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1075966
2007 May 08
4
minimum of each row in a matrix
Hallo,
I just followed the discussion of the title: minimum from matrix.
I have a similar problem.
> a=matrix(c(0,2, 0, 0, 1, 3, 0, 3, 2, 0, 3, 5, 0, 4, 0, 0),ncol=4)
> a=rbind(a,1:4)
> a
[,1] [,2] [,3] [,4]
[1,] 0 1 2 0
[2,] 2 3 0 4
[3,] 0 0 3 0
[4,] 0 3 5 0
[5,] 1 2 3 4
>
> minOfColumns=apply(a, 2, function(x)