Nothing
modalreg.lin.circ<-function(x, y, t=NULL, bw=NULL, tol = 0.0001, maxit = 500, len=300){
name <- deparse(substitute(x))
datax <- x
datay <- y
if (!is.numeric(x)) stop("argument 'x' must be numeric")
if (!is.numeric(y)) stop("argument 'y' must be numeric")
if (length(x) != length(y)) stop("'x' and 'y' must have the same number of observations")
if (is.circular(y)){
datacircularp <- circularp(y)
} else {
datacircularp <- list(type = "angles", units = "radians", template = "none", modulo = "2pi", zero = 0, rotation = "counter")
}
dc <- list()
dc$type <- datacircularp$type
dc$units <- datacircularp$units
dc$template <- datacircularp$template
dc$modulo <- datacircularp$modulo
dc$zero <- datacircularp$zero
dc$rotation <- datacircularp$rotation
if (is.null(t)){
t <- seq(min(x), max(x), length=len)
}else{
if (!is.numeric(t)) stop("argument 't' must be numeric")
t.na <- is.na(t)
t <- t[!t.na]
if (sum(t.na)>0) warning("'t' contains missing values. They were removed")
}
if (!is.numeric(tol))
stop("argument 'tol' must be numeric")
if (tol<=0)
stop("argument 'tol' must be greater than 0")
if (maxit<=0)
stop("argument 'maxit' must be greater than 0")
y <- conversion.circular(y, units = "radians", zero = 0, rotation = "counter", modulo = "2pi")
nax <- is.na(x)
nay <- is.na(y)
x<-x[!nax & !nay]
y<-y[!nax & !nay]
if ((sum(nax)+sum(nay))>0) warning("Missing values were removed.", "\n")
n <- length(x)
if (n==0) stop("No observations (at least after removing missing values)")
if(is.null(bw)){
bw <- bw.modalreg.lin.circ(x, y, lower = NULL, upper = NULL, tol = 0.00001)
}else{
if(!is.numeric(bw) | length(bw)!=2)
stop("'bw' must be a vector of length two")
if(any(bw<0))
stop("The components of 'bw' must be positive.")
}
attr(y, "class") <- attr(y, "circularp") <- NULL
fit <- R_modereg_LinCirc(circular(y,units="radians"),x,t,bw[1],bw[2],maxit,tol)
structure(list(datax = datax, datay = datay, x = t, estim = fit,
bw = bw, n = n, kernel = c("normal","vonmises"), call = match.call(),
data.name = name, has.na = FALSE))
}
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