This includes the popular 1:10 000 orthophoto and 1:50 000 topographic, numerous other smaller scale, provincial and national maps. Orthorectified imagery, elevation data (including DEMS), vector topographic data as well as raster maps are available digitally.
What is GIS Vector Data?
This is the representation of reality in the form of features (points, lines and areas) whose locations are stored as X, Y co-ordinates (its Spatial Attributes). In some instances these features would also contain the Z (height) co-ordinate, such as the in a contour feature. Non-Spatial Information or Attributes are also stored within the feature, this would give you descriptive information about this feature.
Thematic Map of Photogrammetric compiled DEM available
Thematic Map of 5M contours available (Bye product of the photogrammetric compiled DEM).
DEM (Digital Elevation Model) data describes the surface of the earth through a regular rectangular grid which can be visualised as a wire grid framework draped over the surface of the earth. Each grid intersection is defined by two components, i.e. a coordinate reference grid location(y, x) and associated height (H). The coordinate and associated height components are referenced to separate earth reference systems, i.e. a two dimensional (y, x) and one dimension (H) reference system. Collectively, the reference system can be described as a Compound Coordinate Reference System (CCRS) [ISO 2002]. The y and x coordinates are referenced to the Datum's and Coordinate Systems while the height component is reference to mean sea level.
Click on the links below to view the various map products we offer:
•1:10 000 Orthophoto Maps
•1:50 000 Topographical Maps
•1:250 000 Topo-Cadastral maps
•1:500 000 Topo-Admin Maps
•1:500 000 Aeronautical Edition Maps
•1:1000 000 International Civil aviation Organisational World Aeronautical Charts