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《Surveying and Mapping of Geology and Mineral Resources》 2018-04
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Sunlight Analysis of Buildings Based on GIS

SUN Cai-min;XU Jun;North China Institute of Science Technology;  
This paper is aimed at finding quickly the tall buildings with the substandard sunlight by the method of GIS spatial analysis,which generates the shadow of back facades of the buildings at 12∶ 00,13∶ 00 and 14∶ 00 on winter solstice day,and checks whether the building center of mass is in the shadow,and judges whether the building meets the sunlight standard requirements specified in the standard. Its process includes that the vector map is transformed into the grid map,drawing the slope direction map of building,extracting the outline of backlight facade,calculating the height of backlight facade,producing the shadow,carrying out shadow superposition,converted the raster data to vector data,and searching for the substandard buildings and importing them into new layers,etc. Compared with the traditional method,the proposed method is simple,fast and efficient.
【CateGory Index】: P208;TU113.3
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