Elements and Performance Criteria
- Prepare 2-D or 3-D digital elevation model (DEM).
- Computer-aided design (CAD) environment or surface elevation is designed according to organisational requirements and project specifications.
- Orientation is established to job requirement.
- Views are established to job requirement.
- OHS issues are considered at all times.
- Skills and knowledge are updated to accommodate changes in operating environment and equipment.
- Create 2-D drawings.
- Spatial computing platforms and software systems are assessed for suitability against specification.
- Availability of suitable data is verified with the potential suppliers.
- Constraints on use of spatial data are assessed against specification.
- Drawing entities and attributes are linked to database attributes to suit project specification.
- Detailed views are created using various scales to meet project specification.
- Existing 2-D model is modified if necessary to meet project specification.
- Create and modify a 3-D model or DEM.
- Surface elevation is modelled by mathematically defined surfaces or by point or line data and according to project specification.
- Products that can be derived from a DEM are determined.
- Entities are created in 3-D space to job requirement.
- Entities are manipulated in 3-D space to job requirement.
- DEM is developed with a range of thematic data and profiles generated and draped over the model.
- A contour map of an area is created by employing procedures appropriate to the data format and software.
- Slope map of an area is created from gradient and aspect components.
- Shaded relief map of an area is created from gradient and relief map representations.
- Existing 3-D model is modified if necessary to meet project specification.
- Produce output.