Dear all,
I am reading with R some measurements vectors from an external device.
The length of each vector (containing numbers) is not constant.

I would like by doubling the numbers of elements I select to shrink the vector to a new one

Let's call the vector I read from the device as oldvector 


and the shrinked version of it as newVersion

I want to have
newVersion[1]<- mean(oldvector[1])
newVersion[2]<- mean(oldvector[2:3])
newVersion[3]<- mean(oldvector[4:7])
newVersion[4]<- mean(oldvector[8:15])

as I said the length of oldvector is not the same sol it might be also the case that the last window will not find the corresponding number of elements.

How I can handle that in R?
Regards
Alex
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