By Michael Young
Have a Google Maps mashup that you’d prefer to reveal to hundreds of thousands of clients on maps.google.com? New to the mapping craze, yet have an concept for a killer map–based program? are looking to easy methods to create GeoRSS and KML feeds along with your geotagged content material, exposing your shopper to new methods of exploring and navigating your content?
Google Maps Mashups with Google Mapplets
- Is the 1st booklet to hide Google’s new Mapplet technology
- Shows you the way to create Google Maps–based purposes and post to maps.google.com
- Provides a single–source source and sensible consultant to Mapplets and mashups
- Teaches you the way to mash up Mapplets utilizing location–specific data
- Includes examples of real–world applications
What you’ll learn
Readers can be taken in the course of the technique of development a mashup of a number of info resources and APIs, utilizing Tourfilter’s live performance and occasion facts to map concert events and venue details taking place within sight. developing GeoRSS and KML documents can be lined, exhibiting readers easy methods to put up their content material with geographic metadata and inspiring their clients to have interaction with their facts in new and fascinating ways.
Who is that this e-book for?
This ebook is aimed toward builders, designers, and technologists trying to discover Google’s new Mapplet expertise. The publication can be an excellent source for these simply entering into Map–based purposes and mashups, in addition to for professional Maps builders trying to succeed in a longer viewers with their mashups on maps.google.com.
Read or Download Google Maps Mashups with Google Mapplets PDF
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Extra info for Google Maps Mashups with Google Mapplets
These are a few of the popular flavors of the moment, and you might retrieve any of them from a remote server or with a web service. The following sections highlight the ones you’ll be using in this book. CSV: The Equivalent of Cave Paintings Comma-separated values (CSV) is an ancient file format that you’ve most likely encountered as an export type for spreadsheets and flat-file databases. It is a plain-text data format that uses commas to delimit simple fields in a text file. Google Maps Mashups with Google Mapplets 35 It’s worth a mention, though it’s not as commonly used on the Web as some of the other formats mentioned next.
GetElementsByTagName() will search the DOM object and return an array of DOM elements matching the name you are looking for (marker in this case). getElementsByTagName("marker"); 50 Google Maps Mashups with Google Mapplets The variable markers now contains an array of DOM elements. Next, it’s a matter of looping over the markers array, extracting all the information for each marker—band/title, venue name, latitude, and longitude. 0053" />), you can use the DOM function getAttribute() to extract each of the fields from the marker element.
Using the APIs, you can retrieve remote data as text, XML, or JSON. The three API calls are as follows: _IG_FetchContent() takes a URL as an argument and returns the text from the given URL. This API should be used when working with text or HTML content. _IG_FetchXmlContent() takes a URL as an argument and returns the XML content as a DOM object. This should be used when retrieving XML content. _IG_FetchFeedAsJSON() should be used when retrieving RSS or Atom feeds. This takes a URL as an argument and returns the feed as a JSON object.
Google Maps Mashups with Google Mapplets by Michael Young