More than ninety five years ago National Geo-spatial Information (NGI), a component of Department of Rural Development and Land Reform (DRDLR) commenced with the establishment of an integrated survey system and provision of extensive mapping and aerial imagery coverage of the country. NGI is also known as South Africa's national mapping organisation.
The integrated survey system expedites and facilitates orderly development while the mapping and associated products facilitate sustainable development. In more recent years, NGI established an active control survey network of continuously operating GNSS base stations covering South Africa, all managed and controlled by a single control centre situated in the offices of NGI.
NGI has the largest repository of historical aerial photography dating back to 1926 and continues to provide national digital aerial imagery coverage.
NGI establishes and maintains the national geodetic and control survey infrastructure.
NGI provides national mapping, digital topographic and other Geo-Spatial Information.
NGI is a key contributor to the South African Spatial Data Infrastructure.
NGI provides professional and advisory services.
The integrated topographic information system (iTIS) portal is currently being developed to provide intranet and internet users access to the iTIS using a Web Feature data Server (WFS), Geography Markup Language (GML) data Server, Web Map Service (WMS) and access to imagery.
The WFS and GML data Servers will permit database connection to the iTIS. GML is an open format developed by the Open Geospatial Consortium (OGC). The WMS will provide thin-client access to the iTIS in order to create customised maps which can then be downloaded by the user.