Google's map came out, I have to sigh, think about it, Microsoft is difficult
Only UI it can be seen.
For so many years old web technology can be used so delicate, only to prove applications not only need technology
WEBGIS, he is later, maybe it is to buy or use others to carry forward, but use one, have to be two.
A few cooked places, maybe not a patent, but it is indeed a bit.
DHTML is used as fire. This can experience this in each WEB application of Google. There is really different from Google World.
WebGIS's performance is nothing more than a few, one is to use dynamically transferring pictures DHTML performance, one is an applet or ActiveX control display vector data.
But the two effects have defects, and they cannot be satisfied.
Google has made the map to make it comfortable with tips, and he belongs to the previous kind.
Divide the entire screen into a few small pieces, such as a small matrix, each area is passed to the client through the small map, and can be smooth transition, the display speed is much more than the whole picture. Second, it may be transferred through different cluster servers. The details are treated really cool.
Take a look, use it.
Before I heard that Google started working with domestic WebGIS service providers. It seems that it is not far from the Chinese map.
