Nothing
#' Return all variables in the segment `segment`
#'
#' @param segment [character] the segment as specified in `STUDY_SEGMENT`
#' @param meta_data [data.frame] the metadata
#' @param label_col [character] the metadata attribute used for naming the
#' variables
#'
#' @return vector of variable names
util_get_vars_in_segment <- function(segment, meta_data = "item_level",
label_col = LABEL) {
util_expect_scalar(segment, check_type = is.character)
util_expect_data_frame(meta_data, list(
STUDY_SEGMENT = is.character,
VAR_NAMES = is.character
))
if (!(LABEL %in% colnames(meta_data))) {
meta_data[[LABEL]] <- meta_data[[VAR_NAMES]]
}
def <- list(
STUDY_SEGMENT = is.character,
VAR_NAMES = is.character,
LABEL = is.character
)
def[[label_col]] <- is.character
util_expect_data_frame(meta_data, def)
kss <- meta_data[[STUDY_SEGMENT]]
# kss_lc <- prep_map_labels(kss,
# to = LABEL,
# meta_data = meta_data,
# ifnotfound = kss)
# kss_lb <- prep_map_labels(kss,
# to = label_col,
# meta_data = meta_data,
# ifnotfound = kss)
r <-
unique(c(
meta_data[kss == segment, label_col, drop = TRUE]#,
# meta_data[kss_lc == segment, label_col, drop = TRUE],
# meta_data[kss_lb == segment, label_col, drop = TRUE]
))
sort(r)
}
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