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#'Computes Forecast or Observed Anomalies
#'
#'This function computes anomalies from any experimental or observational
#'matrix output from \code{Load()} and their climatologies output from
#'\code{Clim()}.
#'
#'@param var Model or observational data:\cr
#' c(nmod/nexp/nobs, nmemb/nparam, nsdates, nltime) up to \cr
#' c(nmod/nexp/nobs, nmemb/nparam, nsdates, nltime, nlevel, nlat, nlon)\cr
#'@param clim Climatologies from clim: c(nmod/nexp/nobs, nltime) \cr
#' up to c(nmod/nexp/nobs, nltime, nlevel, nlat, nlon) or \cr
#' c(nmod/nexp/nobs, nmemb/nparam, nltime) up to \cr
#' c(nmod/nexp/nobs, nmemb/nparam, nltime, nlevel, nlat, nlon) or \cr
#' c(nmod/nexp/nobs, nmemb/nparam, nsdates, nltime) up to \cr
#' c(nmod/nexp/nobs, nmemb/nparam, nsdates, nltime, nlevel, nlat, nlon) \cr
#' depending on the options provided to \code{Clim()}.
#'
#'@return Array with same dimensions as 'var'.
#'@keywords datagen
#'@author History:\cr
#' 0.1 - 2012-03 (V. Guemas) - Original code\cr
#' 1.0 - 2013-09 (N. Manubens) - Formatting to R CRAN
#'
#'@examples
#'# Load sample data as in Load() example:
#'example(Load)
#'clim <- Clim(sampleData$mod, sampleData$obs)
#'ano_exp <- Ano(sampleData$mod, clim$clim_exp)
#'ano_obs <- Ano(sampleData$obs, clim$clim_obs)
#'runmean_nb_months <- 12
#'dim_to_smooth <- 4 # Smooth along lead-times
#'smooth_ano_exp <- Smoothing(ano_exp, runmean_nb_months, dim_to_smooth)
#'smooth_ano_obs <- Smoothing(ano_obs, runmean_nb_months, dim_to_smooth)
#' \donttest{
#'PlotAno(smooth_ano_exp, smooth_ano_obs, startDates,
#' toptitle = paste('smoothed anomalies'), ytitle = c('K', 'K', 'K'),
#' legends = 'ERSST', biglab = FALSE, fileout = 'tos_ano.eps')
#' }
#'@export
Ano <- function(var, clim) {
#
# Duplicate clim dimensions to heve same dimensions as var
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#
dimvar <- dim(var)
if (length(dim(clim)) <= 2) {
clim <- InsertDim(clim, 2, dimvar[2])
}
# Check 2nd dim
if (length(dimvar) > length(dim(clim))) {
if (dim(clim)[2] != dimvar[2]) {
clim <- InsertDim(clim, 2, dimvar[2])
} else { # clim[2] == dimvar[2]
if (is.null(names(dim(clim))) | is.null(names(dimvar))) {
stop('Provide dimension names on parameter \'var\' and \'clim\' to avoid ambiguity.')
} else {
if (names(dim(clim)[2]) != names(dimvar[2])) {
clim <- InsertDim(clim, 2, dimvar[2])
}
}
}
}
# Check if clim has 3rd dim. If yes, directly go to the next if. If not, add 3rd dim.
if (length(dimvar) > length(dim(clim)) & length(dim(clim)) == 2) {
clim <- InsertDim(clim, 3, dimvar[3])
}
# Check 3rd dim
if (length(dimvar) > length(dim(clim))) {
if (dim(clim)[3] != dimvar[3]) {
clim <- InsertDim(clim, 3, dimvar[3])
} else { # clim[3] == dimvar[3]
if (is.null(names(dim(clim))) | is.null(names(dimvar))) {
stop('Provide dimension names on parameter \'var\' and \'clim\' to avoid ambiguity.')
} else {
if (names(dim(clim)[3]) != names(dimvar[3])) {
clim <- InsertDim(clim, 3, dimvar[3])
}
}
}
}
# Check if clim has 4th dim. If yes, directly go to the next if. If not, add 4th dim.
if (length(dimvar) > length(dim(clim)) & length(dim(clim)) == 3) {
clim <- InsertDim(clim, 4, dimvar[4])
}
# Check 4th dim
if (length(dimvar) > length(dim(clim))) {
if (dim(clim)[4] != dimvar[4]) {
clim <- InsertDim(clim, 4, dimvar[4])
} else {
if (is.null(names(dim(clim))) | is.null(names(dimvar))) {
stop('Provide dimension names on parameter \'var\' and \'clim\' to avoid ambiguity.')
} else {
if (names(dim(clim)[4]) != names(dimvar[4])) {
clim <- InsertDim(clim, 4, dimvar[4])
}
}
}
}
# Check if clim has 5th dim. If yes, directly go to the next if. If not, add 5th dim.
if (length(dimvar) > length(dim(clim)) & length(dim(clim)) == 4) {
clim <- InsertDim(clim, 5, dimvar[5])
}
# Check 5th dim
if (length(dimvar) > length(dim(clim))) {
if (dim(clim)[5] != dimvar[5]) {
clim <- InsertDim(clim, 5, dimvar[5])
} else {
if (is.null(names(dim(clim))) | is.null(names(dimvar))) {
stop('Provide dimension names on parameter \'var\' and \'clim\' to avoid ambiguity.')
} else {
if (names(dim(clim)[5]) != names(dimvar[5])) {
clim <- InsertDim(clim, 5, dimvar[5])
}
}
}
}
# Check if clim has 6th dim. If yes, directly go to the next if. If not, add 6th dim.
if (length(dimvar) > length(dim(clim)) & length(dim(clim)) == 5) {
clim <- InsertDim(clim, 6, dimvar[6])
}
# Check 6th dim
if (length(dimvar) > length(dim(clim))) {
if (dim(clim)[6] != dimvar[6]) {
clim <- InsertDim(clim, 6, dimvar[6])
} else {
if (is.null(names(dim(clim))) | is.null(names(dimvar))) {
stop('Provide dimension names on parameter \'var\' and \'clim\' to avoid ambiguity.')
} else {
if (names(dim(clim)[6]) != names(dimvar[6])) {
clim <- InsertDim(clim, 6, dimvar[6])
}
}
}
}
# Check if clim has 7th dim. If yes, directly go to the next if. If not, add 7th dim.
if (length(dimvar) > length(dim(clim)) & length(dim(clim)) == 6) {
clim <- InsertDim(clim, 7, dimvar[7])
}
#
# Raw anomalies
# ~~~~~~~~~~~~~~~
#
ano <- var - clim
#
# Outputs
# ~~~~~~~~~
#
ano
}
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