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#' Frequency of specifics events in a variable of Actions
#'
#' This is a function that locates specific events (using the
#' \code{actions.search} argument) and create new variables associate with this
#' strategy.
#'
#' @param data A \code{matrix} or \code{data.frame} where the 'action.var'
#' variable is
#' @param action.var a vector with actions. See \code{DataActionsbyID} function.
#' @param actions.search A character vector with the actions to be searched.
#'
#' @return This function returns a \code{data.frame} with the frequency of each
#' specific events from the \code{actions.search} argument and
#' "Freq.Actions.Search" summary.
#'
#' @examples
#' # Counting the instances of top_setting == 1
#' df <- m2$VarActionSearch(cp025q01.treated, "CP025Q01.ACTIONS", "1_apply")
#' table(df$freq.1_apply) # checking results
#'
VarActionSearch <- function(data, action.var, actions.search) {
for (i in seq(length(actions.search))) {
if (i == 1) {
data.actionSearch <- stringr::str_count(
data[[action.var]],
actions.search[i]
)
} else {
data.actionSearch <- cbind(
data.actionSearch,
stringr::str_count(
data[[action.var]],
actions.search[i]
)
)
}
}
data.actionSearch <- as.data.frame(data.actionSearch)
names(data.actionSearch) <- paste0("freq.", actions.search)
data <- cbind(as.matrix.data.frame(data), data.actionSearch)
return(data)
}
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