Hello, I would be very grateful if somebody (or everybody:)) answers my question. I am making ARMA-GARCH model with garchFit function and want in arma part make lag list (like with arma models: model=arma(data, lag=list(ar=c(2,6),ma=NULL), include.intercept=FALSE) but I don't know how to do it in garchFit function. I tried it this way:
> mmm1=garchFit(formula~arma(lag=list(ar=c(2,6),ma=NULL))+garch(1,1),data=grazos1,cond.dist=c("std"), > include.mean=FALSE,include.skew=TRUE) Error in if (u < 0 | v < 0) stop("*** ARMA orders must be positive.") : missing value where TRUE/FALSE needed In addition: Warning message: In .garchInitSeries(formula.mean = formula.mean, formula.var = formula.var, : NAs introduced by coercion but as you see only have got error. So is it possible to do and if it is, then how? thanks in advance, J -- View this message in context: http://r.789695.n4.nabble.com/garchFit-fGARCH-tp4631086.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.