DC Trees
DC 2022 LiDAR was used and processed using the “Extract Trees using Cluster Analysis” script which is included as part of Esri’s 3D Basemap solution. All LiDAR-derived trees within 2 meters of a Urban Forestry Division tree were removed as being duplicates.Tree diameter (DBH, in inches) was estimated for the LiDAR-derived trees from calculated tree height (in feet) based on the equation: DBH = 0.4003*height - 1.9557. This equation was derived from a statistical analysis of a detailed park inventory tree data set and has an R^2 = 0.7418.Extreme outliers were also modified, with any DBH larger than 80 inches being converted to a DBH of 80 inches.The combined data set was processed using the USDA Forest Service i-Tree eco software, where structure and environmental benefits were estimated.
Resources
7 resources available
-
ArcGIS GeoService
ARCGIS GEOSERVICES REST API -
OGC WMS
OGC WMS -
CSV
CSV -
GeoJSON
GEOJSON -
KML
KML -
Shapefile
ZIP -
ArcGIS Hub Dataset
WEB PAGE
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{
"fn": "DCGISopendata",
"@type": "vcard:Contact",
"hasEmail": "mailto:gisgroup@dc.gov"
}
|
| description | <div style='text-align:Left;'><div><div><p><span>DC 2022 LiDAR was used and processed using the “Extract Trees using Cluster Analysis” script which is included as part of Esri’s 3D Basemap solution. All LiDAR-derived trees within 2 meters of a Urban Forestry Division tree were removed as being duplicates.</span></p><p><span>Tree diameter (DBH, in inches) was estimated for the LiDAR-derived trees from calculated tree height (in feet) based on the equation: DBH = 0.4003*height - 1.9557. This equation was derived from a statistical analysis of a detailed park inventory tree data set and has an R^2 = 0.7418.</span></p><p><span>Extreme outliers were also modified, with any DBH larger than 80 inches being converted to a DBH of 80 inches.</span></p><p><span>The combined data set was processed using the USDA Forest Service i-Tree eco software, where structure and environmental benefits were estimated.</span></p></div></div></div> |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "ArcGIS GeoService",
"format": "ArcGIS GeoServices REST API",
"accessURL": "https://maps2.dcgis.dc.gov/dcgis/rest/services/DCGIS_DATA/Urban_Tree_Canopy/MapServer/11",
"mediaType": "application/json"
},
{
"@type": "dcat:Distribution",
"title": "OGC WMS",
"format": "OGC WMS",
"accessURL": "https://maps2.dcgis.dc.gov/dcgis/services/DCGIS_DATA/Urban_Tree_Canopy/MapServer/WMSServer?request=GetCapabilities&service=WMS",
"mediaType": "application/vnd.ogc.wms_xml"
},
{
"@type": "dcat:Distribution",
"title": "CSV",
"format": "CSV",
"accessURL": "https://opendata.dc.gov/api/download/v1/items/08bda06465a74cd59a6d4231d882588d/csv?layers=11",
"mediaType": "text/csv"
},
{
"@type": "dcat:Distribution",
"title": "GeoJSON",
"format": "GeoJSON",
"accessURL": "https://opendata.dc.gov/api/download/v1/items/08bda06465a74cd59a6d4231d882588d/geojson?layers=11",
"mediaType": "application/vnd.geo+json"
},
{
"@type": "dcat:Distribution",
"title": "KML",
"format": "KML",
"accessURL": "https://opendata.dc.gov/api/download/v1/items/08bda06465a74cd59a6d4231d882588d/kml?layers=11",
"mediaType": "application/vnd.google-earth.kml+xml"
},
{
"@type": "dcat:Distribution",
"title": "Shapefile",
"format": "ZIP",
"accessURL": "https://opendata.dc.gov/api/download/v1/items/08bda06465a74cd59a6d4231d882588d/shapefile?layers=11",
"mediaType": "application/zip"
},
{
"@type": "dcat:Distribution",
"title": "ArcGIS Hub Dataset",
"format": "Web Page",
"accessURL": "https://opendata.dc.gov/datasets/DCGIS::dc-trees",
"mediaType": "text/html"
}
]
|
| identifier | https://www.arcgis.com/home/item.html?id=08bda06465a74cd59a6d4231d882588d&sublayer=11 |
| issued | 2024-03-04T19:42:03.000Z |
| keyword |
[
"DC trees",
"dc",
"environmental benefits",
"estimate trees",
"extracted trees",
"urban forestry",
"washington"
]
|
| landingPage | https://opendata.dc.gov/datasets/DCGIS::dc-trees |
| license | https://creativecommons.org/licenses/by/4.0 |
| modified | 2024-03-27T00:00:00.000Z |
| publisher |
{
"name": "City of Washington, DC"
}
|
| spatial | -77.1192,38.8032,-76.9095,38.9956 |
| theme |
[
"geospatial"
]
|
| title | DC Trees |
