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Building Mapping Applications with QGIS

You're reading from   Building Mapping Applications with QGIS Create your own sophisticated applications to analyze and display geospatial information using QGIS and Python

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Product type Paperback
Published in Dec 2014
Publisher Packt
ISBN-13 9781783984664
Length 264 pages
Edition 1st Edition
Tools
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Author (1):
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Erik Westra Erik Westra
Author Profile Icon Erik Westra
Erik Westra
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Toc

Table of Contents (11) Chapters Close

Preface 1. Getting Started with QGIS FREE CHAPTER 2. The QGIS Python Console 3. Learning the QGIS Python API 4. Creating QGIS Plugins 5. Using QGIS in an External Application 6. Mastering the QGIS Python API 7. Selecting and Editing Features in a PyQGIS Application 8. Building a Complete Mapping Application using Python and QGIS 9. Completing the ForestTrails Application Index

Using the console

While you briefly used the QGIS Console in the previous chapter, it is worth examining the QGIS Console window in more detail, so that you are aware of the various features that are available.

If you don't already have it open, choose the Python Console item from the Plugins menu to open the console. The following screenshot shows the various parts of the console window:

Using the console

Let's take a closer look at these various parts:

  • The Clear console button wipes out the contents of the interpreter log
  • The Import Class pop up contains shortcuts to import some commonly-used PyQGIS classes
    Using the console

    These are equivalent to typing import Processing, from PyQt4.QtCore import *, and from PyQt4.QtGui import *.

  • The Run command button simply executes the command you have typed in the Python shell field

    Note

    Of course, you can also run the entered command by pressing the Return key, so this command is only useful if you really want to run a command using the mouse.

  • The Show editor button shows or hides...
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