X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=pkg%2FR%2FForecast.R;h=a0ddcda8070e647047802985bd5b2792a3b6814f;hb=72b9c50162bcdcf6c99fbb8b2ec6ea9ba98379cb;hp=274f50eb7896511eca82cbbed8f7fdbae5c10575;hpb=1e20780ee1505fac6c7ed68d340892c497524561;p=talweg.git

diff --git a/pkg/R/Forecast.R b/pkg/R/Forecast.R
index 274f50e..a0ddcda 100644
--- a/pkg/R/Forecast.R
+++ b/pkg/R/Forecast.R
@@ -1,59 +1,74 @@
-#' @title Forecast
+#' Forecast
 #'
-#' @description Forecast encapsulation
+#' Forecast encapsulation
 #'
-#' @field pred List with
-#' \itemize{
+#' @docType class
+#' @importFrom R6 R6Class
+#'
+#' @field .pred List with \itemize{
 #'   \item serie: forecasted serie
 #'   \item params: corresponding list of parameters (weights, neighbors...)
-#'   \item index: corresponding index in data object
+#'   \item index_in_data: corresponding index in data object}
+#' @field .dates vector of day indices where forcast occurs
+#'
+#' @section Methods:
+#' \describe{
+#' \item{\code{initialize(dates)}}{
+#'   Initialize a Forecast object with a series of date indices.}
+#' \item{\code{getSize()}}{
+#'   Return number of individual forecasts.}
+#' \item{\code{append(forecast, params, index_in_data)}}{
+#'   Acquire an individual forecast, with its (optimized) parameters and the
+#'   corresponding index in the dataset.}
+#' \item{\code{getDates()}}{
+#'   Get dates where forecast occurs.}
+#' \item{\code{getForecast(index)}}{
+#'   Get forecasted serie at specified index.}
+#' \item{\code{getParams(index)}}{
+#'   Get parameters at specified index (for 'Neighbors' method).}
+#' \item{\code{getIndexInData(index)}}{
+#'   Get index in data which corresponds to current forecast.}
 #' }
 #'
-#' @exportClass Forecast
-#' @export Forecast
-Forecast = setRefClass(
-	Class = "Forecast",
-
-	fields = list(
-		pred = "list"
+Forecast = R6::R6Class("Forecast",
+	private = list(
+		.pred = list(),
+		.dates = integer(0) #store dates as integers (from 1970-01-01)
 	),
-
-	methods = list(
-		initialize = function(...)
+	public = list(
+		initialize = function(dates)
 		{
-			"Initialize empty Forecast object"
-
-			callSuper(...)
+			private$.dates <- dates
+			invisible(self)
 		},
 		getSize = function()
+			length(private$.pred)
+		,
+		append = function(forecast, params, index_in_data)
 		{
-			"Number of individual forecasts"
-
-			length(pred)
-		},
-		append = function(new_serie, new_params, new_index)
-		{
-			"Obtain a new pair (serie, params)"
-
-			pred[[length(pred)+1]] <<- list("serie"=new_serie, "params"=new_params, "index"=new_index)
+			private$.pred[[length(private$.pred)+1]] <-
+				list("forecast"=forecast, "params"=params, "index_in_data"=index_in_data)
 		},
-		getSerie = function(index)
+		getDates = function()
+			as.Date( private$.dates, origin="1970-01-01" )
+		,
+		getForecast = function(index)
 		{
-			"Serie values at specified index"
-
-			pred[[index]]$serie
+			if (is(index,"Date"))
+				index = match(index, private$.dates)
+			private$.pred[[index]]$forecast
 		},
 		getParams = function(index)
 		{
-			"Params at specified index"
-
-			pred[[index]]$params
+			if (is(index,"Date"))
+				index = match(index, private$.dates)
+			private$.pred[[index]]$params
 		},
 		getIndexInData = function(index)
 		{
-			"(day) Index in data where prediction took place"
-
-			pred[[index]]$index
+			if (is(index,"Date"))
+				index = match(index, private$.dates)
+			private$.pred[[index]]$index_in_data
 		}
 	)
 )