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

Learning D3.js Mapping

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

Learning D3.js Mapping

4.3 (7)
By: 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

Chapter 6. Finding and Working with Geographic Data

We have spent significant time creating and interacting with maps in our previous chapters. In all our examples, the geographic data was included. In this chapter, we will explain how to find geographic data about any country in the world.

There are typically two sets of data that we will need to create a map in D3:

  • A dataset that represents the geographic shape of our map (geo data)
  • Some meaningful data that we want to visualize on the map (for example, population density by US counties or unemployment rate by countries in the world)

This chapter is focused on understanding, manipulating, and optimizing geo data for map visualizations. We will accomplish these goals by:

  • Explaining three important formats that contain geospatial vector data
  • Finding, downloading, and working with large amounts of map data
  • Using techniques to build the right geo data file for your map
CONTINUE READING
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Tech Concepts
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Programming languages
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Learning D3.js Mapping
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