Getting Started with GEO, CouchDB, and Node.js

✍ Scribed by Thompson, Mick

• Publisher: O'Reilly Media, Inc.
• Year: 2011
• Tongue: English
• Leaves: 48
• Category: Library

✦ Synopsis

Today's mobile devices have GPS and standard APIs to give you access to coordinates--but what can you do with that data? With this concise book, application developers learn how to work with location data quickly and easily, using Node.js, CouchDB, and other open source tools and libraries. Node.js makes it simple to run event code on the Web, and the CouchDB document-oriented database lets you store location data and perform complex queries on it quickly. You'll learn how to get started with these tools, and then use them together to build an example project called MapChat, using HTML and JavaS.  Read more...

Abstract:

Today's mobile devices have GPS and standard APIs to give you access to coordinates - but what can you do with that data? With this concise book, application developers learn how to work with location data quickly and easily, using Node.js, CouchDB, and other open source tools and libraries.  Read more...

✦ Table of Contents

Content: Table of Contents
Preface
Conventions Used in This Book
Using Code Examples
Safari® Books Online
How to Contact Us
Chapter 1. Node.js
Getting Started with Node.js
Asynchronous Callbacks
Using Node.js on the Web
ExpressJS
Routes
Templates
Static Files
Chapter 2. Geographic Data
Geo Datasets
GeoJSON
Example Geometries
GDAL
Installing
Grab Some Data
Ogrinfo
Ogr2ogr
Geohash
Chapter 3. CouchDB
How Does CouchDB Work?
Replication
Indexes and Views
Getting Started with CouchDB
Creating a Database
Creating a View
View Options
Using Reduce. Using CouchApps ... For Fun and ProfitLoad Shared Code
GeoCouch
Importing Data
Using Cradle to Talk to Geocouch
Add the Couchapp
Bounding Box Queries
Displaying the Data Using Node.js
CouchDB Hosting Options
Chapter 4. MapChat --
Example Project
Realtime Chat
Socket.io
Setting Up the Project
Making chat subscriptions
Handling Chat Messages
Using Google Maps
Getting User Location
Grab browser location
Center and Bounds
Custom Overlays
Chat Messages from CouchDB
Clustering
Using a List Function
Notify Clients of Cluster Updates
Display List of Clusters in the Client.

✦ Subjects

Node.js;Application software;Development;Mobile geographic information systems;Location-based services;Mobile computing;Programming;Open source software;COMPUTERS;Programming;General