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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)
Buy this Book
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Mastering OpenLayers 3

Mastering OpenLayers 3

4.7 (3)
By: Farkas
Buy this Book

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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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. Creating Simple Maps with OpenLayers 3
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1. Creating Simple Maps with OpenLayers 3
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Before getting started
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Structure of OpenLayers 3
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Building the layout
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Using the API documentation
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Debugging the code
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Summary
2
2. Applying Custom Styles
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2. Applying Custom Styles
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Before getting started
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Customizing the default appearance
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Styling vector layers
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Customizing the appearance with JavaScript
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Creating a WebGIS client layout
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Summary
3
3. Working with Layers
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3. Working with Layers
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Before getting started
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Building a layer tree
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Adding layers dynamically
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Adding vector layers with the File API
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Adding vector layers with a library
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Removing layers dynamically
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Changing layer attributes
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Changing the layer order with the Drag and Drop API
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Clearing the message bar
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Summary
4
4. Using Vector Data
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4. Using Vector Data
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Before getting started
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Accessing attributes
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Setting attributes
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Validating attributes
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Creating thematic layers
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Saving vector data
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Saving with WFS-T
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Modifying the geometry
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Summary
5
5. Creating Responsive Applications with Interactions and Controls
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5. Creating Responsive Applications with Interactions and Controls
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Before getting started
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Building the toolbar
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Mapping interactions to controls
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Building a set of feature selection controls
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Adding new vector layers
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Building a set of drawing tools
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Modifying and snapping to features
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Creating new interactions
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Building a measuring control
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Summary
6
6. Controlling the Map – View and Projection
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6. Controlling the Map – View and Projection
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Before getting started
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Customizing a view
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Constraining a view
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Creating a navigation history
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Working with extents
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Rotating a view
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Changing the map's projection
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Creating custom animations
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Summary
7
7. Mastering Renderers
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7. Mastering Renderers
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Before getting started
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Using different renderers
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Creating a WebGL map
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Drawing lines and polygons with WebGL
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Blending layers
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Clipping layers
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Exporting a map
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Creating a raster calculator
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Creating a convolution matrix
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Clipping a layer with WebGL
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Summary
8
8. OpenLayers 3 for Mobile
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8. OpenLayers 3 for Mobile
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Before getting started
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Responsive styling with CSS
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Generating geocaches
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Adding device-dependent controls
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Vectorizing the mobile version
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Making the mobile application interactive
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Summary
9
9. Tools of the Trade – Integrating Third-Party Applications
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9. Tools of the Trade – Integrating Third-Party Applications
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Before getting started
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Exporting a QGIS project
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Importing shapefiles
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Spatial analysis with Turf
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Spatial analysis with JSTS
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3D rendering with Cesium
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Summary
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10. Compiling Custom Builds with Closure
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10. Compiling Custom Builds with Closure
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Before getting started
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Configuring Node JS
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Compiling OpenLayers 3
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Bundling an application with OpenLayers 3
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Extending OpenLayers 3
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Creating rich documentation with JSDoc
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Summary
11
Index
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Index

Spatial analysis with JSTS

Now that we are kind of familiar with Turf, let's take a look at another topological library: JSTS. In this example, called ch09_jsts, we will reproduce the first two spatial operations from the previous example with JSTS. As we would like to make the least replicated code, we will use ch09_turf as the basis for this example.

JSTS Topology Suite (JSTS) is another reasonably mature topology library out there. It is the JavaScript port of the famous desktop topology application, Java Topology Suite (JTS). The most important difference between Turf and JSTS is that JSTS is more robust but less capable of implementation. It uses an internal format to handle geometries and offers some I/O capabilities. It can traditionally read from Well-Known Text (WKT), but now it can also read from GeoJSON, OpenLayers 2, and OpenLayers 3's internal geometry formats. It can also write to these formats. As JSTS can directly read and write OpenLayers 3's geometries, the overhead of converting...

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