摘要
With the rapid development of computer technology and mapping technology,three-dimensional map of the electronic map gradually get popular.Three-dimensional map is applied to the overall form of the representation space phenomena at present,including three-dimensional landscape maps,virtual simulation city,and three-dimensional topographic map etc..Three-dimensional electronic map has the advantage of authenticity,intuitive,azimuth and stereo,etc..The technological process of three-dimensional city map to be drawn is elaborated in detail.