Find a vector in matrix when order matters in R -


i have matrix m follows:

> m [,1] [,2] [,3] [,4] [,5] [1,]    4    1    5    2    3 [2,]    5    2    3    4    1 [3,]    3    4    1    5    2 [4,]    1    5    2    3    4 [5,]    2    3    4    1    5 [6,]    4    1    5    2    3 [7,]    5    2    3    4    1 [8,]    3    4    1    5    2

and vector named vec follows:

> vec [1] 3 1

i'd find rows in m containing vec in same order. e.g. result should (note first, fourth , sixth rows not of interest):

> res [2,]    5    2    3    4    1 [3,]    3    4    1    5    2 [5,]    2    3    4    1    5 [7,]    5    2    3    4    1 [8,]    3    4    1    5    2

would please tell me how can in r? thanks

here's general solution. can create regex pattern vec check against data combined set of strings each row:

v2 <- paste(vec, collapse=".*?") df.vec <- do.call(paste, as.data.frame(m)) m[grep(v2, df.vec),] #      [,1] [,2] [,3] [,4] [,5] # [2,]    5    2    3    4    1 # [3,]    3    4    1    5    2 # [5,]    2    3    4    1    5 # [7,]    5    2    3    4    1 # [8,]    3    4    1    5    2

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