1. Illinois Informatics Institute and CyberGIS Center for Advanced Digital and Spatial Studies, University of Illinois at Urbana-Champaign, Champaign, IL, USA
2. CyberGIS Center for Advanced Digital and Spatial Studies and National Center for Supercomputing Applications (NCSA), and Department of Geography and Geographic Information Science, University of Illinois at Urbana-Champaign, Champaign, IL, USA
3. Illinois Informatics Institute and CyberGIS Center for Advanced Digital and Spatial Studies and National Center for Supercomputing Applications (NCSA), and Department of Geography and Geographic Information Science, University of Illinois at Urbana-Champaign, Champaign, IL, USA