Earth Satellite Corporation (EarthSat), 19980612, onemap_prod.SDEADMIN.LC96: EarthSat, Raleigh, North Carolina.Online Links:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.001000
Ordinates (y-coordinates) are specified to the nearest 0.001000
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
Coordinates defining the features.
Sequential unique whole numbers that are automatically generated.
LC96.PAT Polygon Attribute Table ITEM NAME WIDTH OUTPUT TYPE N.DEC DESCRIPTION AREA 4 12 F 3 Total area in meters PERIMETER 4 12 F 3 Total area in meters COV# 4 5 B - Polygon internal id number COV-ID 4 5 B - Polygon user id number TH_CLASS# 2 2 I - Thematic class number LC_CLASS# 4 4 I - Landcover class number DESCRIPTION 40 40 C - Landcover description
NCCGIA Director, Karen Siderelis Database Administrator, Zsolt Nagy NC Center for Geographic Information and Analysis 301 N. Wilmington St., Suite 700 Raleigh, North Carolina 27601-2825
EarthSat Vice President of Environmental and GIS Services, Dr. Greg T. Koeln Project Manager, Todd C. Patterson Assistant Project Manager, Todd F. Helt Earth Satellite Corporation (EarthSat) 6011 Executive Boulevard, Suite 400 Rockville, Maryland 20852
919-733-2090 (voice)
919-715-0725 (FAX)
dataq@ncmail.net
These data were created to assist governmental agencies and others in making resource management decisions through the use of a geographic information system (GIS).
Earth Satellite Corporation (EarthSat), 199703, Comprehensive Land Cover Mapping for the State of North Carolina: EarthSat, Rockville, Maryland.
Mapper, EOSAT/Landsat Thematic (TM), 1996, Landsat Thematic Mapper (TM) data: EOSAT, Lanham, Maryland.
Earth Satellite Corporation (EarthSat), 199607, Comprehensive Land Cover Mapping for the State of North Carolina Field Data Points: EarthSat, Rockville, Maryland.
Resources, Pacific Meridian , 1995, Southern Appalachian Assessment classification: Pacific Meridian Resources, Portland, Oregon.
University of North Carolina at Greensboro, 1995, Field data collection: NCCGIA, Raleigh, NC.
Program, Natural Heritage , 1996, Ancillary data collection: EarthSat, Rockville, Maryland.
Division of Parks and Recreation, 1996, Ancillary and field data collection: EarthSat, Rockville, Maryland.
Southeastern Forest Experiment Station, unknown, The Eastwide Forest Inventory Database: Southeastern Forest Experiment Station, Asheville, North Carolina.
U.S. Fish and Wildlife Service, 19951204, NWI Digital Data, Complete Set: U.S. Fish and Wildlife Service, Washington, D.C..
Dismal Swamp National Wildlife Refuge, 1989, SPOT classification: U.S. Fish and Wildlife Service, Suffolk, Virginia.
XVIII Airborne Corps and Fort B, Engineering Systems Division, unknown, Digital and analog forest inventory data: XVIII Airborne Corps and Fort Bragg Directorate of Public Works and Environment, Engineering Systems Division, Fayetteville, North Carolina.
U.S. Geological Survey, unknown, USGS 7.5' Topographic Quadrangle Maps: U.S. Geological Survey, Reston, Virginia.
Transportation, Department of , unknown, Aerial photograph interpretation: Department of Transportation, Raleigh, North Carolina.
Survey, US Geological , 1986, USGS 30'x60' series quadrangles: US Geological Survey, Reston, Virginia.
Person who carried out this activity:
(301) 231-0660 (voice)
(301) 231-5020 (FAX)
userid@earthsat.com
Data sources produced in this process:
Person who carried out this activity:
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@ncmail.net
Data sources used in this process:
Data sources used in this process:
Raster pixels were assigned information (land cover) classes by
undergoing an unsupervised classification in Erdas Imagine 8.2. The
resultant single-band image signature file was exported and formatted to
use with Arc/INFO Grid's dendrogram function. A summary function in
Erdas Imagine 8.2 corresponded land cover class with pixel value at which
the land cover data point was located. The land cover class was recorded
on the dendrogram until all data points were assigned a spectral class.
Information class was assigned to spectral class by majority of points
within the spectral class and/or by spectral similarity. Full process
description can be found in EarthSat's final report to NCCGIA,
"Comprehensive Land Cover Mapping for the State of North Carolina:
Final Report," March 1997.
After processing each scene was raster edited to alleviate errors and
provide for a consistent land cover surface. After an initial accuracy
appraisal the scene was filtered to reach the minimum mapping unit
(MMU) of 6 pixels for water and 12 pixels for other land cover types.
Analysis of inter- and intra-scene co-registration suggested all scenes were accurate to within one pixel (28.5 meters).
N/A
These data represent areas within a 1-kilometer buffer of the state's borders, showing human uses of the land, vegetation, water, natural surface, and construction.
Using ESRI's Arc/INFO and ArcView software, and Trimble Navigation's Direct GPS for ArcView and PathFinder 3.0, data points were attributed with land cover class and rasterized for use in the classification procedure. Pseudo-color single- band images (4,5,3 RGB) were created in an unsupervised classification and information classes assigned based on majority of field data points within the spectral class and/or euclidian relationship of the means of each spectral class.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- Acknowledgment of products derived from this data set should cite the following: The source of the Land Cover - TM data is the North Carolina Corporate Geographic Database. Earlier versions of these data may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA (and its cooperators and contractor EarthSat) cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfer.
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@ncmail.net
Statewide Land Cover - 1996
NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government.
FOR DIGITAL OR NON-DIGITAL DATA, Contact NC CGIA, Data Distribution to order data, Phone 919.733.2090 ... Email dataq@ncmail.net ... Web Page order form <http://www.cgia.state.nc.us/cgdb/index.html>
For current FORMAT/MEDIA INFORMATION, use a web browser: <http://cgia.cgia.state.nc.us/cost.html> or phone NC CGIA Data Distribution 919.733.2090
Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis.
All formats supplied are created using ARC/INFO GIS software on Unix workstations. Other formats are available. Format compatibility is the user's responsibility. For more information on formats and media, use a web browser: FORMAT/MEDIA INFORMATION - <http://cgia.cgia.state.nc.us/cost.html>
(919) 733-2090 (voice)
(919) 715-0725 (FAX)
dataq@ncmail.net