r - Deleting specific columns based on conditions -


i have dataset in r column indicating errors on task: 0 = no error. 1 = error.

how delete rows error column shows 1 (for error) , subsequent row (even if 0) ?

example:

  id part block response       time wrong 1  1    1     1      307 2015-04-26     0 2  2    1     1      291 2015-05-03     1 3  3    1     1      310 2015-05-10     0

how delete rows 2 , 3?

cheers!

you do:

library(dplyr) df %>% filter(!(wrong == 1 | lag(wrong == 1, default = f)))

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