By Michael Purvis, Jeffrey Sambells, Cameron Turner
Until lately, development interactive web-based mapping purposes has been a bulky affair. This replaced while Google published its strong Maps API. Beginning Google Maps purposes with Hypertext Preprocessor and Ajax was once written that can assist you make the most of this expertise on your personal endeavorswhether you’re an fanatic taking part in for enjoyable or a certified development for revenue. This booklet covers model 2 of the API, together with Google’s new Geocoding service.
Authors Jeffrey Sambells, Cameron Turner, and Michael Purvis get rolling with examples that require infrequently any code in any respect, yet you’ll speedy turn into familiar with many elements of the Maps API. They exhibit strong equipment for at the same time plotting huge information units, developing your personal map overlays, and harvesting and geocoding units of addresses. You’ll see tips to arrange substitute tile units and the place to entry imagery to exploit for them. The authors even enable you to construct your individual geocoder from scratch, for these high-volume batch jobs.
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Additional resources for Beginning Google Maps Applications with PHP and Ajax: From Novice to Professional
Qxd 34 7/26/06 4:56 PM Page 34 CHAPTER 3 ■ INTERACTING WITH THE USER AND THE SERVER Listing 3-1. onunload = GUnload; Now you have a solid starting point for your web application. When viewed in your web browser, the page will have a simple map with controls centered on Palo Alto, California (Figure 3-2). For this example, the starting GLatLng is not important, so feel free to change it to some other location if you wish. Figure 3-2. qxd 7/26/06 4:56 PM Page 35 CHAPTER 3 ■ INTERACTING WITH THE USER AND THE SERVER Listening to User Events The purpose of your map is to allow visitors to add markers wherever they click.
FromLatLngToDivPixel(latlng) will return a GPoint representation of the X and Y offset relative to the DOM element containing the map. Asking for More Information with an Info Window You could simply collect the latitude and longitude of each marker on your map, but just the location of the markers would provide only limited information to the people browsing your map. Remember interactivity is key, so you want to provide a little more than just a marker. For the geocaching map, visitors really want to know what was found at each location.
The drive down the Bayshore Freeway to the Googleplex That’s it. You can use the same principles to make an annotated map of your vacation or calculate how far you’re going to travel, and best of all, it’s a snap to share it. com/maps/show/17131. Of course, since this is a programming book, you’re probably eager to dig into the code and make something really unique. Wayfaring may be nice, but the whole point of a mashup is to automate the process of getting a lot of data combined together. ■Tip Mashup is a term that originates from DJs and other musicians who create new compositions by “mashing” together samples from existing songs.
Beginning Google Maps Applications with PHP and Ajax: From Novice to Professional by Michael Purvis, Jeffrey Sambells, Cameron Turner