[R] Loop and cbind

[livia]

Hi, I would like to apply the following function for i between 1 and 12, and
then construct a list of the return series.

for (i in 1:12){
ewma[i] <- emaTA(calm[[i]]^2,0.03)
standard[i]<- calm[[i]]/sqrt(ewma[i])
standard <- cbind(standard[i])
}

But it does not work. Could anyone give me some advice how can I achieve
this? Many thanks
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