#' dateIndexToInteger
#'
-#' Transform a (potential) date index into an integer (relative to data)
+#' Transform a (potential) date index into an integer (relative to data beginning).
#'
#' @param index Date (or integer) index
-#' @param data Object of class \code{Data}
+#' @param data Object of class Data, output of \code{getData()}
#'
#' @export
dateIndexToInteger = function(index, data)
{
- #works on integers too: trust input
+ # Works on integers too: trust input
if (is.numeric(index))
index = as.integer(index)
if (is.integer(index))
#' integerIndexToDate
#'
-#' Transform an integer index to date index (relative to data)
+#' Transform an integer index (relative to data beginning) into a date index.
#'
-#' @param index Date (or integer) index
-#' @param data Object of class \code{Data}
+#' @inheritParams dateIndexToInteger
#'
#' @export
integerIndexToDate = function(index, data)
{
- #works on dates too: trust input
+ # Works on dates too: trust input
if (is.character(index))
index = as.Date(index)
if (is(index,"Date"))
#' getSimilarDaysIndices
#'
-#' Find similar days indices in the past.
+#' Find similar days indices in the past; at least same type of day in the week:
+#' monday=tuesday=wednesday=thursday != friday != saturday != sunday.
#'
#' @param index Day index (numeric or date)
#' @param data Reference dataset, object output of \code{getData}
#' @param days_in Optional set to intersect with results (NULL to discard)
#'
#' @export
-getSimilarDaysIndices = function(index, data, limit, same_season, days_in=NULL)
+getSimilarDaysIndices = function(index, data, limit, same_season,
+ days_in=NULL, operational=TRUE)
{
index = dateIndexToInteger(index, data)
# Look for similar days (optionally in same season)
- i = index - 1
days = c()
dt_ref = as.POSIXlt(data$getTime(index)[1]) #first date-time of current day
day_ref = dt_ref$wday #1=monday, ..., 6=saturday, 0=sunday
month_ref = as.POSIXlt(data$getTime(index)[1])$mon+1 #month in 1...12
- while (i >= 1 && length(days) < limit)
+ i = index - 1
+ if (!operational)
+ j = index + 1
+ while (length(days) < min( limit, ifelse(is.null(days_in),Inf,length(days_in)) ))
{
- dt = as.POSIXlt(data$getTime(i)[1])
- if ((is.null(days_in) || i %in% days_in) && .isSameDay(dt$wday, day_ref))
+ if (i < 1 && j > data$getSize())
+ break
+ if (i >= 1)
{
- if (!same_season || .isSameSeason(dt$mon+1, month_ref))
- days = c(days, i)
+ dt = as.POSIXlt(data$getTime(i)[1])
+ if ((is.null(days_in) || i %in% days_in) && .isSameDay(dt$wday, day_ref))
+ {
+ if (!same_season || .isSameSeason(dt$mon+1, month_ref))
+ days = c(days, i)
+ }
+ i = i - 1
+ }
+ if (!operational && j <= data$getSize())
+ {
+ dt = as.POSIXlt(data$getTime(j)[1])
+ if ((is.null(days_in) || j %in% days_in) && .isSameDay(dt$wday, day_ref))
+ {
+ if (!same_season || .isSameSeason(dt$mon+1, month_ref))
+ days = c(days, j)
+ }
+ j = j + 1
}
- i = i - 1
}
return ( days )
}
# isSameSeason
#
-# Check if two months fall in the same "season" (defined by estimated pollution rate)
+# Check if two months fall in the same "season" (defined by estimated pollution rate).
#
-# @param month month index to test
-# @param month_ref month to compare to
+# @param month Month index to test
+# @param month_ref Month to compare to
#
.isSameSeason = function(month, month_ref)
{
+ if (month_ref == 3) #TODO: same as Bruno (but weird)
+ return (month %in% c(2,3,4,9,10))
if (month_ref %in% c(11,12,1,2)) #~= mid-polluted
return (month %in% c(11,12,1,2))
if (month_ref %in% c(3,4,9,10)) #~= high-polluted
# isSameDay
#
-# Monday=Tuesday=Wednesday=Thursday ; Friday, Saturday, Sunday: specials
+# Monday=Tuesday=Wednesday=Thursday ; Friday, Saturday, Sunday: specials.
#
-# @param day day index to test
-# @param day_ref day index to compare to
+# @param day Day index to test
+# @param day_ref Day index to compare to
#
.isSameDay = function(day, day_ref)
{
- if (day_ref == 0)
- return (day==0)
- if (day_ref <= 4)
- return (day <= 4)
+ if (day_ref %in% 1:4)
+ return (day %in% 1:4)
return (day == day_ref)
}
-#' getNoNA2
-#'
-#' Get indices in data of no-NA series followed by no-NA, within [first,last] range.
-#'
-#' @param data Object of class Data
-#' @param first First index (included)
-#' @param last Last index (included)
-#'
-#' @export
-getNoNA2 = function(data, first, last)
+# getNoNA2
+#
+# Get indices in data of no-NA series preceded by no-NA, within [first,last] range.
+#
+# @inheritParams dateIndexToInteger
+# @param first First index (included)
+# @param last Last index (included)
+#
+.getNoNA2 = function(data, first, last)
{
(first:last)[ sapply(first:last, function(i)
- !any( is.na(data$getCenteredSerie(i)) | is.na(data$getCenteredSerie(i+1)) )
+ !any( is.na(data$getSerie(i-1)) | is.na(data$getSerie(i)) )
) ]
}