Data Preparation for GIS based Land Suitability Modelling: A Stepped Approach Shabir Hussain Khahro, Abd Nasir Matori, Imtiaz Ahmed Chandio and Mir Aftab Hussain Talpur E3S Web Conf., 101 (2019) 02001 Published online: 14 June 2019 DOI: 10.1051/e3sconf/201910102001