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Python Geospatial Development Essentials

Python Geospatial Development Essentials

By : Karim Bahgat
4.5 (2)
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Python Geospatial Development Essentials

Python Geospatial Development Essentials

4.5 (2)
By: Karim Bahgat
Buy this Book

Overview of this book

This book is ideal for Python programmers who are tasked with or wish to make a special-purpose GIS application. Analysts, political scientists, geographers, and GIS specialists seeking a creative platform to experiment with cutting-edge spatial analysis, but who are still only beginners in Python, will also find this book beneficial. Familiarity with Tkinter application development in Python is preferable but not mandatory.
Table of Contents (10 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Preparing to Build Your Own GIS Application
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1. Preparing to Build Your Own GIS Application
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Why reinvent the wheel?
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Setting up your computer
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Installing third-party packages
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Imagining the roadmap ahead
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Summary
2
2. Accessing Geodata
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2. Accessing Geodata
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The approach
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Vector data
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Raster data
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Summary
3
3. Designing the Visual Look of Our Application
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3. Designing the Visual Look of Our Application
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Setting up the GUI package
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Creating the toolkit building blocks
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Using the toolkit to build the GUI
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Testing our application
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Summary
4
4. Rendering Our Geodata
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4. Rendering Our Geodata
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Rendering
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Interactively rendering our maps
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Putting it all together
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Summary
5
5. Managing and Organizing Geographic Data
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5. Managing and Organizing Geographic Data
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Creating the management module
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Inspecting files
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Organizing files
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Weaving functionality into the user interface
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Summary
6
6. Analyzing Geographic Data
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6. Analyzing Geographic Data
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Creating the analysis module
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Analyzing data
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Weaving functionality into the user interface
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Summary
7
7. Packaging and Distributing Your Application
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7. Packaging and Distributing Your Application
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Attaching an application logo
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The application start up script
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Packaging your application
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Creating an installer
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Summary
8
8. Looking Forward
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8. Looking Forward
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Improvements to the user interface
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Other variations of the user interface
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Adding more GIS functionality
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Expanding to other platforms
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Summary
9
Index
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Index

Weaving functionality into the user interface

Next, let's make the analysis functionality created so far accessible in the user interface of our application.

Layer-specific right-click functions

In Chapter 5, Managing and Organizing Geographic Data, we instructed our application that right-clicking a layer in the LayersPane give us a menu of actions to choose from that is specific to that particular layer. In the current chapter, the only layer-specific functionality we made is the buffer operation. Therefore, we add the buffer menu option to the RightClickMenu_VectorLayer class in app/dialogues.py. Remember to find and save an app/icons/buffer.png icon so that it can be displayed next to the menu's buffer item:

        # Buffering
        def open_options_window():
            window = VectorBufferOptionWindow(self.layeritem, self.layerspane, self.layeritem, statusbar)
        self.imgs["buffer"] = icons.get("buffer.png", width=32, height=32)
        self.add_command(label="Buffer", command...
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Tech Concepts
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Programming languages
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Python Geospatial Development Essentials
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