데이터셋 상세
호주
Vicmap Vegetation - Tree Density Polygon
The Vicmap Vegetation Tree Extent dataset was generalised to 2m pixels and then clustering rules were applied to group the data into three density classes (Dense, Medium, Sparse). This classification was a pixel by pixel assessment where a pixel was allocated a density classification based on neighbouring pixels. The raster dataset was then converted to vector. The process of grouping tree cover into density classes simplifies the representation of trees and reduces the complexity of the vector dataset. It is a effective way of representing tree cover. The original raw 20cm raster dataset is maintained as a separate dataset, Vicmap Vegetation Tree Extent.
연관 데이터
Vicmap Lite - Forest Polygon - 1:250,000 to 1:1,000,000
공공데이터포털
This layer is part of Vicmap Lite and contains polygon features delineating forested areas. This Vicmap Lite dataset is suited for use between scales of 1: 250,000 million and 1 : 1 million. The polygons were sourced from TREE100. The level of attribute information, the number of features and the number of vertices has been simplified to suit the 1: 250,000 - 1 : 2 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 AUGUST 2008
Vicmap Vegetation
공공데이터포털
This dataset contains vegetation features represented by polygons. It is part of the Vicmap suite of products. Includes tree density levels. Datasets in the series are listed below. See their metadata entries for more detailed metadata. Tree Density - Vicmap Vegetation (TREE_DENSITY)
Vicmap Lite - Forest Polygon - 1:2,000,000 to 1:5,000,000
공공데이터포털
This layer is part of Vicmap Lite and contains polygon features delineating forested areas. This Vicmap Lite dataset is suited for use between scales of 1: 2 million and 1 : 5 million. The polygons were sourced from TREE100. The level of attribute information, the number of features and the number of vertices has been simplified to suit the 1: 2 million - 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 AUGUST 2008
Vicmap Lite - Forest Polygon - 1:1,000,000 to 1:2,000,000
공공데이터포털
This layer is part of Vicmap Lite and contains polygon features delineating forested areas. This Vicmap Lite dataset is suited for use between scales of 1: 1 million and 1 : 2 million. The polygons were sourced from TREE100. The level of attribute information, the number of features and the number of vertices has been simplified to suit the 1: 1 million - 1 : 2 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 AUGUST 2008 THIS DATASET WAS LAST UPDATED IN AUGUST 2008
Vicmap Lite - Forest Polygon
공공데이터포털
This layer is part of Vicmap Lite and contains polygon features delineating forested areas. The polygons were sourced from TREE100. This version of the vmlite_forest dataset was created by merging the previous layers vmlite_forest_su2, vmlite_forest_su3 and vmlite_forest_su5. The concept of a Scale Use Code has been introduced to help control the level of detail displayed. Attribute scale_use_code values of 1 are suitable for display 1:1 million - 1 : 5 million scale range. Attribute scale_use_code values of 3&4 are suitable for display 1: 250,000 - 1 : 2 million scale range. The level of attribute information, the number of features and the number of vertices has been simplified to suit the 1: 250,000 - 1 : 2 million scale range.
Tree Cover
공공데이터포털
Polygons showing tree cover as defined by woody vegetation greater than 2 metres in height and with a crown cover (foliar density) greater than 10%. Tree cover is mapped down to a minimum area of one hectare. This layer was derived from LANDSAT TM digital data.
Vicmap Vegetation - Tree Urban Point
공공데이터포털
The Vicmap Vegetation Tree Urban represents trees as points across Metropolitan Melbourne and the urban environment within four regional councils: Wangaratta, Sale, Shepparton and Ballarat. This product is derived from machine learning of high resolution aerial photography with no post processing human intervention.
Tree Cover Change in Victoria Between 1990 and 1993
공공데이터포털
This layer contains polygons showing tree cover change as defined by woody vegetation greater than 2 metres in height and with a crown cover (foliar density) greater than 10 percent. Tree cover is mapped down to a minimum area of one hectare. Attributes outlining the causes of tree cover change are assigned for areas greater than 1 hectare. This layer was derived from LANDSAT TM digital data.
Tree Cover modified for display at scales up to 1:150,000 in web mapping applications.
공공데이터포털
This dataset is a modified version of TREE100 which has been intersected with the 25 thou mapsheet index to break up the larger polygons.