On 01/03/14 14:49, Chirag Gupta wrote:
Hi list
I have a matrix of size m x n (m and n are different, hence non square!)
I want to melt it in such a way that I get a df of 3 columns. m ,n
Surely you mean i, j (i = 1, ..., m), j = 1, ..., n).
and cell
value in the original matrix.
Yes:
dfX <- data.frame(i=as.vector(row(X)),j=as.vector(col(X)),
value=as.vector(X))
where X is your matrix. The fact that X is non-square is of course
completely irrelevant.
cheers,
Rolf Turner
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