Map Modeller is the most functional desktop GIS package in the Cadcorp SIS product suite. It is aimed at the experienced user, operating independently, or within a departmental or enterprise-wide framework.
Map Modeller provides all the benefits of Map Editor plus :-
advanced geometric construction and editing including the ability to create offsets, primitive trimming, line generalisation, rotation etc
the creation and support of link, node, chain and polygon topology and associated applications such as routing
advanced spatial analysis techniques including data buffering, Theissen polygons, grid analysis, contour mapping and flow-line generation.
the ability to create triangulated irregular networks (TINS) and digital terrain models (DTMs).
Surface draping of raster images and vector data over these structures produces effective 3D representations and 'Fly-Throughs'