Most existing GIS service systems focus more on providing geodata services than geoprocessing services, and offer very limited geoprocessing functions.
许多现有的GIS服务系统都集中于提供地理数据服务,而很少提供地理处理服务。
Most geoprocessing tools take datasets as input and produce new datasets as outputs, so most tool dialogs ask you where you want to write the output dataset.