各位大佬可以幫忙解釋下這個報錯嗎
模型:m2 <- garchFit(formula=~arma(1,0)+garch(1,1), data=https://bbs.csdn.net/topics/y1, cond.dist="norm", trace=FALSE)
Warning message:
Using formula(x) is deprecated when x is a character vector of length > 1.
Consider formula(paste(x, collapse = " ")) instead.
模型里用的資料是numeric
換成時間序列后同樣報錯
提前謝謝大家
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