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  • Book Overview & Buying Mastering OpenLayers 3
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Mastering OpenLayers 3

Mastering OpenLayers 3

By : Farkas
4.7 (3)
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Mastering OpenLayers 3

Mastering OpenLayers 3

4.7 (3)
By: Farkas

Overview of this book

OpenLayers 3 allows you to create stunning web mapping and WebGIS applications. It uses modern, cutting edge browser technologies. It is written with Closure Library, enabling you to build browser-independent applications without painful debugging ceremonies, which even have some limited fallback options for older browsers. With this guide, you will be introduced to the world of advanced web mapping and WebGIS. First, you will be introduced to the advanced features and functionalities available in OpenLayers 3. Next, you will be taken through the key points of creating custom applications with OpenLayers 3. You will then learn how to create the web mapping application of yours (or your company's) dream with this open source, expense-free, yet very powerful library. We’ll also show you how to make amazing looking thematic maps and create great effects with canvas manipulation. By the end of this book, you will have a strong command of web mapping and will be well on your way to creating amazing applications using OpenLayers 3.
Table of Contents (12 chapters)
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11
Index

Chapter 4. Using Vector Data

When we work with vector sources, we basically have to deal with two types of data: geometry and attributes. The geometry part is responsible for storing the position of our shapes in one of the projections. We make spatial (topological) analysis with the geometries of our data.

Attribute data is responsible for storing the related information for every feature. It is also used for various analysis. Furthermore, it is utterly important when it comes to querying or styling. These are considered as basic or core capabilities in GIS software, although modern web mapping libraries tend to lack in effective attribute management. This is the reason why we will mainly focus on attribute data.

In this chapter, we will cover the following topics:

  • Object-oriented attribute management
  • Relational considerations
  • Creating thematic layers dynamically
  • Saving spatial data to our server
  • Modifying geometries in place
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