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2012 Jun 29
5
assign object with loop (translation from SAS to R)
I have a dataset named DM with p1, p2, ...., p9 (9 columns, numerical values) I would like to calculate to multify each pair of columns (p1p2, p1p3,... p1p9, p2p3, p2p4.... p8p9) and assign them in p1p2, p1p3,... p1p9, p2p3, p2p4.... p8p9 In SAS, l=0; p_int_sum=0; do i=1 to 8; do j=(i+1) to 9; l=l+1; p{i}p{j}=p{i}*p{j}; end; end; I would like to know how to assign them in R I tried for function but failed. for (i in 1:8) { for (j in 2:9) { DM$p[i]p[j] &lt...