{
index = dateIndexToInteger(index)
- #TODO: mardi similaire à lundi mercredi jeudi aussi ...etc
+ #TODO: mardi similaire à lundi mercredi jeudi aussi ...etc ==> "isSimilarDay()..."
if (!same_season)
{
#take all similar days in recent past
return ( rep(index,nb_days) - 7*seq_len(nb_days) )
}
-
- #TODO: use data... 12-12-1-2 CH, 3-4-9-10 EP et le reste NP
#Look for similar days in similar season
+ nb_days = min( (index-1) %/% 7, limit)
+ i = index - 7
days = c()
- i = index
+ month_ref = as.POSIXlt(data$getTime(index)[1])$mon + 1
while (i >= 1 && length(days) < limit)
{
- if (i < index)
- {
+ if (isSameSeason(as.POSIXlt(data$getTime(i)[1])$mon + 1, month_ref))
days = c(days, i)
- #look in the "future of the past"
- for (j in 1:4)
- days = c(days, i+7*j)
- }
- #...and in the "past of the past"
- for (j in 1:4)
- {
- if (i - 7*j >= 1)
- days = c(days, i-7*j)
- }
- # TODO: exact computation instead of -364
- # 364 = closest multiple of 7 to 365 - drift along the years... but not so many years so OK
- i = i - 364
-
-
+ i = i-7
}
+ return ( days )
+}
- return ( days[1:min(limit,length(days))] )
+#TODO: use data... 12-12-1-2 CH, 3-4-9-10 EP et le reste NP
+isSameSeason = function(month, month_ref)
+{
+ if (month_ref %in% c(11,12,1,2))
+ return (month %in% c(11,12,1,2))
+ if (month_ref %in% c(3,4,9,10))
+ return (month %in% c(3,4,9,10))
+ return (month %in% c(5,6,7,8))
}
+#TODO:
+#distinction lun-jeudi, puis ven, sam, dim
+#isSameDay = function(day, day_ref)
+#{
+# if (day_ref ==
+
#' getNoNA2
#'
#' Get indices in data of no-NA series followed by no-NA, within [first,last] range.