Nothing

```
#Source: fitcar1.R
#
fitcar1 <- function(z, cL=-Inf, cU=Inf, verboseQ=FALSE){
w <- z
mw <- mean(w, na.rm=TRUE)
w[is.na(w)] <- mw
phi <- ar1est0(w-mw)
err <- iter <- LL <- 1
while (err > 1e-6 && iter < 50) {
w <- z
LL0 <- LL
w[1] <- ifelse(is.na(w[1]), mw, w[1])
for (i in 2:length(w))
w[i] <- ifelse(is.na(w[i]), mw+phi*(w[i-1]-mw), w[i])
ans <- fitar1(w)
mw <- ans[1]
phi <- ans[2]
LL <- ans[3]
err <- abs(LL-LL0)
iter <- iter+1
if (verboseQ){
cat("iteration:", iter, "\n")
cat("LL = ", LL, "\n")
cat("phi =", phi, "\n")
cat("mw =", mw, "\n")
}
}
c(mw,phi,LL)
}
```

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