Commit | Line | Data |
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e030a6e3 | 1 | #' @include Forecaster.R |
3d69ff21 | 2 | #' |
e030a6e3 | 3 | #' @title Persistence Forecaster |
3d69ff21 | 4 | #' |
e5aa669a | 5 | #' @description Return the last centered (similar) day curve. |
e030a6e3 BA |
6 | #' Inherits \code{\link{Forecaster}} |
7 | PersistenceForecaster = setRefClass( | |
8 | Class = "PersistenceForecaster", | |
9 | contains = "Forecaster", | |
3d69ff21 BA |
10 | |
11 | methods = list( | |
12 | initialize = function(...) | |
13 | { | |
14 | callSuper(...) | |
15 | }, | |
e030a6e3 | 16 | predictShape = function(today, memory, horizon, ...) |
3d69ff21 | 17 | { |
e5aa669a | 18 | # Return centered last (similar) day curve, avoiding NAs until memory is run |
09cf9c19 | 19 | first_day = max(1, today-memory) |
e5aa669a BA |
20 | same_day = ifelse(hasArg("same_day"), list(...)$same_day, TRUE) |
21 | # If 'same_day', get the last known future of similar day: -7 + 1 == -6 | |
22 | index = today - ifelse(same_day,6,0) | |
09cf9c19 BA |
23 | repeat |
24 | { | |
25 | { | |
e5aa669a BA |
26 | last_serie = data$getCenteredSerie(index)[1:horizon] |
27 | index = index - ifelse(same_day,7,1) | |
09cf9c19 | 28 | }; |
e5aa669a BA |
29 | if (!any(is.na(last_serie))) |
30 | return (last_serie); | |
09cf9c19 BA |
31 | if (index < first_day) |
32 | return (NA) | |
33 | } | |
3d69ff21 BA |
34 | } |
35 | ) | |
36 | ) |