LuceForgrp {nnDiag} | R Documentation |
This data was extracted from the freely available Forest Inventory and Analysis National Program of the USDA Forest Service Database. The coordinates of each subplot are not exact, they have been fuzzed and swapped to meet privacy requirements established by Congress. See pages 10 - 12 in The Forest Inventory and Analysis Database: Database Description and Users Manual Version 4.0 for Phase 2, Revision for more information on the fuzzing and swapping of plot coordinates.
data(LuceForgrp)
A data frame containing 734 rows the following 4 columns:
plt_cn
subp
ref.forgrp
pred.forgrp
USDA Forest Service Forest Inventory and Analysis National Program http://fiatools.fs.fed.us/fiadb-downloads/datamart.html
Bechtold, W.A. and Patterson, P.L. (2005) The Enhanced Forest Inventory and Analysis Program - National Sampling Design and Estimation Procedures.
Forest Inventory and Analysis Program (2009) The Forest Inventory and Analysis Database: Database Description and Users Manual Version 4.0 for Phase 2, Revision 1. http://fia.fs.fed.us/library/database-documentation/draft FIADB_user guide_v4-0_p2_05_27_09_pdf.pdf.