闲言碎语不要表,看看代码就知晓。keltner channel的代码如下
stock.calcKC <- function(dat){ ma <- EMA((Hi(dat) + Lo(dat) + Cl(dat)) / 3, n = 20) tr <- (ATR(HLC(dat), n = 10, maType="EMA"))[,2] rslt <- data.frame(as.vector(ma + (2 * tr)), as.vector(ma + tr), as.vector(ma - tr), as.vector(ma - (2 * tr))) colnames(rslt) <- c("KU2xA", "KU1xA", "KD1xA", "KD2xA") return(rslt) }
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