Odp: Insert value in a Vector Alternately
Petr Pikal petr.pikal at precheza.cz 724008364, 581252140, 581252257 r-help-bounces at r-project.org napsal dne 19.02.2009 07:47:40:
Hi, I have a vector that look like this:
dat
V1 V2 V3 V4 V5 V6
0.00377467 0.00377467 0.00377467 0.00380083 0.00380083 0.00380083
V7 V8 V9 V10 V11 V12
0.00380959 0.00380959 0.00380959 0.00380083 0.00380083 0.00380083
what I want to do is to insert 0 (zero) for every 3 position yielding:
V1 V2 V3 V4 V5 V6
V7 V8
0 0.00377467 0.00377467 0.00377467 0 0.00380083 0.00380083 0.00380083
V9 V10 V11 V12 V13 V14
V15 V16
0 0.00380959 0.00380959 0.00380959 0 .00380083 0.00380083 0.00380083
Is there a quick way to do it in R?
Use list y<-rnorm(10) lll<-split(y,0:9 %/% 3) unlist(lapply(lll, function(x) c(0,x))) Regards Petr
- Gundala Viswanath Jakarta - Indonesia
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