#' Frequencies of butterflies
#'
#' A dataset containing a frequency count table of butterflies in
#' British Malaya in the 1940's
#'
#' @format A data frame with 25 rows and 2 variables:
#' \describe{
#' \item{index}{An index variable j}
#' \item{frequency}{The number of butterflies observed j times}
#' ...
#' }
#' @source Fisher, R.A., Corbet A.S., & Williams, C.B..
#' "The relation between the number of species and
#' the number of individuals in a random sample of an animal population."
#' The Journal of Animal Ecology (1943): 42-58.
"butterfly"
#' The CatchAll output of butterfly
#'
#' The estimated species richness of butterflies
#'
#' @format A data frame with 248 rows rows and 20 variables:
#'
#' @source Fisher, R.A., Corbet A.S., & Williams, C.B..
#' "The relation between the number of species and
#' the number of individuals in a random sample of an animal population."
#' The Journal of Animal Ecology (1943): 42-58.
#' @source Bunge, John, et al. "Estimating population diversity with
#' CatchAll." Bioinformatics 28.7 (2012): 1045-1047.
"butterfly_catchall"
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