According to the shape white paper introduction to the shape format, read the spatial data from the shape file. According to the definition of spatial objects in the SFF model, an object-oriented programming language is used to implement the GIS spatial data structure, and the spatial data read from the shape file is stored in the spatial data structure. Using VC as an IDE, VC drawing functions and other functions are called to visualize the spatial data structure in Practice 2. And to achieve GIS commonly used zoom, zoom out, roaming and other functions.

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