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GeoServer Cookbook

GeoServer Cookbook

By : Iacovella
4.8 (6)
Buy this Book
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GeoServer Cookbook

GeoServer Cookbook

4.8 (6)
By: Iacovella
Buy this Book

Overview of this book

This book is ideal for GIS experts, developers, and system administrators who have had a first glance at GeoServer and who are eager to explore all its features in order to configure professional map servers. Basic knowledge of GIS and GeoServer is required.
Table of Contents (11 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Sections
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Working with Vectors
1. Working with Vectors
Introduction
Using different WFS versions in OpenLayers
Using WFS nonspatial filters
Using WFS spatial filters
Using WFS vendor parameters
Filtering data with CQL
Filtering data with CQL spatial operators
Creating a SQL view
Creating a parametric view
Improving performance with pregeneralized features
2
2. Working with Rasters
2. Working with Rasters
Introduction
Getting coverages in different formats
Using WCS vendor parameters
Publishing a mosaic
Using pyramids
Adding GDAL formats
Adding a PostGIS raster data source
3
3. Advanced Styling
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3. Advanced Styling
Introduction
Installing the CSS module
Creating a simple polygon style with CSS
Adding filters to your style
Adding labels with CSS
Creating scale-dependent rules
Rendering transformations for raster data
Creating a dot density chart
4
4. Geoprocessing
4. Geoprocessing
Introduction
Installing the WPS module
Using the WPS process builder
Chaining process – selecting features contained in a polygon
Chaining process – building your own task
5
5. Advanced Configurations
5. Advanced Configurations
Introduction
Upgrading GeoServer
Creating a script for automatic startup
Optimizing Java
Setting up a JNDI connection pool
Working with CRS
Using the reprojection console
Overriding an official EPSG code
Setting up GeoWebCache – how to make pre-rendered tiles for high availability
Storing configurations in an RDBMS
6
6. Automating GeoServer Configurations
6. Automating GeoServer Configurations
Introduction
Managing workspaces with REST
Creating and editing data stores with REST
Managing layers with REST
Uploading and updating styles with REST
Managing layers with the GWC REST API
Managing cache tiles with the GWC REST API
7
7. Advanced Visualizations
7. Advanced Visualizations
Introduction
Adding time to WMS maps
Using the WMS animator
Keyhole Markup Language styling
Using z-order creatively
Using transparency creatively
Using symbology encoding
8
8. Monitoring and Tuning
8. Monitoring and Tuning
Introduction
Installing the control flow module
Setting a per-user limit
Setting a per-request limit
Installing the monitoring extension
Configuring the monitoring extension
Creating reports from the monitoring database
Limiting the GeoWebCache disk use
9
A. OGC for ESRI Professionals
A. OGC for ESRI Professionals
Introduction
ArcGIS versus GeoServer
Understanding standards
WMS versus the mapping service
WFS versus feature access
Publishing raster data with WCS
10
Index
Index

Adding labels with CSS

As you probably already guessed, CSS can also handle properties for label placement and rendering. Labels are quite useful in maps. They are there to help you understand what places you're looking at, or just to identify the place you were searching for hours! Yes, I know what you're thinking—this must've been before the age of smartphones!

To work with labels, we will use an expression to access the feature attribute values. This results in a dynamic style that changes for each feature!

To practice with labels, you'll use the populated place layers created in Chapter 1, Working with Vectors. The target is to create a map of capitals.

Tip

A full CSS style for the recipe is located in the Capitals.css file.

How to do it…

  1. Open the CSS Style section from the GeoServer web interface. Then, select the link Choose a different layer. From the list of layers, select PostGISLocal:PopulatedPlaces.
  2. Select the link Create a new style. In the form, select...

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