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Google Launches Mapping Service
Alex Reynolds writes "The beta version of Google Maps is now online, offering an alternative to Mapquest with what some might describe as a very much improved user interface, offering a cleaner layout, drop shadows, clickable waypoints and keyboard controls that allow you to move and zoom the map. For IE and Firefox/Mozilla at this point (no Safari or Opera support, as yet)."
GoogleMaps + AdSense + Google Local = Massive profits for Google and a fantastic customer experience.
I knew the folks at Google were smart, but...
I'm a big tall mofo.
Very nice interface, and certainly less cluttered than maps.yahoo.com or mapquest.
But best of all -- my new subdivision is on the map whereas it's absent on all the other free map services that the pizza guy, furniture stores, and other delivery folks keep trying to use because they've never heard of my street before.
Google's "DO NO EVIL" company value really shows in this excellent service.
The surest sign of intelligent life in the universe is that none of it has tried to contact us. -- Calvin & Hobbes
1) They won't take you the wrong way down one-way streets.
2) They will get you to your destination instead of 95% of the way there.
Except for ending slavery, the Nazis, communism, & securing American independence, war has never solved anything.
Yeah, it is a very cool interface. Also, it loads incredibly fast, and I think it's probably by far the clearest map rendering I've seen anywhere. Extremely good visual quality.
For other choices, I still love Map24. They've got Europe and North America, and the whole thing in a neat Java applet that is also very usable. But Google's map is gonna be tough competition for them...
Also, you gotta love the typically Google way of doing your address or directions queries... just say "Kansas City to Los Angeles" etc. and it works.
But of course it's still Beta. A simple test for "Wilmington, DE to Jersey City, NJ" in my case renders a misplaced blue line that I can't quite make sense of. But if that's the only problem...
The image is made out of an array of tiles, each a GIF about 3.6K in size. They have URLs like this: http://mt.google.com/mt?v=.3&x=5&y=-4&zoom=8 As you pan to the right, each tile's src attribute gets the url of the tile to its right, which is of course already in browser cache. The rightmost column of five tiles is then fetched from the server. The very clever thing is how they make panning continuous. I have to look at their javascript to see how they accomplish it, it's quite an illusion. In any case, the efficiency of this approach accounts for the generous size of the map. and its responsiveness, which would be hard to achieve using conventional mapserver techniques.
I've worked with developing web map services before. This approach complicates some things you might want to do, but is probably how you'd do it if you wanted a very fast, ultra-scalable service I wouldn't be surprised if Google, which in many ways is in the information storage business, has got all these tiles pre-rendered somewhere. Normally, you'd render the gif for the entire map in a temporary directory somewhere. Natrually this approach is more processor and bandwidth sensitive, but saves on storage. Of course, it allows you to do other kinds of GISy things that probably would be hard to do with Google's approach, but those kinds of things are relatively rare in this kind of application.
I'd like to figure out how to map from geographic coordinate systems to the bizarre system they're using. Then I could use the mapping service for my own uses.
Altogether, it's an interesting first effort. A rectangle drag zoom function would be welcome.
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