《Table 2 Topographical Map Involved in 1:10, 000 Fengjie Mapsheet》

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《1∶50000重庆市奉节县幅灾害地质图数据集》

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When 1:10，000 topographic map was used in ArcGIS（ArcToolBox>Data Management Tools>Projections and Transformations Tools），the data whose central meridian was 108in Row A should be projected and transformed into the central meridian of 111.Then，20 maps involved were pieced together.By virtue of ArcGIS，high precision DEM and mountain shade were generated，which acted as the background base map.