NZQA registered unit standard
23860 version 2
Page 1 of 3
Title
Demonstrate knowledge of, and calculate on, map projections
Level
6
Credits
5
Purpose
People credited with this unit standard are able to demonstrate
knowledge of map projections, and perform calculations on
projections.
Classification
Surveying > Geodetic Surveying
Available grade
Achieved
Explanatory notes
1
Documentation relevant to this unit standard includes but is not limited to:
Lee, L P, First-order, Geodetic Triangulation of New Zealand 1909-1949; 1973-1974.
(Wellington: Department of Lands and Survey, 1978), referred to as Geodetic Datum
1949;
Snyder, J P, Map Projections: A Working Manual, US Geologic Survey Professional
Paper 1395 (Washington, DC: US Government Printing Office, 1987);
New Zealand Map Grid (NZMG) available from http://www.linz.govt.nz/data/geodeticsystem/datums-projections-heights/projections/new-zealand-map-grid-nzmg.
2
Definitions
Geodetic convention refers to the principles and practices outlined in Bomford, G,
Geodesy Fourth edition (Oxford: Oxford University Press, 1980) and in Land
Information New Zealand (LINZ) publications and fact sheets, available from the
survey system and geodetic information pages at http://www.linz.govt.nz.
NZGD 1949 refers to the New Zealand Geodetic Datum dated 1949.
NZGD 2000 refers to the New Zealand Geodetic Datum dating from 2000.
NZTM refers to New Zealand Transverse Mercator.
Software packages for this unit standard include LINZ website conversion utilities
such as SNAP and CONCORD downloadable at http://www.linz.govt.nz.
UTM refers to Universal Transverse Mercator.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of map projections.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
23860 version 2
Page 2 of 3
Evidence requirements
1.1
The rationale for using map projections is outlined in accordance with geodetic
convention.
1.2
Map projection classifications are outlined and explained in terms of the
features they correctly represent.
1.3
Map projection sub-classifications are outlined in terms of geometrical
development.
Range
1.4
Individual projections are described in terms of how they represent position.
Range
1.5
sub-classes – conical, cylindrical, zenithal, polynomial.
five projections including – NZTM, NZMG, Transverse Mercator,
UTM, one other
The principal elements of a projection are defined in accordance with geodetic
convention.
Range
grid, graticule, scale coefficient, scale error, true origin, false
origin, projection coordinate, grid scale constant, convergence.
Outcome 2
Convert coordinates between different projections.
Evidence requirements
2.1
Using a software package, coordinates are converted between projections in
accordance with software manufacturer’s instructions.
Range
2.2
between NZGD 2000 geographical and NZGD 2000 meridional
circuit;
between NZGD 2000 geographical and UTM;
between NZGD 2000 meridional circuits;
between NZGD 1949 meridional circuit and NZGD 2000
geographical;
between NZTM and NZMG.
Elements are derived on map projections between two points in accordance
with geodetic convention.
Range
Infrastructure ITO
SSB Code 101813
projections – NZTM, NZMG, Transverse Mercator, UTM, one
other;
includes but is not limited to – grid bearing, plane bearing, chord
distance.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
23860 version 2
Page 3 of 3
31 December 2020
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
25 February 2008
31 December 2017
Review
2
21 April 2016
N/A
Consent and Moderation Requirements (CMR) reference
0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMRs). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Infrastructure ITO qualifications@connexis.org.nz if you wish to
suggest changes to the content of this unit standard.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016