data Cleaning up the attribute tableConfiguring relations; Joining tables in databases; Creating views in SpatiaLite; Creating views in PostGIS; Creating spatial indexes; Georeferencing rasters; Georeferencing vector layers; Creating raster overviews (pyramids); Building virtual rasters (catalogs); Chapter 3: Common Data Preprocessing; Introduction; Converting points to lines to polygons and back --
QGIS; Converting points to lines to polygons and back --
SpatiaLite; Converting points to lines to polygons and back --
PostGIS; Cropping rasters; Clipping vectors; Extracting vectors Converting rasters to vectorsConverting vectors to rasters; Building DateTime strings; Geotagging photos; Chapter 4: Data Exploration; Introduction; Listing unique values in a column; Exploring numeric value distribution in a column; Exploring spatiotemporal vector data using Time Manager; Creating animations using Time Manager; Designing time-dependent styles; Loading BaseMaps with the QuickMapServices plugin; Loading BaseMaps with the OpenLayers plugin; Viewing geotagged photos; Chapter 5: Classic Vector Analysis; Introduction; Selecting optimum sites; Dasymetric mapping Calculating regional statisticsEstimating density heatmaps; Estimating values based on samples; Chapter 6: Network Analysis; Introduction; Creating a simple routing network; Calculating the shortest paths using the Road graph plugin; Routing with one-way streets in the Road graph plugin; Calculating the shortest paths with the QGIS network analysis library; Routing point sequences; Automating multiple route computation using batch processing; Matching points to the nearest line; Creating a routing network for pgRouting; Visualizing the pgRouting results in QGIS Using the pgRoutingLayer plugin for convenienceGetting network data from the OSM; Chapter 7: Classic Raster Analysis; Introduction; Using the raster calculator; Preparing elevation data; Calculating a slope; Calculating a hillshade layer; Analyzing hydrology; Calculating a topographic index; Automating analysis tasks using the graphical modeler; Chapter 8: Raster Analysis II; Introduction; Calculating NDVI; Handling null values; Setting extents with masks; Sampling a raster layer; Visualizing multispectral layers; Modifying and reclassifying values in raster layers

Abstract:

Become a QGIS power user and master QGIS data management, visualization, and spatial analysis techniquesAbout This Book Explore and create time-based visualizations and build interactive maps Maximize your use of the QGIS features, plugins and toolbox automation Packed with lots of sample datasets to enable a better understanding of the codeWho This Book Is ForIf you are an intermediate GIS user, with either previous experience in QGIS or any other GIS application, this is the book for you. The recipes can be used to learn more advanced techniques in QGIS or to replicate the functionalities equivalent to other GIS platforms. This book assumes that you already have a working QGIS system in place. What You Will Learn Import and export common tricky spatial data formats Perform classic vector and raster analysis with QGIS Utilize spatial databases and data management tools Use and create geographic web services and maps Explore and create time-based visualizations Perform network building and routing analysis Extend QGIS capabilities with popular plugins and toolbox automation Make beautiful and unique maps with customized cartographyIn DetailQGIS is a user-friendly, cross-platform desktop geographic information system used to make maps and analyze spatial data. QGIS allows users to understand, question, interpret, and visualize spatial data in many ways that reveal relationships, patterns, and trends in the form of maps. This book is a collection of simple to advanced techniques that are needed in everyday geospatial work, and shows how to accomplish them with QGIS. You will begin by understanding the different types of data management techniques, as well as how data exploration works. You will then learn how to perform classic vector and raster analysis with QGIS, apart from creating time-based visualizations. Finally, you will learn how to create interactive and visually appealing maps with custom cartography. By the end of this book, you will have all the necessary knowledge to handle spatial data management, exploration, and visualization tasks in QGIS. Style and approachThis book covers practical examples, with step-by-step instructions on how to use real world data covering common GIS operations and the different analysis techniques. It provides detailed explanations and applications of QGIS concepts that will allow the user to effectively analyze spatial data.

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