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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

  1. Prepare 2-D or 3-D digital elevation model (DEM).
  2. Create 2-D drawings.
  3. Create 3-D model or DEM.
  4. Produce output.

Performance Evidence

A person demonstrating competency in this unit must satisfy the requirements of the elements, performance criteria and foundation skills of this unit. The person must also use a geographic information system (GIS) or computer-aided design (CAD) environment to develop two-dimensional (2-D) and three-dimensional (3-D) terrain visualisations that meet specifications for two different projects.

While developing the above 2-D and 3-D terrain visualisations, the person must:

analyse and define job specifications, constraints and main work activities

conduct web-based searches to identify available spatial data and verify its suitability to meet drawing specifications

prepare the CAD environment by setting up the hardware and software system and drawing defaults and customising menus

design the surface elevation, orientation and views to meet job specifications

exercise precision and accuracy in relation to terrain visualisations

select and use spatial computing platforms and software systems to prepare drawings and models that meet specifications relating to:

accuracy

completeness

coverage

density

logical consistency

use appropriate interpolation techniques to convert from vector to raster data

communicate clearly with clients and colleagues to clarify design requirements and detail

comply with standard operating procedures, drawing standards and organisational requirements relating to:

completing records and reporting

quality and risk management

working safely when using the equipment specified in the assessment conditions

create and manipulate entities in 3-D space to develop contour, slope and shaded relief maps of an area

create detailed 2-D views using various scales

create a digital elevation model in 3-D using mathematically defined surfaces and point or line data

identify and assess constraints and problems relating to spatial data

save drawing files in a range of formats.


Knowledge Evidence

A person demonstrating competency in this unit must demonstrate knowledge of:

computer platforms and software for GIS, CAD and digital elevation models (DEM)

copyright and ownership constraints relating to spatial data

data formats and precision and accuracy requirements for preparing terrain visualisations in 2-D drawings and 3-D models

digital image processing techniques

display principles, including:

colour

composition

font type

legends

media

scale

size

text and line style

existing spatial datasets and dataset sources

GIS and CAD principles, capabilities and uses in relation to creating terrain visualisations

methods for validating spatial data sources and constraints on use

organisational requirements relating to records and reporting

remote sensing technologies that capture raw elevation data

key features of spatial referencing systems

techniques for modifying existing 2-D and 3-D models

types of products that can be derived from a DEM.