Contacts

Identifiers and Keywords

ANZLIC Id

ANZVI0803002452 

Victorian Spatial Data Library (VSDL) Schema

FORESTS:RFA25 

Jurisdiction

Victoria 

Topic category

• Biota

Resource Constraints

Use limitation

. 

Classification

Unclassified  

Creative Commons Attribution 4.0 (CC-BY)

• 
• License Text

Other Dataset Details

Date ( Revision )

2020-05-04

Date ( Publication )

2018-02-01T12:05:18

Status

Completed  

Purpose

RFA25 is the key layer at 1:25 000 for all Departmental Regional Forest Agreement planning and reporting. This layer is used to provide the basic spatial framework within which cartographic products for RFA reports are derived. 

Credit

Andrew Densley, Bob Wilson 

Supplemental Information

History: RFA25 was created to eliminate the problem of RFA boundaries not matching existing 1:25000 information on digital and hardcopy maps generated for the SFRI project. Relationship to other Datasets: Most of the features in this coverage were derived from the following layers: HYDRO25, ROAD25, CONT25, FORMB25, HYDROP25, LANDMMT25, RAIL25, SHORE25, PARCEL, FMA100 and an old 1:100000 RFA boundary coverage. Current Design Issues: RFA25 boundary arcs, where it could not be determined where the corresponding arc in FMA100 or an old 1:100000 RFA boundary coverage was originally sourced (i.e. not found in HYDRO25, ROAD25, CONT25, FORMB25, HYDROP25, LANDMMT25, RAIL25, SHORE25 or PARCEL), were manually digitised based on an estimation of the most logical alignment of the arc. Boundary arcs that appeared to follow ridgelines in FMA100 or old RFA coverages where generated using a DEM created from the CONT25 library layer. Related Documents: None Refer to the metadata of the following layers: HYDRO25, ROAD25, CONT25, FORMB25, HYDROP25, LANDMMT25, RAIL25, SHORE25, PARCEL and FMA100. 

Maintenance and update frequency

As needed  

Maintenance date ( Publication )

2018-02-01T12:05:18

Spatial

Spatial representation type

Vector  

Reference system identifier

4283

Temporal

Begin date

1999-09-13 

End date

now  

Resolution

Horizontal Accuracy

25m  

Quality

Conceptual Consistency

All values contained In the AAT and the PATs have been checked against the appropriate lists of valid codes. 

Missing Data

All areas which are covered by a published Forest Management Plan are accounted for. All polygons contain an RFA name and number. All arcs are atrributed for their original AS2482 sourced from other 1:25000 datasets (AS2482_25) and the AS2482 from corresponding arcs in FMA100 (AS2482_100) or old 1:100000 RFA boundary coverages. 

Attribute Quality

All arc features derived from another layer are validated within that layer prior to being copied into RFA25. All arc features captured within Drafting are coded for AS2482. Those that were supplied by the Area may not necessarily have retained the AS2482 code. All labels are coded for RFA name. 

Positional Accuracy

Precision: Boundary accuracy 25-50m Determination: Estimate 

Lineage

Description

The template for FMA25 was derived from an old 1:100000 RFA boundary ARCINFO coverage. The as2482 attributes in that coverage and FMA100.aat formed the basis for extracting the arcs from either HYDRO25, ROAD25, CONT25, FORMB25, HYDROP25, LANDMMT25, RAIL25, SHORE25 or PARCEL in order to produce a 1:25000 RFA layer. All polygon attributes come directly from the existing 1:100000 RFA boundary coverage. 

Statement

Dataset Source: RFA25 was created using arcs and boundary information from the following datasets: HYDRO25, ROAD25, CONT25, FORMB25, HYDROP25, LANDMMT25, RAIL25, SHORE25, PARCEL, FMA100 and old RFA boundary coverages. Refer to the metadata for these layers for more detailed information of there origin. Dataset Originality: Derived 

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
NAME	O	N	VARCHAR2	50						NAME
RFA	O	N	NUMBER	22	10	0				RFA
AREASQM	O	N	NUMBER	22	18	2				AREASQM
HECTARES	O	N	NUMBER	22	18	2				HECTARES

About the Metadata Record

Metadata identifier

urn:uuid / 6e2e0d1c-dd6e-559b-ada4-bfa432420ced