Re: [R] SORT MATRIX

From: Erik Iverson <iverson_at_biostat.wisc.edu>
Date: Mon, 10 Mar 2008 16:03:49 -0500

Here's an example. See ?order

mt <- matrix(sample(1:20), ncol = 2)
mt[order(mt[,1]),]

Best,
Erik Iverson

ermimi wrote:
> I have a matrix with 2 columns and n row. I need sort the matrix by the first
> column but the second row must be sort in the same order that the first
> column. Somebody know how I can sort this matrix.
> Thanks very much



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