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  • Book Overview & Buying Learning D3.js Mapping
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Learning D3.js Mapping

Learning D3.js Mapping

By : Thomas Newton, Oscar Villarreal
4.3 (7)
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Learning D3.js Mapping

Learning D3.js Mapping

4.3 (7)
By: Thomas Newton, Oscar Villarreal
Buy this Book

Overview of this book

If you are interested in creating maps for the web GIS data, this book is for you. Familiarity with D3.js will be helpful but is not necessary.
Table of Contents (9 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. Gather Your Cartographer's Toolbox
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1. Gather Your Cartographer's Toolbox
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Quick bootstrap
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Step-by-step bootstrap
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Optimizing geographic data files with TopoJSON
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Using the web browser as a development tool
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Summary
2
2. Creating Images from Simple Text
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2. Creating Images from Simple Text
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Introduction – general knowledge
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Positioning elements
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Line
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Rectangle
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Circle
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Polygon
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Path
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Transform
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Grouping
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Text
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Summary
3
3. Producing Graphics from Data – the Foundations of D3
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3. Producing Graphics from Data – the Foundations of D3
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Creating basic SVG elements
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Enter
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Update
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Exit
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AJAX
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Summary
4
4. Creating a Map
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4. Creating a Map
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Foundation – creating your basic map
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Experiment 1 – adjusting the bounding box
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Experiment 2 – creating choropleths
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Experiment 3 – adding click events to our visualization
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Experiment 4 – using updates and transitions to enhance our visualization
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Experiment 5 – adding points of interest
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Experiment 6 – adding visualizations as a point of interest
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Summary
5
5. Click-click Boom! Applying Interactivity to Your Map
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5. Click-click Boom! Applying Interactivity to Your Map
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Events and how they occur
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Experiment 1 – hover events
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Experiment 2 – tooltips with visualizations
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Experiment 3 – panning and zooming
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Experiment 4 – orthographic projections
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Experiment 5 – rotating orthographic projections
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Experiment 6 – dragging orthographic projections
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Summary
6
6. Finding and Working with Geographic Data
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6. Finding and Working with Geographic Data
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GeoData file types
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Summary
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7. Testing
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7. Testing
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Code organization and reusable assets
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Project structure
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Writing testable code
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Unit testing
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Creating resilient visualization code
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Summary
8
Index
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Index

GeoData file types

There are dozens of file formats that represent geographic information. In this section, we will focus on three file types: shapefiles, GeoJSON, and TopoJSON.

What are shapefiles and how do I get them?

Shapefiles are the most popular vector-based file format. They contain polygons and lines that represent geographic boundaries. The shapefile format was developed by the company Esri as an open standard to work with Geographic Information Systems (GIS). This vector information can also describe other geographic entities (rivers, lakes, and railroads). In addition, the file format has the ability to store data attributes that are useful when working with visualizations (for example, the name of the geographic object, the type, and some relationships). Most importantly for us, there is a large repository of free shapefiles located at http://diva-gis.org. This repository contains a tremendous wealth of data at different levels of specificity and granularity.

Unfortunately for...

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Learning D3.js Mapping
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