TODO: unit tests for simil days

[talweg.git] / pkg / R / J_Persistence.R

diff --git a/pkg/R/J_Persistence.R b/pkg/R/J_Persistence.R
index 5d156cc..9e56742 100644 (file)
--- a/pkg/R/J_Persistence.R
+++ b/pkg/R/J_Persistence.R
@@ -1,8 +1,15 @@
-#' Obtain jump forecast by the Persistence method
+#' getPersistenceJumpPredict
+#'
+#' Analog of the PersistenceForecaster: predict the jump after last observed value either
+#' by re-applying the last jump between similar day and its follower (if argument
+#' "same_day" is TRUE), or by re-using the very last observed jump (when "same_day" =
+#' FALSE).
 #'
 #' @inheritParams computeForecast
 #' @inheritParams getZeroJumpPredict
 #'
+#' @aliases J_Persistence
+#'
 getPersistenceJumpPredict = function(data, today, memory, horizon, params, ...)
 {
        #return gap between end of similar day curve and first day of tomorrow (in the past)
@@ -13,7 +20,7 @@ getPersistenceJumpPredict = function(data, today, memory, horizon, params, ...)
        {
                {
                        last_serie_end = tail( data$getSerie(index), 1)
-                       last_tomorrow_begin = data$getSerie(index+1)[1]
+                       last_tomorrow_begin = head( data$getSerie(index+1), 1)
                        index = index - ifelse(same_day,7,1)
                };
                if (!is.na(last_serie_end) && !is.na(last_tomorrow_begin))