reorganize folder

[talweg.git] / R / utils.R

diff --git a/R/utils.R b/R/utils.R
deleted file mode 100644 (file)
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))] )
-}