#' Prepare exhibition places data frame for analysis
#'
#' @param .df.list a dataset as exported by \code{\link{loaddata}}
#'
#' @return a data frame containing the exhibition places
#' @export
#'
#' @examples
#' exhplaces <- tidy_exhplaces(df.list)
tidy_exhplaces <- function(.df.list, .exhibitions){
# get date of exhibitions per exhibition place
first_last_exh <- .exhibitions %>%
group_by(exh_place_id) %>%
summarise(first_exh_yr = min(exh_start_Y),
last_exh_yr = max(exh_start_Y))
# get number of exhibitions for each exhibition place
number_of_exhibitions <- exhibitions %>%
group_by(exh_place_id) %>%
summarise(num_of_exh = n_distinct(id))
# get geocodes
geocodes_exhplaces <- df.list[["geocodes_exhplaces"]] %>%
select(id, country, countrycode, continent, lon, lat, loctype, address)
exhplaces <- df.list[["exhplaces"]] %>%
# exclude irrelevant data gathered from website
select(- contains("top"),
- contains("_linked"),
- contains("_num"),
- type,
- begin_records,
- end_records) %>%
mutate(id = as.integer(id),
type_exhplace = type_exhplace %>% str_replace("Non-Profit", "NonProfit")) %>%
# join general information from available data
left_join(first_last_exh, by = c("id" = "exh_place_id")) %>%
left_join(number_of_exhibitions, by = c("id" = "exh_place_id")) %>%
left_join(geocodes_exhplaces, by = "id")
return(exhplaces)
}
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