Vicmap Lite - Water Polygon - 1:250,000 to 1:5,000,000

dataset: VMLITE_HY_WATER_AREA
This layer is part of Vicmap Lite and contains polygon features delineating hydrological features. Vicmap Lite datasets are suited for use between scales of 1: 250,000 and 1 : 5 million. The polygons were sourced from Vicmap Hydro. The level of attribute information, the number of features and the number of vertices has been simplified to suit the 1: 250,000 - 1 : 5 million scale range. The concept of a Scale Use Code has been introduced to help control the level of detail displayed. THIS DATASET WAS LAST UPDATED IN NOVEMBER 2015
 
Citation proposal Citation proposal

(2020)

Vicmap Lite - Water Polygon - 1:250,000 to 1:5,000,000

Department of Transport and Planning

Description

Title
Vicmap Lite - Water Polygon - 1:250,000 to 1:5,000,000 
Alternate title
VMLITE_HY_WATER_AREA 
Purpose
THIS DATASET WAS LAST UPDATED IN NOVEMBER 2015 
Supplemental Information
Related Documents: None 
Status
Completed 
 
 

Spatial

Horizontal Accuracy
25m 
Code
4283 
 
 

Maintenance

Maintenance and update frequency
As needed 
 
 

Contacts

  Point of contact

Cited responsible party

No information provided.

Cited responsible party

No information provided.

Cited responsible party

No information provided.
 
 

Keywords

Topic category
  • Inland waters
 
 

Resource Constraints

Classification
Unclassified 
Creative Commons Attribution 4.0 (CC-BY)
 
 

Lineage

Statement
Dataset Source: Vicmap Hydro (HY_WATER_AREA_POLYGON) Dataset Originality: Derived 
Description
Collection Method: Derived from source 
Description
Level of detail reduced to suit 1:250,000 - 1:5 million scale range. Redundant attributes removed, Scale Use Code attribute added and populated. Number of verticies reduced using an enhanced Douglas and Peucker simplification algorithm. 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Comments
Not Known 
 
Positional Accuracy
Comments
The source line work was generalised using an enhanced Douglas and Peucker simplification algorithm. The algorithm keeps so-called critical points that depict the essential shape of a line and removes all other points. The algorithm connects the end nodes of an arc with a "trend line". The distance of each vertex to the trend line is measured perpendicularly. Vertices closer to the line than the tolerance are eliminated. A 40m tolerance was used on this dataset 
 
Conceptual Consistency
Comments
Not Known 
 
Missing Data
Comments
Statewide coverage complete for Victoria 
 
Excess Data
 
 

Overviews

Graphic Overview of Data Footprint


Provided by

Share on social sites