Re: [R] stack or dissolve matrix without double entries

Is this what you want: > x <- matrix(1:16,4) > rownames(x) <- colnames(x) <- LETTERS[1:4] > x A B C D A 1 5 9 13 B 2 6 10 14 C 3 7 11 15 D 4 8 12 16 > require(reshape) > # create single list > z <- melt(x) > z X1 X2 value 1 A A 1 2 B A 2 3 C A 3 4 D A 4 5 A B

[R] stack or dissolve matrix without double entries

Heja, I've some bigger distance-matrices like this: num [1:3231, 1:3231] 0.000 0.176 0.176 0.176 0.176 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:3231] "A" "B" "C" "D" ... ..$ : chr [1:3231] A" "B" "C" "D" . I actually want to convert them into a 2 column dataframe like this: data.f