Map Modeller is the most functionally rich desktop GIS in the Cadcorp SIS product suite, designed for experienced GIS users who require advanced spatial analysis and modelling capabilities.

It adds the following capabilities to Map Editor:

3D design and analysis

Creation of triangulated irregular networks (TINs) and digital terrain models (DTMs), relief shading and surface draping of raster images and vector data for 3D visualisation purposes. Includes support for constrained Delaunay triangulation, allowing TINs to be created from a collection of surveyed elevations, with optional breaklines and bounding areas.

Advanced spatial analysis and thematic mapping

Including Thiessen polygon analysis, grid analysis, contour mapping and flow-line generation.

Viewshed and terrain analysis

Provides line-of-sight calculations used to determine all areas on DTM data that are visible from a chosen location, plus slope, aspect, and gradient grid analysis.