The processing and application of the urban geographical basic data

Because the urban geographical basic data is in the data format, coordinate system, data quality can not satisfy with the need of most users. So the urban geographical basic data are processed before using. The purpose is that the data processing is to make the data meet the need of user. The ways of data are processed including the data format is changed, the coordinate is varied, layer is drew, data are edited, the maps are connected and topological relation is built. This article introduced the current condition of the Urban geographical basic data of our country, the data processing technique and method, and search in the information to the urban geographical data, network analysis, and space analysis carried on the discussion.