Polymaps is a free JavaScript library for making dynamic, interactive
maps in modern web browsers.Polymaps provides speedy display of multi-zoom datasets over maps,
and supports a variety of visual presentations for tiled vector data, in
addition to the usual cartography
from OpenStreetMap,
CloudMade,
Bing, and other providers of
image-based web maps.Because Polymaps can load data at a full range of scales, it’s
ideal for showing …