Book Image

Google Maps JavaScript API Cookbook

Book Image

Google Maps JavaScript API Cookbook

Overview of this book

Day by day, the use of location data is becoming more and more popular, and Google is one of the main game changers in this area. The Google Maps JavaScript API is one of the most functional and robust mapping APIs used among Geo developers. With Google Maps, you can build location-based apps, maps for mobile apps, visualize geospatial data, and customize your own maps.Google Maps JavaScript API Cookbook is a practical, hands-on guide that provides you with a number of clear, step-by-step recipes that will help you to unleash the capabilities of the Google Maps JavaScript API in conjunction with open source or commercial GIS servers and services through a number of practical examples of real world scenarios. This book begins by covering the essentials of including simple maps for Web and mobile, adding vector and raster layers, styling your own base maps, creating your own controls and responding to events, and including your own events.You will learn how to integrate open source or commercial GIS servers and services including ArcGIS Server, GeoServer, CartoDB, Fusion Tables, and Google Maps Engine with the Google Maps JavaScript API. You will also extend the Google Maps JavaScript API to push its capabilities to the limit with additional libraries and services including geometry, AdSense, geocoding, directions, and StreetView.This book covers everything you need to know about creating a web map or GIS applications using the Google Maps JavaScript API on multiple platforms.
Table of Contents (15 chapters)
Google Maps JavaScript API Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Adding polygons to maps


Polygons are similar to polylines that are an array of points connected to each other. However, polygons are closed loops to show Earth features such as parks, parcels, or regions. In addition to the properties of polylines, polygons have a fill region inside.

This recipe is focused on showing polygons on a map to show a region around Ankara.

Getting ready

This recipe uses the same map-creation process defined in Chapter 1, Google Maps JavaScript API Basics, but there are some minor changes in the zoom level and center coordinates to show the region in detail.

You can find the source code at Chapter 3/ch03_adding_polygons.html.

How to do it…

If you perform the following steps, you can add polygon-type geometries to your map:

  1. Let's open our first recipe's source code mentioned in Chapter 1, Google Maps JavaScript API Basics, and save it as adding_polygons.html.

  2. Then, add the following lines of code after defining the map object at the beginning of the JavaScript part. The...