Re: [R-br] ajuda contar subperiodos no R

exemplo = structure(list(X1979 = c(1L, 0L, 0L, 0L, 0L, 0L, 0L, 1L, 0L, 0L, 1L, 0L, 1L, 0L, 1L, 1L, 1L, 1L, 1L, 0L, 0L, 1L, 1L, 1L, 1L, 1L, 1L), X1980 = c(0L, 0L, 1L, 1L, 1L, 0L, 0L, 1L, 0L, 0L, 1L, 1L, 1L, 1L, 0L, 0L, 0L, 0L, 1L, 1L, 1L, 1L, 0L, 0L, 0L, 0L, 0L)), .Names = c("X1979", "X1980"), class = "data.frame", row.names = c(NA, -27L)) lapply(exemplo, rle) O resultado sera: $X1979 Run Length Encoding lengths: int [1:11] 1 6 1 2 1 1 1 1 5 2 ... values : int [1:11] 1 0 1 0 1 0 1 0 1 0 ... $X1980 Run Length Encoding lengths: int [1:9] 2 3 2 1 2 4 4 4 5 values : int [1:9] 0 1 0 1 0 1 0 1 0 a interpretacao fica pra vc... assim como a dica da criacao do conjunto de dados de exemplo. b