Delete rows based on first occurence of value in R -

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so have issue row deletion. i'm after delete rows after first occurrence of value 1 in df$c. needs happen every value in df$a , every value in df$b, if that's clear. below example of df. appreciated!

a b c 1 1 0 1 1 0 1 1 1 1 1 0 1 1 0 1 2 0 1 2 1 2 1 0 2 1 1 2 1 0

an alternative answer problem using statement...

new.df=my.df[1:which(my.df$c==1)[1],]

in way can check logical operations on data


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