A script-based workflow module for composition of geoprocesing functions in GRASS

Scientific workflow plays an important role in complex scientific computing. It can integrate various data and analysis functions to solve complicated geoprocessing problems which usually involve a couple of steps. They could be accomplished manually step by step in Geographic Resources Analysis Support System (GRASS), an open source Geographic Information System (GIS) software, or automated through a scientific workflow approach. In order to automate geospatial processes and facilitate reuse of constructed processes, a script-based workflow module is proposed to support integration of geoprocessing functions in GRASS.