Nothing
cajorls <- function(z, r = 1, reg.number = NULL){
if ((!inherits(z, "ca.jo")) && (!inherits(z, "cajo.test"))) {
stop("\nPlease, provide object of class 'ca.jo' or 'cajo.test' as 'z'.\n")
}
P <- ncol(z@Z0)
r <- as.integer(r)
if((r < 1) || (r > P - 1)){
stop(paste("Please, provide a cointegration rank 'r' in the interval of 1 to", P - 1, ", in accordance with 'z@V'.\n", sep = " "))
}
beta <- matrix(z@V[, 1:r], ncol = r)
C1 <- diag(r)
C2 <- matrix(0, nrow = nrow(beta) - r, ncol = r)
C <- rbind(C1, C2)
betanorm <- beta %*% solve(t(C) %*% beta)
ECT <- z@ZK %*% betanorm
colnames(ECT) <- paste("ect", 1:r, sep = "")
colnames(betanorm) <- colnames(ECT)
rownames(betanorm) <- colnames(z@ZK)
data.mat <- data.frame(z@Z0, ECT, z@Z1)
text <- colnames(data.mat)[-c(1:P)]
text1 <- paste(text, "", sep = "+", collapse = "")
text2 <- paste("~", substr(text1, 1, nchar(text1) - 1))
if (!is.null(reg.number)) {
reg.number <- as.integer(reg.number)
if (reg.number > ncol(z@Z0) || reg.number < 1) {
stop("\nPlease, provide a valid number of the regression within \n the VECM, numbering from 1 to ", P, ".\n")
}
form1 <- formula(paste("z@Z0[, reg.number]", text2, "-1"))
rlm <- lm(substitute(form1), data = data.mat)
}
else if (is.null(reg.number)) {
form1 <- formula(paste("z@Z0", text2, "-1"))
rlm <- lm(substitute(form1), data = data.mat)
}
return(list(rlm = rlm, beta = betanorm))
}
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