[R] counts of a vector

speretti sabrina.peretti at gmail.com
Wed May 26 19:22:18 CEST 2010


Hi,

I need help to find an efficient way to transform a vector like:

a<-c(1,1,0,1,0,0,0,1,1,1,1,0,1,0,1,1)

in a vector that counts only di 1 elements, like:

b<-c(1,2,0,1,0,0,0,1,2,3,4,0,1,0,1,2)


Thank you!
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