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#' Identify Fossils with equal min and max age
#'
#' Removes or flags records with equal minimum and maximum age.
#'
#' @inheritParams cf_age
#'
#' @inherit cc_cap return
#'
#' @note See \url{https://ropensci.github.io/CoordinateCleaner/} for more
#' details and tutorials.
#'
#' @keywords Temporal cleaning Fossils
#' @family fossils
#'
#' @examples
#'
#' minages <- runif(n = 10, min = 0.1, max = 25)
#' x <- data.frame(species = letters[1:10],
#' min_ma = minages,
#' max_ma = minages + runif(n = 10, min = 0, max = 10))
#' x <- rbind(x, data.frame(species = "z",
#' min_ma = 5,
#' max_ma = 5))
#'
#' cf_equal(x, value = "flagged")
#'
#' @export
cf_equal <- function(x, min_age = "min_ma",
max_age = "max_ma",
value = "clean",
verbose = TRUE) {
match.arg(value, choices = c("clean", "flagged"))
if (verbose) {
message("Testing age validity")
}
# min_age == max_age
t1 <- x[[max_age]] == x[[min_age]]
# min_age > max_age
t2 <- x[[min_age]] > x[[max_age]]
flags <- t1 | t2
# create output
out <- rep(TRUE, nrow(x))
out[flags] <- FALSE
if (verbose) {
if(value == "clean"){
message(sprintf("Removed %s records.", sum(!out, na.rm = TRUE)))
}else{
message(sprintf("Flagged %s records.", sum(!out, na.rm = TRUE)))
}
}
# value
switch(value, clean = return(x[out, ]), flagged = return(out))
}
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