What types of surface data can Terrain use?
You can import point, string and polygon data from text files, spreadsheets, SQL/ODBC database tables and other file formats using the data source drivers. The data value you wish to model, i.e. the elevation or parameter value, should is assigned to the Value (Z) grid coordinate. Data values may be derived from topography surveys, geochemical soil sampling, water bore levels or geophysical surveys.