With the emergence of intelligent building and smart city concepts,building informa-tion modeling(BIM)technology and geographic information system(GIS)technology have rapidly made significant progress in their respective fields.Firstly,the characteristics of terrain data and point data are analyzed,then the conversion of geometric information of BIM model is completed through coordinate conversion and geometric reconstruction,and finally the semantic information is filtered and mapped.Through BIM+GIS technology,urban planning is dis-played and analyzed in the form of 3D scene,so that planners can understand the spatial layout and resource distribution of the city more intuitively and comprehensively,and thus carry out scheme design and evaluation better.
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