Vegetated Islands Polygons - 100 Islands Research

WorldView-2 imagery was used to classify vegetated land, barren shoreline, and water. The classification was then cleaned and converted to polygons. The interior island polygons were dissolved to remove any holes in islands. The final polygons represent Island interiors (mostly vegetated) and shoreline in the 100 Islands research area. Not all 100 islands study islands are shown in this dataset, since the imagery did not completely cover all islands.

The "Class" field denotes whether the polygon is Land (meaning vegetated inland), or Shore.

The imagery were collected on the following dates: May 8 2011, May 11 2014, Aug 13 2014, and June 4 2015. The imagery were atmospherically corrected with the ATCOR algorithm. The imagery was classified with an unsupervised ISO cluster classification, which was collapsed into water and land classes. The vegetated land area was classified with a 5x5 median filtered NDVI image threshold, which varied by scene. The raster classification was converted to polygons, and interior polygons were removed with a union analysis.

Access and Use

Licence: Creative Commons Attribution 4.0
Limitations: Appropriate credit must be given to Hakai Institute and the authors of the dataset.

Data and Resources

Citation

Keywords

Dataset extent

Map data © OpenStreetMap contributors

Metadata Reference Date(s) September 23, 2021 (Publication)
September 23, 2021 (Revision)
Dataset Reference Date(s) January 21, 2016 (Publication)
Frequency of Update As Needed

Responsible Party 1
Affiliation
Hakai Institute
Email
data@hakai.org
Role
  • Distributor
  • Owner
  • Resource Provider
Responsible Party 2
Name
Hakai Geospatial Technology Team
Affiliation
Hakai Institute
Email
data@hakai.org
Role
  • Custodian
  • Point of Contact
Responsible Party 3
Name
Luba Reshitnyk
Affiliation
Hakai Institute
Role
Point of Contact

Field Value
Ocean Variables Other
Scope Dataset
Status On Going
Topic Category oceans
Maintenance Note Generated from https://cioos-siooc.github.io/metadata-entry-form
Spatial Extent { "coordinates": [ [ [ -128.6993408203125, 51.368351060511344 ], [ -127.4908447265625, 51.368351060511344 ], [ -127.4908447265625, 52.197506856993925 ], [ -128.6993408203125, 52.197506856993925 ], [ -128.6993408203125, 51.368351060511344 ] ] ], "type": "Polygon" }
North Bounding Latitude 52.197506856993925
South Bounding Latitude 51.368351060511344
East Bounding Longitude -127.4908447265625
West Bounding Longitude -128.6993408203125
Vertical Extent
Min
0.0
Max
500.0
Default Locale English