Hello,
Newbie question and hope you can help .
I have two vector V1 and V2, where length(V2) = length of (V1) * 2;
length(V1) ~ 16,000.
For each member in V1, I need to compare 2 element of V2 for equality
i.e.
for (I in 1:length (V1)) {
if ( v2[i] == v1[i] & v2[i+1]==v1[i] ){
statement_1
statement_2
.
}
}
This for-loop is too slow (it takes a good 5 minutes on my Windows machine)
to finish processing the vector V1 of 16,000; I will need to process a lot
more than 16,000 (about 300*16,000).
Is there a better way to do looping with R? Any help is greatly appreciate
--MyC.
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