You're reading from QGIS Python Programming Cookbook, Second Edition Automating geospatial development

Product type Paperback

Published in Mar 2017

Publisher Packt

ISBN-13 9781787124837

Length 464 pages

Edition 2nd Edition

Languages

Python

Tools

Eclipse

Concepts

Geospatial Analysis

Author (1):

Joel Lawhead

View More author details

Table of Contents (10) Chapters

Preface

1. Automating QGIS FREE CHAPTER

2. Querying Vector Data

3. Editing Vector Data

4. Using Raster Data

5. Creating Dynamic Maps

6. Composing Static Maps

7. Interacting with the User

8. QGIS Workflows

9. Other Tips and Tricks

Creating a simple text input dialog

In this recipe, we'll demonstrate one of the simplest methods used for accepting input from a user: a text input dialog.

Getting ready

Open the QGIS Python console by selecting the Plugins menu and then clicking on Python Console.

How to do it...

In this recipe, we will initialize the dialog and then configure its title and label. We'll set the editing mode and the default text. When you click on the OK button, the text will be printed to the Python Console. To do this, we need to perform the following steps:

First, we need to import the GUI library:
```
        from PyQt4.QtGui import * 
```
Next, we initialize the dialog:
```
        qid = QInputDialog() 
```

Now, we set the window's title, label text, editing mode, and default text:

        title = "Enter Your Name" 
        label = "Name: " 
        mode = QLineEdit.Normal 
        default = "<your name here>"

We configure the dialog while capturing the user input and the...

The rest of the chapter is locked

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Authors (1)

Joel Lawhead

Joel Lawhead is a PMI-certified Project Management Professional (PMP), a certified GIS Professional (GISP), and vice president of NVision Solutions, Inc., an award-winning firm specializing in geospatial technology integration and sensor engineering for NASA, FEMA, NOAA, the US Navy, and many other commercial and non-profit organizations. Joel began using Python in 1997 and started combining it with geospatial software development in 2000. He has authored multiple editions of Learning Geospatial Analysis with Python and QGIS Python Programming Cookbook, both from Packt. He is also the developer of the open source Python Shapefile Library (PyShp) and maintains a geospatial technical blog.

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