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Hi Everybody I have the following problem suppose that we a<-c("uno","dos","tres") I am working with a while cycle and the idea is in each iteration adding an item to a list In the first iteration the resultshould be: [[1]] [1] "uno" In the second [[1]] [1] "uno" [[2]] [1] "dos" And the final result [[1]] [1] "uno"

Hi could yelp me with this Suppose that we have the following matrix m1<-matrix(c("a","e","a","i","o","u","i","1","2","3","4","5","6","7"), ncol=2) m2<-c("a","i") m1 [,1] [,2] [1,] "a" "1" [2,]

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,]

Dear sir, I have a matrix like a<-matrix(c(0,2,0,4,0,6,5,8,0),nrow=3) colnames(a)<-c("F1","F2","F3") rownames(a)<-c("A1","A2","A3") a F1 F2 F3 A1 0 4 5 A2 2 0 8 A3 0 6 0 I want to extract all pairs (rownames, columnames) from which the value in the matrix is 0 The result should be something like this A1, F1 A2,

Hi Everbody Could somebody help me.? I need to remove the columns where the sum of it components is equal to zero. For example > a<-matrix(c(0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,1,1,0,0,1,0), ncol=4) > a [,1] [,2] [,3] [,4] [1,] 0 0 0 1 [2,] 0 1 0 1 [3,] 0 0 0 0 [4,] 0 1 0 0 [5,] 0 0 0 1 [6,] 0 0 0 0 Columns

Question 2a) I am also working with arules package and I have the following problem let suppose the matrix b like: b<-matrix(c(1,1,1,1,1,1,0,0,1,1,1,1,0,0,1,1,0,1,1,1,1,1,1,1),nrow=6) rownames(b)=c("T1", "T2", "T3", "T4", "T5", "T6") colnames(b)=c("It1", "It2", "It3", "It4") bt<-as(b,