projects / talweg.git / blame
| Commit | Line | Data |
|---|---|---|
| e030a6e3 BA |
1 | #' @include Forecaster.R |
| 2 | #' | |
| 3 | #' @title Level Forecaster | |
| 4 | #' | |
| 5 | #' @description Return flat serie of last observed level (on similar day). | |
| 6 | #' Inherits \code{\link{ShapeForecaster}} | |
| 7 | LevelForecaster = setRefClass( | |
| 8 | Class = "LevelForecaster", | |
| 9 | contains = "Forecaster", | |
| 10 | ||
| 11 | methods = list( | |
| 12 | initialize = function(...) | |
| 13 | { | |
| 14 | callSuper(...) | |
| 15 | }, | |
| 16 | predict = function(today, memory, horizon, all_memory=TRUE, ...) | |
| 17 | { | |
| 18 | #return last (similar) day level, or on all memory if all_memory==TRUE | |
| 19 | first_day = max(1, today-memory) | |
| 20 | index = today-7 + 1 | |
| 21 | if (all_memory) | |
| 22 | { | |
| 23 | sum_level = 0. | |
| 24 | nb_series = 0 | |
| 25 | } | |
| 26 | repeat | |
| 27 | { | |
| 28 | { | |
| 29 | last_similar_serie = data$getSerie(index)[1:horizon] | |
| 30 | index = index - 7 | |
| 31 | }; | |
| 32 | #TODO: next test is too strict | |
| 33 | if (!any(is.na(last_similar_serie))) | |
| 34 | { | |
| 35 | if (all_memory) | |
| 36 | { | |
| 37 | sum_level = sum_level + mean(last_similar_serie) | |
| 38 | nb_series = nb_series + 1 | |
| 39 | } | |
| 40 | else | |
| 41 | return (rep(mean(last_similar_serie), horizon)) | |
| 42 | }; | |
| 43 | if (index < first_day) | |
| 44 | { | |
| 45 | if (all_memory) | |
| 46 | return (rep(sum_level / nb_series, horizon)) | |
| 47 | return (NA) | |
| 48 | } | |
| 49 | } | |
| 50 | } | |
| 51 | ) | |
| 52 | ) |