As a total beginner still, I am having great difficulty trying to apply ar models to column data in a matrix.
As each matrix has 20 columns (and some of these contain NA data) it is obviously a long, slow process to calculate ar models for each column individually, though I am (probably extremely stupidly) struggling to see how I am doing this wrong. I have tried using: for (i in 1:20) apply(mydata,c(,i),ar(mydata[!is.na(mydata)],order.max=3)) and apply(mydata,ar(mydata[!is.na(mydata)],order.max=3)) and apply(mydata,c(,1:20),ar(mydata[,1:20][!is.na(mydata[,1:20])],order.max=3)) and none of these work - can someone tell me what I am doing wrong?? Thank you in advance, and excuse me for my stupidity.. Laura ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
