Topographic Data (Vector)
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.
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This figure illustrates the relationship between the basic concepts of a GIS Vector Data |
A Sample of GIS Vector Data supplied by NGI |