search for: tp1840718p1840730

Hi All I have a vector x containing 2 levels x = c(1,1,1,0,0,0,0,1,1,0,0,0,1,1,0) I would like to derive the following summarization Level Count 1 3 0 4 1 2 0 3 1 2 0 1 I have generated an inelegant solution using lags and loops but feel sure that there must be a better approach. If anyone has any thoughts I would be very grateful if you would share them. Thanks and best regards Pete --