Hi could you yelp me please with this Suppose that we have the following matrix
m1<-matrix(c("a","7","a","i","o","u","i","1","2","3","4","5","6","7"), ncol=2) m1 [,1] [,2] [1,] "a" "1" [2,] "7" "2" [3,] "a" "3" [4,] "i" "4" [5,] "o" "5" [6,] "u" "6" [7,] "i" "7" m2<-c("a","7") I need to obtain all the rows in m1 in which m2 the elements of m2 are present [,1] [,2] [1,] "a" "1" [2,] "7" "2" [3,] "a" "3" [7,] "i" "7" Thx again -- Alberto Lora Michiels Rue du Progrès, 6B 7860 Lessines GSM 32(0)496659457 [[alternative HTML version deleted]]
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