Contacts

Identifiers and Keywords

ANZLIC Id

ANZVI0803002495 

Victorian Spatial Data Library (VSDL) Schema

VMHYDRO:HY_NAVIGATION_POINT 

Jurisdiction

Victoria 

Topic category

• Elevation
• Inland waters
• Environment
• Farming
• Geoscientific information

Resource Constraints

Use limitation

. 

Classification

Unclassified  

Creative Commons Attribution 4.0 (CC-BY)

• 
• License Text

Other Dataset Details

Date ( Revision )

2020-02-21

Date ( Publication )

2023-09-27T20:41:15

Status

Completed  

Purpose

Vicmap Hydro provides an accurate representation of natural and man made Hydrographic features across Victoria, at a capture scale of 1:25,000. It is used in a variety of applications, particularly in emergency services, natural resource management, planning and development, and digital map publication. 

Supplemental Information

Related Documents: None www.delwp.vic.gov.au/vicmap 

Maintenance and update frequency

Irregular  

Maintenance date ( Publication )

2023-04-18T21:54:24

Spatial

Spatial representation type

Vector  

Reference system identifier

4283

Temporal

Begin date

1999-01-01 

End date

2000-12-31 

Resolution

Horizontal Accuracy

25m  

Quality

Conceptual Consistency

The allowable error in attribute accuracy ranges between 1% to 5% error. Logical consistency is a measure of the degree to which data complies with the technical specification. The test procedures are a mixture of scripts, microstation MGE program and on-screen visual checks. 

Missing Data

The dataset does not contain all Navigation points in the state. However there is no intention to capture all the points. In this sense the dataset is complete. 

Attribute Quality

The allowable error in attribute accuracy ranges between a 1% allowable error to 5% error. For this product attribute accuracy ranges between a 1% to 5% error. For this product attribute accuracy is a measure of the degree to which features and attribute values of spatial objects agree with the information on the source material. 

Positional Accuracy

The planimetric accuracy attainable will be the sum of errors from three sources:the positional accuracy of the source material, errors due to the conversion process, errors due to the manipulation process. For topographic base derived data this represents an error of 8.3m on the ground for 1:25,000 data. A conservative estimate of 10m for the standard deviation will be used in any data quality information. Alternate and equal ways of expressing this error are: not more than 10% of well-defined points will be in error by more than 16 m. The worst case error for the data is +/- 30 m. For vertical positional accuracy of points determined from contours there is an expectation that the elevation accuracy (standard deviation) will be half the value of the contour interval. 

Lineage

Description

- Conversion of existing mapping - compilation conversion 30% and repromat conversion 50% - digital stereo capture - 20% -The majority of the conversion of existing mapping and approximately 30% of the digital stereo capture were outsourced to private contractors and the remainder was captured in house. Contractor's primarily scanned and vectorised existing repromat with a small amount of hand digitising done in some instances. 

Statement

Dataset Source: The line work and points were derived from the Vicmap Digital Topographic (VDT) map base coordinated by LIG. VDT evolved from Victoria's printed 1:25,000 Topographic Map Series program together with the need to supply a control framework for the creation of the rural Digital Cadastral Mapbase. The capture scale is 1:25,000 Statewide and the coverage, except for minor border issues is also statewide. 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
UFI	O	N	NUMBER	22	9	0	NONE	NONE	NONE	UFI
CREATE_DATE_PFI	O	N	DATE	7			NONE	NONE	NONE	CRDATE_PFI
NAMED_FEATURE_ID	O	N	NUMBER	22	9	0	NONE	NONE	NONE	NFEAT_ID
LIGHTED	O	N	VARCHAR2	1			VMREFTAB	HY_LIGHTED	LIGHTED_CODE	LIGHTED
SURFACE_RELATIONSHIP	O	N	VARCHAR2	1			VMREFTAB	HY_SURFACE_RELATIONSHIP	SURFACE_RELATIONSHIP_CODE	SURF_REL
BEACON_PRESENT	O	N	VARCHAR2	1			VMREFTAB	HY_BEACONED	BEACONED_CODE	BEACN_PRES
SUPERCEDED_PFI	O	N	NUMBER	22	9	0	NONE	NONE	NONE	SUPER_PFI
BEACON_TYPE	O	N	VARCHAR2	1			VMREFTAB	HY_BEACON_TYPE	BEACON_TYPE_CODE	BEACN_TYPE
FEATURE_QUALITY_ID	O	N	NUMBER	22	9	0	NONE	NONE	NONE	FQID
CREATE_DATE_UFI	O	N	DATE	7			NONE	NONE	NONE	CRDATE_UFI
NAME	O	N	VARCHAR2	50			NONE	NONE	NONE	NAME
FEATURE_TYPE_CODE	O	N	VARCHAR2	30						FTYPE_CODE
BUOYED	O	N	VARCHAR2	1			VMREFTAB	HY_BUOYED	BUOYED_CODE	BUOYED
PFI	M	Y	NUMBER	22	9	0	NONE	NONE	NONE	PFI

About the Metadata Record

Metadata identifier

urn:uuid / 29f3c0fb-3b0f-5922-a6c3-e956327e38f5