X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=R%2Futils.R;fp=R%2Futils.R;h=0000000000000000000000000000000000000000;hb=469529710f56c790ae932b45d13fed2e34bcabf2;hp=3777f2d8a51d57b0246849ec352434a758589731;hpb=4c59ec9aefef8ea5464723a293b3aa39ee02dc60;p=talweg.git

diff --git a/R/utils.R b/R/utils.R
deleted file mode 100644
index 3777f2d..0000000
--- a/R/utils.R
+++ /dev/null
@@ -1,97 +0,0 @@
-#' @title dateIndexToInteger
-#'
-#' @description Transform a (potential) date index into an integer (relative to data)
-#'
-#' @param index Date (or integer) index
-#' @param data Object of class \code{Data}
-#'
-#' @export
-dateIndexToInteger = function(index, data)
-{
-	index = index[1]
-	if (is.numeric(index))
-		index = as.integer(index)
-	if (is.integer(index))
-		return (index)
-	if (inherits(index, "Date") || is.character(index))
-	{
-		tryCatch(dt <- as.POSIXct(index), error=function(e) stop("Unrecognized index format"))
-		#TODO: tz arg to difftime ?
-		integerIndex <- round( (as.numeric( difftime(dt, data$getTime(1)) ))[1] ) + 1
-		if (integerIndex > 0 && integerIndex <= data$getSize())
-		{
-			#WARNING: if series start at date >0h, result must be shifted
-			date1 = as.POSIXlt(data$getTime(1)[1])
-			date2 = as.POSIXlt(data$getTime(2)[1])
-			shift = (date1$year==date2$year && date1$mon==date2$mon && date1$mday==date2$mday)
-			return (integerIndex + ifelse(shift,1,0))
-		}
-		stop("Date outside data range")
-	}
-	stop("Unrecognized index format")
-}
-
-#' @title integerIndexToDate
-#'
-#' @description Transform an integer index to date index (relative to data)
-#'
-#' @param index Date (or integer) index
-#' @param data Object of class \code{Data}
-#'
-#' @export
-integerIndexToDate = function(index, data)
-{
-	index = index[1]
-	if (is.numeric(index))
-		index = as.integer(index)
-	if (!is.integer(index))
-		stop("'index' should be an integer")
-	as.Date( data$getTime(index)[1] )
-}
-
-#' @title getSimilarDaysIndices
-#'
-#' @description Find similar days indices in the past
-#'
-#' @param index Day index (numeric or date)
-#' @param limit Maximum number of indices to return
-#' @param same_seaon Should the indices correspond to day in same season?
-#'
-#' @export
-getSimilarDaysIndices = function(index, limit, same_season)
-{
-	index = dateIndexToInteger(index)
-
-	#TODO: mardi similaire à lundi mercredi jeudi aussi ...etc
-	if (!same_season)
-	{
-		#take all similar days in recent past
-		nb_days = min( (index-1) %/% 7, limit)
-		return ( rep(index,nb_days) - 7*seq_len(nb_days) )
-	}
-
-	#Look for similar days in similar season (+/- 30 days)
-	days = c()
-	i = index
-	while (i >= 1 && length(days) < limit)
-	{
-		if (i < index)
-		{
-			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
-	}
-
-	return ( days[1:min(limit,length(days))] )
-}