You can submit a specific address as well. E.g., you can try zooming to directly to 100 meters here, and you can see the buildings in question. The locations are only accurate to about 10 meters, though, so you might not come up on exactly the right building. Another example of a similar service is our gazetteer service. More About Layers .
Layers are basically of two types, raster and vector.
For example, the annotations are all implemented as vectors of various sorts, as are the results of the geographic queries we demonstrated. Note that when we zoom in on vectors, they still look pretty good, since they are given as coordinates. An image is at a fixed level of resolution. When the GIS Viewer shows you an image at different zooms, it has to shrink or expand the image to fit the zoom. If you zoom in past the resolution of the image, it begins to look grainy.