View In:   ArcGIS Online Map Viewer

Parent Layer: December 20

Name: Tree Canopies

Display Field: CRTR_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This dataset represents the extent of the City of Cape Town’s Tree Canopy. This dataset was generated in order to provide the Recreation and Parks with a better understating of the extent of; and to aid its management decision making in relation to this green infrastructure.A near infra-red (NIR) imagery dataset was acquired simultaneously with the 2018 aerial imagery. The NIR dataset was then combined into the colour infra-red (CIR) composite where plant health shows up as red. A height mask of ground height to 2.75m and above was then used to remove undesirable features such as lawns and bushes using LiDAR and an auto-correlated DSM. Feature extraction using sample selections were then applied to the CIR to select all vegetation over 2.75m above ground. Input data was packaged into a 5 x 5km grid, comprising of 147 blocks across the City.Data then underwent manual GIS cleaning and quality control based on the 2018 aerial imagery, to remove anomalies from the dataset and to conduct edge-matching along the grid boundaries.

Copyright Text: Recreation and Parks Department, Planning, Development & Project Management Office (PDPMO), Geospatial Services Department, Community Services & Health, City of Cape Town

Default Visibility: true

MaxRecordCount: 250000

Supported Query Formats: JSON, geoJSON

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Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Extent:

XMin: 2037741.1778855568
YMin: -4076918.032102974
XMax: 2115401.678630424
YMax: -3958353.717781577
Spatial Reference: 102100  (3857)

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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

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• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )

Templates:

• Name: Tree Canopies
  Description:
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Capabilities: Query,Extract

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Supported Operations:   Query   Query Attachments   Calculate   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata