Current research has been performed at Eötvös Loránd University, Institute of Cartography. Research emphasis: application of clustering spatial analysis of the open source ILWIS GIS. - Research aim: agricultural mapping of land cover types: south-west Hungary, Mecsek Hills. - Research process: Landsat TM scenes were classified into different land use types: natural vegetation coverage, anthropogenic areas and agricultural fields, sub-divided to various crop types. - Research output: three independent agricultural thematic maps of land cover types for years 1992, 1999 and 2006, created in ILWIS GIS.