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2007 Dec 11
2
Alternative to For Loop?
Hi, I am doing a calculation on a long series using a For Loop. Here is an example of the calculation: accumulate=function(x){ y=0 z=0 for(i in 1:length(x)){ y=y+x[i] z=c(z,y) } return(z[2:length(z)]) } > x=c(1:10) > x [1] 1 2 3 4 5 6 7 8 9 10 > accumulate(x) [1] 1 3 6 10 15 21 28 36 45 55 > Although the For Loop works, looping through an array is time