Nothing
##
##
## Generic for trdes trend
##
setGeneric(name = "trdes", def = function(y, lambda, init = NULL){standardGeneric("trdes")})
##
## Methods for trdes
## (in alphabetical order)
##
## for class data.frame
setMethod(f = "trdes",
signature = c(y = "data.frame"),
definition = function(y, lambda, init = NULL){
if(!all(apply(y, 2, is.numeric))){
stop("Data frame has non-numeric columns.\n")
}
if(is.null(init)){
trd <- apply(y, 2, trdes, lambda = lambda)
} else {
idx <- 1:ncol(y)
init <- as.vector(init)
trd <- sapply(idx, function(i) trdes(y[, i], lambda = lambda, init = init[i]))
}
return(trd)
}
)
## for class matrix
setMethod(f = "trdes",
signature = c(y = "matrix"),
definition = function(y, lambda, init = NULL){
if(is.null(init)){
trd <- apply(y, 2, trdes, lambda = lambda)
} else {
idx <- 1:ncol(y)
init <- as.vector(init)
trd <- sapply(idx, function(i) trdes(y[, i], lambda = lambda, init = init[i]))
}
return(trd)
}
)
## for class mts
setMethod(f = "trdes",
signature = c(y = "mts"),
definition = function(y, lambda, init = NULL){
if(is.null(init)){
trd <- apply(y, 2, trdes, lambda = lambda)
} else {
idx <- 1:ncol(y)
init <- as.vector(init)
trd <- sapply(idx, function(i) trdes(y[, i], lambda = lambda, init = init[i]))
}
attributes(trd) <- attributes(y)
return(trd)
}
)
## for class numeric
setMethod(f = "trdes",
signature = c(y = "numeric"),
definition = function(y, lambda, init = NULL){
if((0 > lambda) | (lambda > 1)){
stop("\nThe parameter lambda must be in the interval (0, 1).\n")
}
if(is.null(init)){
trd <- filter(x = lambda * y, filter = 1 - lambda, method = "recursive")
} else {
trd <- filter(x = lambda * y, filter = 1 - lambda, method = "recursive", init = init)
}
return(trd)
}
)
## for class timeSeries
setMethod(f = "trdes",
signature = c(y = "timeSeries"),
definition = function(y, lambda, init = NULL){
if(is.null(init)){
trd <- apply(y, 2, trdes, lambda = lambda)
} else {
idx <- 1:ncol(y)
init <- as.vector(init)
trd <- sapply(idx, function(i) trdes(c(y[, i]), lambda = lambda, init = init[i]))
trd <- timeSeries(trd, charvec = time(y))
attributes(trd) <- attributes(y)
}
return(trd)
}
)
## for class ts
setMethod(f = "trdes",
signature = c(y = "ts"),
definition = function(y, lambda, init = NULL){
if(is.null(init)){
trd <- trdes(c(y), lambda = lambda)
} else {
trd <- trdes(c(y), lambda = lambda, init = init)
}
attributes(trd) <- attributes(y)
return(trd)
}
)
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