[R] keep only the first value of a numeric sequence

jeff6868 geoffrey_klein at etu.u-bourgogne.fr
Mon Dec 15 11:33:24 CET 2014

Hello dear R-helpers,

I have a small problem in my algorithm. I have sequences of "0" and "1"
values in a column of a huge data frame, and I just would like to keep the
first value of each sequences of "1" values, such like in this example:

data <-

Any easy way to do this?

Thanks everybody!

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