dsdata: Distance sampling workshop data

#' Simulated point transect survey data
#'
#' Simulated point transect survey. Thirty point transects, detection function is half-normal. 
#' True object density is 79.6 animals per hectare.
#'
#' @name PTExercise
#' @aliases PTExercise_units
#' @docType data
#' @format A data frame with 144 rows and 7 variables
#'   \tabular{ll}{
#'     \code{Region.Label} \tab strata names (single stratum) \cr
#'     \code{Area} \tab size of study area (0 in this case) \cr
#'     \code{Sample.Label} \tab transect ID \cr
#'     \code{Effort} \tab number of visits to point \cr
#'     \code{object} \tab object ID  \cr
#'     \code{distance} \tab radial distance (m) \cr
#'     \code{Study.Area} \tab name of study area \cr
#'   }
#' @source Simulated data, from the distance sampling introductory course, Centre for
#'  Research into Ecological & Environmental Modelling, University of St Andrews.
#' @keywords datasets
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