Vicmap Position - AGD66 and GDA94 Transformation Sample Point
nonGeographicDataset:
TRANSFORM66_94
The test data set can be used to test high accuracy coordinate transformation (for compiled GIS data) and coordinate conversion in and around Victoria in relation to the Geocentric Datum of Australia. The test data can be used to compare outputs from software that:
· Claims to use the official Intergovernmental Committee on Survey and Mapping (ICSM) high accuracy combined 7 parameter/distortion model transformation process and incorporating or derived from file data contained in called National 66 (13.09.01).gsb (refer to (http://www.anzlic.org.au/icsm/gdatm/) which is provided in the National Transformation Version 2 (NTv2) grid file format.
· Claims to perform conversions between coordinate types relating to the Australian Geodetic Datum and Geocentric Datum of Australia including:
- Geographicals: Latitude and Longitude coordinates (ie AGD66 and GDA94),
- Universal Transverse Mercator (UTM) grid coordinates (ie Australian Map Grid 1966 (AMG66) and Map Grid of Australia 1994 (MGA94)) and
- Custom Lambert conformal conic projection coordinates relating to the Land Victoria Vicgrid66 and Vicgrid94 projection specifications as they apply to Victoria (refer to www.giconnections.vic.gov.au)
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Citation proposal Citation proposal
(2022) Vicmap Position - AGD66 and GDA94 Transformation Sample Point Department of Energy, Environment and Climate Action https://metashare.maps.vic.gov.au/geonetwork/srv/eng/catalog.search#/metadata/62112cd5-227d-508f-8d06-0e2b2775f703 |
Details
Contacts
Cited responsible party
No information provided.
Cited responsible party
No information provided.
Cited responsible party
No information provided.
Cited responsible party
No information provided.
Point of contact
Department of Energy, Environment and Climate Action
-
VSDL Data Manager
(VSDL Data Manager)
PO Box 500
East Melbourne
Vic
3002
Australia
Identifiers and Keywords
- ANZLIC Id
- ANZVI0803002643
- Victorian Spatial Data Library (VSDL) Schema
- VMREFTAB:TRANSFORM66_94
- Jurisdiction
- Victoria
- Topic category
-
- Geoscientific information
Resource Constraints
- Use limitation
- The test data is not to be referred to by users as verifying compliance with NRE or ICSM standards.
- Classification
- Unclassified
- Creative Commons Attribution 4.0 (CC-BY)
Other Dataset Details
- Date ( Revision )
- 2022-07-14
- Date ( Publication )
- 2023-06-01T09:04:14
- Status
- Completed
- Purpose
- Validate software and data used to transform Land Victoria's data from AGD66 to GDA94 datum.
- Credit
- The data set selection, test design, software management and output validation is credited to: Geoff Parkes Land Information Group Ross Honeyman Land Information Group Dr Philip Collier Department of Geomatics Melbourne University Martin Hale LIG
- Supplemental Information
- Related Documents: None
- Maintenance and update frequency
- As needed
- Maintenance date ( Publication )
- 2023-03-17T20:14:13
Spatial
- Spatial representation type
- Text, table
- Reference system identifier
- 4283
Temporal
- Begin date
- 2002-07-01
- End date
- 2003-07-01
Quality
- Conceptual Consistency
- submillimter
- Missing Data
- The data set covers the state of Victoria and immediate surrounds and consists of 160 points spread across the state of Victoria and includes 60 points sourced from the (ICSM) 'Sample AGD66 - GDA94 Transformation' points set contained in the file Transtest.xls found in the GDA Technical Manual (http://www.anzlic.org.au/icsm/gdatm/). The sub set of ICSM points are located in and immediately around the state of Victoria. Completeness Verification: This data set was generated by Land Victoria staff using FME (Build 444) configured to use the AGD66/GDA94 NTv2 grid file 'A66 National (13.09.01).gsb'. The starting data were AGD66 geographicals in decimal degrees to 15 decimal places. The actual values supplied as input to FME were the latitude and longitude coordinates expressed in decimal degrees. These were computed from corresponding degrees, minutes seconds values prior to being fed into FME. Coordinate pairs were then computed directly from these AGD66 geographical values using FME's @eproject function. The FME outputs were then verified by a member of the Department of Geomatics, University of Melbourne by comparison with GDAit and GDAy transformation software (refer to ICSM GDA web site at www.anzlic.org.au/icsm/gdatm/index.html) and formulae derived from first principles as follows: 1. Geographical coordinates The GDA94 latitudes and longitudes produced by FME were compared to results from both GDAit and GDAy. A perfect agreement to 9 decimal places of degree resulted. The number of significant decimal places for mathematical comparison was selected to ensure reliable backwards and forwards transformation processing could be performed such that the position solution would not degrade after many transformations between datums at the submillimetre level. 2. Universal Transverse Mercator Projection coordinates The MGA94 coordinates produced by FME were then compared to the results from GDAit and GDAy with small discrepancies ranging up to about 0.3 mm between all three solutions. It is believed that these differences are likely to be the result of a small rounding affect caused through the conversion from geographicals to map grid. These differences are not considered to cause concern for users. 3. VicGrid Vicgrid66 transformations where verified by comparing FME results with results obtained via ESRI's ArcInfo project file command. Vicgrid94 transformations were verified by comparing FME results with Phil Collier's testing process. Agreement was verified at about 0.1 mm. (refer to www.giconnections.vic.gov.au for vicgrid parameters).
- Attribute Quality
- 1:1
- Positional Accuracy
- Datum transformation and coordinate conversion was verified at the submillimetre level.
Lineage
- Statement
- Dataset Source: The data was processed initially in June 2002 by the Land Information Group and later verified by, the Department of Geomatics, University of Melbourne in the same month. Dataset Originality: Primary
Attributes
-
Column Name Obligation Unique Data Type Data Length Data Precision Data Scale Reference Table Owner Reference Table Name Reference Table Code Column Name Short Column Name Definition AGD66_LAT O N NUMBER 22 11 9 NONE NONE NONE AGD66_LAT GDA94_LAT O N NUMBER 22 11 9 NONE NONE NONE GDA94_LAT AMG_NORTH O N NUMBER 22 11 4 NONE NONE NONE AMG_NORTH MGA_EAST O N NUMBER 22 10 4 NONE NONE NONE MGA_EAST ZONE O N NUMBER 22 2 0 NONE NONE NONE ZONE POINT O N NUMBER 22 5 0 NONE NONE NONE POINT UFI O N NUMBER 22 14 0 UFI UFI_CREATED O N DATE 7 UFI_CR VICGRID66_NORTH O N NUMBER 22 11 4 NONE NONE NONE VG66_N VICGRID94_NORTH O N NUMBER 22 11 4 NONE NONE NONE VG94_N AMG_EAST O N NUMBER 22 10 4 NONE NONE NONE AMG_EAST VICGRID66_EAST O N NUMBER 22 11 4 NONE NONE NONE VG66_E MGA_NORTH O N NUMBER 22 11 4 NONE NONE NONE MGA_NORTH AGD66_LONG O N NUMBER 22 12 9 NONE NONE NONE AGD66_LONG VICGRID94_EAST O N NUMBER 22 11 4 NONE NONE NONE VG94_E GDA94_LONG O N NUMBER 22 12 9 NONE NONE NONE GDA94_LONG
About the Metadata Record
- Metadata identifier
- urn:uuid / 62112cd5-227d-508f-8d06-0e2b2775f703
Processor
DEECA
-
UI, VDP
Contact
No information provided.
- Resource Type
- Non geographic dataset
- Date info ( Creation )
- Date info ( Revision )
- 2022-07-14
- Standard Name
- ISO 19115-3:2018
- Profile Name
- DELWP Profile
- Profile Version
- Version 1
- Profile Date
- 2019-05-24
Metadata Constraints
- Classification
- Unclassified
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