Dear Kevin,
At 10:57 AM 9/28/2002 +1200, Ko-Kang Kevin Wang wrote:
>This is an easy question, however I cannot remember the exact command of
>doing it :-(
>
>Say I have a matrix:
> > ff
> [,1] [,2]
> [1,] 0.1000000 116.76987
> [2,] 0.6444444 108.26811
> [3,] 1.1888889 95.00240
> [4,] 1.7333333 112.13647
> [5,] 2.2777778 107.39893
> [6,] 2.8222222 115.34615
> [7,] 3.3666667 97.81029
> [8,] 3.9111111 105.35119
> [9,] 4.4555556 105.50052
> [10,] 5.0000000 111.35761
>
>And I'd like to display the number in the first column, where its
>corresponding number is the minimum of the second column.
>
>In other words, I'd like to be able to extract out 1.1888889 from column
>1, as its correponding number in column 2 (95.00240) is the smallest in
>the column.
Try ff[which.min(ff[,2]), 1].
John
-----------------------------------------------------
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario, Canada L8S 4M4
email: jfox at mcmaster.ca
phone: 905-525-9140x23604
web: www.socsci.mcmaster.ca/jfox
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