Book Image

GeoServer Beginner's Guide - Second Edition

By : Stefano Iacovella
Book Image

GeoServer Beginner's Guide - Second Edition

By: Stefano Iacovella

Overview of this book

GeoServer is an opensource server written in Java that allows users to share, process, and edit geospatial data. This book will guide you through the new features and improvements of GeoServer and will help you get started with it. GeoServer Beginner's Guide gives you the impetus to build custom maps using your data without the need for costly commercial software licenses and restrictions. Even if you do not have prior GIS knowledge, you will be able to make interactive maps after reading this book. You will install GeoServer, access your data from a database, and apply style points, lines, polygons, and labels to impress site visitors with real-time maps. Then you follow a step-by-step guide that installs GeoServer in minutes. You will explore the web-based administrative interface to connect to backend data stores such as PostGIS, and Oracle. Going ahead, you can display your data on web-based interactive maps, use style lines, points, polygons, and embed images to visualize this data for your web visitors. You will walk away from this book with a working application ready for production. After reading GeoServer Beginner's Guide, you will be able to build beautiful custom maps on your website using your geospatial data.

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Table of Contents (20 chapters)
Title Page
Title Page
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Customer Feedback
Customer Feedback
Preface
Preface
Free Chapter
1
GIS Fundamentals
GIS Fundamentals
What is GIS about?
The foundation of any GIS - spatial data
Measuring the world
Understanding coordinate systems
Representing geometrical shapes
Modelling the real world with raster data
Representing the world
Adding more colors to your maps
Summary
2
Getting Started with GeoServer
Getting Started with GeoServer
Installing required components
Configuring Tomcat as a service on Linux Mint
Installing GeoServer
Deploying GeoServer on Tomcat
Implementing basic security
Improving security settings
Understanding the GeoServer release cycle
Upgrading your installation
Summary
3
Exploring the Administrative Interface
Exploring the Administrative Interface
Understanding the interface
The About & Status section
The Data section
The Services section
Settings
Tile Caching
The Security panel
Demos
Summary
4
Adding Your Data
Adding Your Data
Configuring your data
Configuring vector data sources
Configuring raster data sources
Adding a raster
Exploring additional data sources
Summary
5
Accessing Layers
Accessing Layers
Web services
WMS formats
Working with tiles
Exploring further Web Map Service output formats
Web Feature service
Extra output options
The TEXT/HTML format
ImageMap
Using the WMS Reflector
Summary
6
Styling Your Layers
Styling Your Layers
Understanding Styled Layer Descriptor (SLD)
Editing styles
Exploring the standard structure of a style
Loading data for styling
Working with point symbols
LineString symbols
Working with polygon symbols
Adding labels
Thematic mapping
Setting visibility
Putting it all together
Styling with CSS
Summary
7
Creating Simple Maps
Creating Simple Maps
Exploring the Google Maps API
Using OpenLayers
Exploring Leaflet
Summary
8
Performance and Caching
Performance and Caching
Exploring GeoWebCache
Configuring GeoWebCache
Configuring Disk Quota
Setting Caching Defaults
Default layers options
Configuring Tile Layers
Using tiles with OpenLayers
Seeding a layer
Using an external GeoWebCache
Summary
9
Automating Tasks - GeoServer REST Interface
Automating Tasks - GeoServer REST Interface
Introducing REST
Using REST
Installing the Requests library
Managing data
Using data stores
Using feature types
Publishing data
Working with Layers
Administer GeoServer with REST
Summary
10
Securing GeoServer Before Production
Securing GeoServer Before Production
Basic Security Settings
Defining users, groups, and roles
Accessing data and services
Securing layers
Summary
11
Tuning GeoServer in a Production Environment
Tuning GeoServer in a Production Environment
Tuning Java
Installing native JAI
Removing unused services
Enabling the Marlin rasterizer
Setting a proxy
Avoiding service faults
Summary
12
Going Further - Getting Help and Troubleshooting
Going Further - Getting Help and Troubleshooting
Going beyond maps
Delivering vector data
Retrieving vector data
Delivering raster data
Retrieving raster data
Advanced configuration - Database connection pooling
Advanced configuration - Monitoring GeoServer
Getting help
Summary
Index
Index

Using OpenLayers

The Google Maps API is not the only option to develop a JavaScript mapping application. OpenLayers is one of the oldest and frequently used frameworks. It is an open source project constantly maintained and developed by a growing crowd of enthusiastic developers. As you have noticed, it is used with the GeoServer previews.

The Layer preview uses OpenLayers 2, but the 4.x release has been out for a while. As long as you are building a new mapping application, you should use this release. Although the following examples are basic, they will show you how to incorporate GeoServer data using the WMS protocol.

Integrating GeoServer and OpenLayers

To discover OpenLayers' capabilities, we will start with a simple map interacting with GeoServer WMS as follows:

  1. Open your text editor and create a new file; we will call it basemapWMS.html. As usual, we will start with the basic elements for an HTML file, plus the reference to the OpenLayers library. Paste the following piece of code inside...
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