R/NLA_2007.R

In mhweber/spsurvey: Spatial Survey Design and Analysis

#' Western Mountains Ecoregion Lakes 
#'
#' A dataset containing attributes for Western Mountains Ecoregion lakes
#' sampled by the U.S. Environmental Protection Agency (EPA) during the National
#' Lakes Assessment (NLA) survey for 2007.
#'
#' @docType data
#'
#' @name NLA_2007
#'
#' @usage NLA_2007
#'
#' @format A data frame with 236 rows and 15 attributes:
#' \describe{
#'   \item{siteID}{site ID value.}
#'   \item{xcoord}{Albers projection x-coordinate.}
#'   \item{ycoord}{Albers projection y-coordinate.}
#'   \item{wgt}{survey design weight.}
#'   \item{Lake_Origin}{lake origin category.}
#'   \item{Chla}{chlorophyll-a concentration.}
#'   \item{OE5}{value of the index of macroinvertebrate taxa loss.}
#'   \item{PTL}{total phosphorus concentration.}
#'   \item{NTL}{total nitrogen concentration.}
#'   \item{Turbidity}{turbidity value.}
#'   \item{Chla_cond}{condition class category ("Good", "Fair", or "Poor") of
#'     the chlorophyll-a value.}
#'   \item{OE5_cond}{condition class category of the macroinvertebrate taxa loss
#'     index.}
#'   \item{PTL_cond}{condition class category of the total phosphorus value.}
#'   \item{NTL_cond}{condition class category of the total nitrogen value.}
#'   \item{Turbidity_cond}{condition class category of the turbidity value.}
#' }
NULL