system filename: tiles/<quad abbreviation>/lc96 filesizes (in bytes):
59933 ashe/lc96 4427 flor/lc96 5903 myrt/lc96 19357 bayb/lc96 44589 font/lc96 6173 norf/lc96 51277 boon/lc96 5481 gala/lc96 33421 nriv/lc96 580 capf/lc96 33501 gast/lc96 31645 plym/lc96 1215 caph/lc96 45901 gree/lc96 73997 rale/lc96 45541 chap/lc96 71965 hens/lc96 57597 roan/lc96 66053 char/lc96 42309 henv/lc96 53381 rock/lc96 15157 clev/lc96 60741 hick/lc96 34165 sali/lc96 4639 curr/lc96 7573 john/lc96 7093 sbos/lc96 1306 dalt/lc96 45829 kins/lc96 56421 spin/lc96 5251 danv/lc96 15829 knox/lc96 1480 tocc/lc96 32861 elic/lc96 27837 lanc/lc96 894 virg/lc96 43853 elit/lc96 34557 laur/lc96 34237 whit/lc96 7093 empo/lc96 8277 mant/lc96 11469 wilm/lc96 52509 faye/lc96 12045 more/lc96 40709 wins/lc96 6885 wyth/lc96Revisions and updates to this layer include: 1.) Revision date: June 12, 1998 - Removal of a pixel-wide sliver of no data between the Laurinburg and Elizabethtown 100k sheets. The error first occurred during the clipping process of the statewide landcover arc/info grid with the two 100k neatline boundaries. The problem was rectified by clipping the adjoining two 100k's as one grid, vectorizing that grid, and then clipping by each 100k neatline.
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
Individual classified scenes were filtered and mosaicked using Erdas Imagine 8.2. Full 12-band (combined leaf-off and leaf-on) scenes were used for the entire state; where clouds obstructed classification only leaf-off 6-band images were used. filesize: 412.6MB
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.
A change order was delivered to EarthSat in April 1996 to accelerate classification for the Neuse-Tar/Pamlico watershed. This dataset was incorporated into the final statewide land cover but because of enhancement to processing techniques and correction of some errors a separate, enhanced statewide database was also provided (that did not have the earlier provided Neuse- Tar/Pamlico watershed land cover classification database).
Each scene underwent accuracy appraisal before being accepted for use in the final statewide database. Once accepted, scenes were filtered to reach the minimum mapping unit (MMU) of 6 pixels for water and 12 pixels for all other classes. Imagine clump and eliminate routines were used to reduce insignificant data and filter information class assignment.
A hierarchy of scenes was determined based on obstructed areas, scene dates, and classification results. Additional raster editing was performed to enhance data quality and interactively correct any remaining inconsistencies or spectrally confused areas. The municipal vector was rasterized and mosaicked with the final scenes and recoded to land cover class 10 (thematic class 24).
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