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OpenLayers 2.10 Beginner's Guide

OpenLayers 2.10 Beginner's Guide

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OpenLayers 2.10 Beginner's Guide

OpenLayers 2.10 Beginner's Guide

4.2 (9)
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Overview of this book

Table of Contents (18 chapters)
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OpenLayers 2.10
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OpenLayers 2.10
Credits
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Credits
About the Author
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About the Author
About the Reviewers
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About the Reviewers
www.PacktPub.com
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www.PacktPub.com
Preface
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Preface
Free Chapter
1
Getting Started with OpenLayers
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Getting Started with OpenLayers
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What is OpenLayers?
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What, technically, is OpenLayers?
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Anatomy of a web-mapping application
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Relation to Google / Yahoo! / and other mapping APIs
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The OpenLayers website
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Time for action – downloading OpenLayers
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Time for action – creating your first map
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How the code works
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Behind the scenes—Object Oriented Programming (OOP)
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Time for Action – play MadLibs
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Now what?
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Where to go for help
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OpenLayers source code repository
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Summary
2
Squashing Bugs With Firebug
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Squashing Bugs With Firebug
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What is Firebug?
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Setting up Firebug
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Time for Action – downloading Firebug
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Firebug controls
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Panel conclusion
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Using the Console panel
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Time for Action – executing code in the Console
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Time for Action – creating object literals
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Time for Action – interacting with a map
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Summary
3
The 'Layers' in OpenLayers
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The 'Layers' in OpenLayers
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What's a layer?
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Layers in OpenLayers
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Time for Action – creating a map with multiple layers
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Creating layer objects
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Time for Action – configuring the options parameter
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Configuring layer options
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Map tiles
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Available layer properties
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The OpenLayers.Layer class
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Other layer types
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Time for Action – creating a Google Maps layer
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Time for Action – using the image layer
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Accessing layer objects
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Time for Action – accessing map.layers
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Time for Action – accessing layer objects in Firebug
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Layer class methods
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Time for Action – defining a global layer object variable
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Summary
4
Wrapping Our Heads Around Projections
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Wrapping Our Heads Around Projections
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Map projections
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Time for Action – using different projection codes
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Time for Action – determining LonLat coordinates
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OpenLayers projection class
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Transforming projections
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Time for Action – coordinate transforms
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Time for Action – setting up Proj4js.org
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Summary
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Interacting with Third Party APIs
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Interacting with Third Party APIs
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Third party mapping APIs
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Google Maps
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Time for Action – using Goole Maps V3 (standard way)
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Time for Action – creating a Google Map layer with V2 (Deprecated)
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Yahoo! Maps API
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Time for Action – using the Yahoo! Maps Layer
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Microsoft's mapping API
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Time for Action – creating a Bing/Virtual Earth Layer
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OpenStreetMap
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Time for Action – creating an OpenStreetMap Layer
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Spherical Mercator
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Time for Action – using Spherical Mercator
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Using Google Maps and other layers
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Time For Action – creating your first mashup
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Summary
6
Taking Control of Controls
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Taking Control of Controls
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What are controls?
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Adding controls to your map
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Time for Action – creating a map with no controls
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Time for Action – adding controls to a map
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OpenLayers.Control class
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OpenLayers.Control subclasses
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Time for Action – using attributions
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Time for Action – using the NavigationHistory control
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Panels
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Time for Action – using Panels
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Creating our own controls
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Creating a custom button
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Time for Action – creating a simple button
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Events
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Time for Action – creating a custom TYPE_TOGGLE control
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Summary
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Styling Controls
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Styling Controls
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What is CSS?
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Time for Action – using external CSS files
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OpenLayers and CSS
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Time for Action – styling controls
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Time for Action – styling the LayerSwitcher control
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Other resources
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Summary
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Charting the Map Class
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Charting the Map Class
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The Map class
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Map class properties
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Time for Action – using the allOverlays Map property
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Time for Action – setting zoom levels and maxExtent
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Time for Action – using resolutions array
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Time for Action – using Min and Max resolution
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Time for Action – Using scales
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Time for Action – working with Pan animations
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Map functions
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Time for Action – using control methods
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Time for Action – using coordinate related functions
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Doing stuff with events
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Time for Action – using eventListeners
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Time for Action – working with Map events
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Multiple maps
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Time for Action – using multiple map objects
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Time for Action – creating a multiple map and custom event application
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Summary
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Using Vector Layers
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Using Vector Layers
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What is the Vector Layer?
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Time for Action – creating a Vector Layer
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How the Vector Layer works
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Time for Action – changing the Renderers array
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Vector Layer class
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Time for Action – adding features
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Time for Action – destroying features
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Time For Action – working with feature events
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Vector Layer class events
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Time For Action – using Vector Layer events
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Time For Actions – working with more events
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Geometry and Feature classes
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Time for Action – using Geometry class methods
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Time For Action – using the SelectFeature control
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The Vector class, part two
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Time for Action – creating a Vector Layer
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Using the Vector Layer without a Protocol class
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Time for Action – using the Format and Strategy classes alone
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Format class
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Strategy class
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Summary
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Vector Layer Style Guide
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Vector Layer Style Guide
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Styling the Vector Layer
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Time For Action – applying some basic Styling
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The StyleMap class
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The Style class
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Time for Action – common style examples
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Attribute replacement
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Time For Action – working with attribute replacement
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Rules and filters
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Time For Action – using addUniqueValueRules
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Rules and filters
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Time for Action – using rules and filters
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OpenLayers.Rule class
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OpenLayers.Filter class
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Time For Action – figuring out logical filters
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Summary
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Making Web Map Apps
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Making Web Map Apps
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Development strategies
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Creating a web map application using Flickr
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Time For Action – getting Flickr data
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Time for Action – adding data to your map
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Time for Action – extract style
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Turning our example into an application
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Time for Action – adding some interactivity
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Using real time data with a ProxyHost
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Time for Action – getting dynamic data
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Wrapping up the application
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Time For Action – adding dynamic tags to your map
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Deploying an application
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Building the OpenLayers Library file
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Time for Action – building a Config file
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Time for Action – running the Build script
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Summary
Index
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Index

OpenLayers.Control class

As we saw in the previous example, there are quite a few controls available to us. The Control class is similar in nature to the Layer class—there is a base Control class which all other control subclasses inherit from. Because most controls provide completely different functionality from one another, the base Control class does not contain a lot of properties.

The official, up to date documentation for this class can be found at http://dev.openlayers.org/docs/files/OpenLayers/Control-js.html.

OpenLayers.Control properties

Like properties of other classes, you can specify these properties when instantiating your control object. There are a few properties of the base OpenLayers.Control class, which are inherited by all other Control classes:

Name

Type

Description

autoActivate

{Boolean}

Set the control to activate when added to the map. Default value is false.

div

{HTML Element}

Many controls support the ability to be placed in a div outside the map. (This...

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