Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Positive openness rasters for the Greater Raleigh Area, North Carolina

Metadata Updated: October 29, 2023

Rasters of positive openness and positive openness difference in the Greater Raleigh, NC Area based on 1-meter high-resolution lidar-derived digital elevation models (DEMs). This dataset contains positive openness rasters for 2013, 2015, and 2022 and one positive openness difference raster. The positive openness difference raster represents the difference in positive openness values between the years 2015 and 2022. The 2015 and 2022 positive openness rasters were selected for differencing because of the superior quality level (QL2) of base lidar data used to develop the positive openness rasters compared with the poorer quality level (QL3) of base lidar data used to develop the 2013 positive openness raster. Positive openness uses a line-of-sight approach to measure the surrounding sixteen zenith angles viewed above the landscape surface out to a specified distance. The raster cell value represents the average of all sixteen angles. A positive openness value of 90 degrees indicates a flat surface. Positive openness values less than 90 degrees indicate varying degrees of concavity; positive openness values greater than 90 degrees indicate varying degrees of convexity. Positive openness was calculated with the Relief Visualization Toolbox v 2.2.1 (https://www.zrc-sazu.si/en/rvt) with the search radius set to 18 meters (approximately 60 feet). All files are available as Cloud Optimized GeoTIFF, meaning they are formatted to work on the cloud or can be directly downloaded.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/5b902439e6e121ceaf964227ba8a727e
Identifier USGS:63501f75d34e47431c15c18e
Data Last Modified 20230411
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.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 b750ed40-acac-4365-974d-b8374b340a1c
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -78.8726,35.6924,-78.439,36.0404
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 83ce8b6f2696b39b483b339bb93359f170efe4cdfbdaf847709beb69704a8676
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -78.8726, 35.6924, -78.8726, 36.0404, -78.439, 36.0404, -78.439, 35.6924, -78.8726, 35.6924}

Didn't find what you're looking for? Suggest a dataset here.