Learning QGIS 2.0 by Anita Graser

By Anita Graser

This booklet takes you thru each degree you must create terrific maps utilizing QGIS 2.0 - from install in your favourite OS to facts enhancing and spatial research during to designing your print maps.

Overview

  • Load and visualize vector and raster data
  • Create and edit spatial info and practice spatial analysis
  • Construct nice maps and print them

In Detail

QGIS is a person pleasant open resource geographic info approach (GIS) that runs on Linux, Unix, Mac OSX, and home windows. the recognition of open resource geographic info platforms and QGIS specifically has been turning out to be speedily during the last few years. an increasing number of businesses and associations are adopting QGIS or even switching to QGIS as their major GIS.

Learning QGIS is a pragmatic, hands-on advisor that offers you with transparent, step by step workouts to help you to use your GIS wisdom to QGIS. Containing a couple of transparent, sensible workouts, this booklet will introduce you to operating with QGIS, fast and painlessly. as a way to benefit from the big variety of functionalities that QGIS bargains, then this can be the e-book for you.

This ebook takes you from fitting and configuring QGIS, via dealing with spatial facts to making nice maps. you are going to the best way to load and visualize current spatial info and the way to create info from scratch. you are going to practice universal geoprocessing and spatial research initiatives and automate them. we are going to conceal tips on how to in achieving nice cartographic output and print maps. you'll examine every thing you must recognize to address spatial info administration, processing, and visualization initiatives in QGIS.

What you are going to examine from this book

  • Installing QGIS
  • Getting pleased with the QGIS consumer interface
  • Loading vector and raster information from documents, databases, and internet services
  • Creating, enhancing, and visualizing spatial data
  • Performing geoprocessing tasks
  • Automating geoprocessing and spatial research tasks
  • Creating complicated cartographic output
  • Designing nice print maps

Approach

A brief booklet with loads of hands-on examples that can assist you examine in a realistic way.

Who this booklet is written for

This booklet is superb for clients, builders, and specialists who understand the elemental services and methods of a GIS yet need to know how you can use QGIS to accomplish the implications they're used to a full-fledged GIS.

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Extra info for Learning QGIS 2.0

Example text

The reader is expected to be comfortable with core GIS concepts. Conventions In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning. " A block of code is set as follows: ( landcover@1 > 0 AND landcover@1 <= 6 ) * 100 + ( landcover@1 >= 7 AND landcover@1 <= 10 ) * 101 + ( landcover@1 >= 11 ) * 102 Any command-line input or output is written as follows: sudo apt-get install qgis python-qgis qgis-plugin-grass New terms and important words are shown in bold.

It selects features based on expressions that can contain references and functions using feature attributes and/or geometry. The list of available functions is pretty long, but we can use the search box to filter the list by name to find the function we are looking for faster. On the right-hand side of the window, we find the Selected Function Help, which explains the functionality and how to use the function in an expression. The Function List also shows the layer attribute fields, and by clicking on Load all unique values or Load 10 sample values, we can easily access their content.

You can load WMS layers by going to Layer | Add WMS Layer, by clicking on the Add WMS Layer button, or by pressing Ctrl + Shift + W. If you know a WMS server, you can connect to it by clicking on New and filling in a name and the URL. All other fields are optional. Don't worry if you don't know of any WMS server, because we can simply click on Add default servers to get access information about servers whose administrators collaborate with the QGIS project. One of these servers is called Lizardtech server.

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