How do I sum portions of a vector into another vector? E.g., for --8<---------------cut here---------------start------------->8--- > vec <- 1:10 > breaks <- c(3,8,10) --8<---------------cut here---------------end--------------->8--- I want to get a vector of length 3 with content --8<---------------cut here---------------start------------->8--- 6 = 1+2+3 30 = 4+5+6+7+8 19 = 9+10 --8<---------------cut here---------------end--------------->8--- Obviously, I could write a loop, but I would rather have a vectorized version. Thanks!
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