search for: nolag

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2004 Oct 29
2
lag variable addition to data frame question
...9;, i want to create #lagged variables #of this without using as.ts(). Is #there a more effient way of doing this than#below and #without using a recursive loop such as #for( i in 1:obs)x.lag[i]= x[(i-1)] 1.here is the way i am doing the lag now x=c(3,2,3,2,1,1,1,2,1,2,1,3...1) obs=length(x) x.nolag=x[2:obs] x.lag1=x[1:(obs-1)] my.new=cbind(x.nolag,x.lag1) #since my data frame must line up my orginal x values to other columns I also # add the following x.fill= cbind(0,0) # as named the above cell lines up my factor to other factors in my data frame, #since I had chopped off the first x obs...