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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Seattle Tree Centroids 2021

    Metadata Updated: February 28, 2025

    This dataset represents tree centroids derived from LiDAR data. The tree centroids are the estimated location of the central point of each tree. The tree centroids were derived using LiDAR data. The operation was constrained to those areas of tree canopy, using the tree canopy dataset developed separately for this project, which employed automated techniques coupled with manual editing to extract tree canopy from imagery and LiDAR. Mapping of tree centroids was performed using an automated feature extraction technique that incorporated segmentation and morphology routines. The automated routine first created objects from the tree canopy using an inverse watershed segmentation algorithm applied to the LiDAR nDSM (normalized digital surface model) datasets. These objects were then refined using the spatial properties of the objects. Centroids were computed by finding the geometric center of the tree object. Attributes include the tree height and radius. The height was calculated using the 98th quantile of the LiDAR nDSM height to reduce outlier values. The radius was then calculated from the tree centroid using the formula.For more information, please see the 2021 Tree Canopy Assessment.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date July 8, 2023
    Metadata Updated Date February 28, 2025

    Metadata Source

    Harvested from Seattle JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 8, 2023
    Metadata Updated Date February 28, 2025
    Publisher Jarlath O'Neil-Dunne, University of Vermont Spatial Analysis Lab, Director
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=c9db8b006307438198422c7bc5ae3f24&sublayer=0
    Data First Published 2023-05-24
    Data Last Modified 2023-05-24
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://cos-data.seattle.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 72d159cc-c98d-491a-88d2-887e05fc45db
    Harvest Source Id f61de7a2-69cf-40a9-a1bc-dd9edb8f3fe5
    Harvest Source Title Seattle JSON
    Homepage URL https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::seattle-tree-centroids-2021
    Metadata Type geospatial
    Old Spatial -122.4297,47.4934,-122.2427,47.7358
    Source Datajson Identifier True
    Source Hash 6d66f4439a96033accc6d0057bacb66681c0ef2c7c5f4ef95baf71c340cfa228
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -122.4297, 47.4934, -122.4297, 47.7358, -122.2427, 47.7358, -122.2427, 47.4934, -122.4297, 47.4934}

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