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#' is_column_a_metric
#' Checks if column_name indicates numeric values
#' Uses https://developers.piwik.pro/en/latest/custom_reports/columns.html
#'
#' @param column_name string
#'
#' @return boolean
is_column_a_metric <- function(column_name) {
# remove trailing _number
column_name <- stringr::str_remove(column_name, "_[0-9]")
# remove traing __.* for appending transformations
column_name <- stringr::str_remove(column_name, "__.*")
# Metrics as of
# https://developers.piwik.pro/en/latest/custom_reports/columns.html
metrics <- tibble::tribble(
~Metric.Name, ~Column.ID, ~Scope, ~Type,
"Events", "events", "session", "int",
"Page views", "page_views", "session", "int",
"Unique page views", "unique_page_views", "session", "int",
"Entries", "entries", "session", "int",
"Exits", "exits", "session", "int",
"Bounces", "bounces", "session", "int",
"Sessions", "sessions", "session", "int",
"Visitors", "visitors", "session", "int",
"% of returning visitors", "returning_visitors_rate", "session", "float",
"Users", "users", "session", "int",
"Visitor IPs", "visitor_ips", "session", "int",
"Outlinks", "outlinks", "session", "int",
"Unique outlinks", "unique_outlinks", "session", "int",
"Downloads", "downloads", "session", "int",
"Unique downloads", "unique_downloads", "session", "int",
"Searches", "searches", "session", "int",
"Unique searches", "unique_searches", "session", "int",
"Custom events", "custom_events", "session", "int",
"Unique custom events", "unique_custom_events", "session", "int",
"Content impressions", "content_impressions", "session", "int",
"Unique content impressions", "unique_content_impressions", "session", "int",
"Content interactions", "content_interactions", "session", "int",
"Unique content interactions", "unique_content_interactions", "session", "int",
"Goal conversions", "goal_conversions", "session", "int",
"Unique goal conversions", "unique_goal_conversions", "session", "int",
"Ecommerce conversions", "ecommerce_conversions", "session", "int",
"Ecommerce abandoned carts", "ecommerce_abandoned_carts", "session", "int",
"Unique purchases", "unique_purchases", "event", "int",
"Entry rate", "entry_rate", "session", "float",
"Exit rate", "exit_rate", "session", "float",
"Exit rate events", "exit_rate_events", "session", "float",
"Bounce rate", "bounce_rate", "session", "float",
"Bounce rate", "bounce_rate_events", "session", "float",
"Content interaction rate", "content_interaction_rate", "session", "float",
"Goal conversion rate", "goal_conversion_rate", "session", "float",
"Ecommerce conversion rate", "ecommerce_conversion_rate", "session", "float",
"Events per session", "events_per_session", "session", "float"
)
(column_name %in% metrics$Column.ID) | (is_dimension_numeric(column_name))
}
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