The process of cadastral capture requires an integrated environment that has tools to facilitate capture from various sources, i.e. general plans, diagrams and servitudes and from various plane systems, i.e. Clarke 1880 Modified, WGS84 and local systems. In addition imperial and older measurements must be supported so that information can be captured, transformed and converted into a seamless spatial database. Built in error checking ensures that the final product is accurate, consistent and seamless. Compuplot has developed InfoMate for this purpose, a cadastral information system that has been used extensively in South Africa, Namibia, Swaziland and Botswana.
Co-ordinates are captured and verified to produce a control framework. Thereafter land parcels and servitudes are captured with reference to this framework using a procedure with built-in consistency checks implemented according to SG regulations. Extensive use is made of look-up tables and automatically derived values to ensure consistent capture of attributes.
A customised application is used for conversions of feature files into the cadastral database. The system uses the Surveyor-Generals Township and Farm tables to interpret the 21 digit-code and populate the complete cadastral description.
- City of Durban: Approximately 90 000 land parcels (both township and farm) were captured from original documents. Farms including Duikerfontuin, Bluff, Townlands and others were capture. Some of the diagrams dated back to the 1800’s and reconstructions and transformation were used extensively;
- Pietermaritzburg Municipality: Approximately 25 000 land parcels;
- Durban Metro: With the incorporation of the Durban Metro, 180 000 erven from the outer sub-structures were converted and checked;
- Eastern Cape: 130 000 erven converted from feature file format updated from original documents and checked against erf registers and compilations;
- KZN Local Municipalities including: Vulamehlo, Umzumbe, uMuziwabantu, Mpofana, Richmond, Kwa Sani, Greater Kokstad, Ubuhlebezwe, Umtshezi, Umlalazi, Mkhambathini, Impendle, Nquthu, Umvoti, Hlabisa, Ndwedwe, Okhahlamba, uMngeni;
- Department of Surveys and Lands, Botswana;
- Directorate of Survey and Mapping, Namibia;
- South Local Council;
Professional Staff Provided
- Project Manager;
- Professional Land Surveyors;
- Survey Technicians;
- GIS Technicians;
- Data Capturers.