Dear R-list
I have a dataset like below (points), how can I produce a max value for
each column. I need a result like (I hope my eye correct):
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
[1,] 21 1 10 99 14 19 6 9 5 8 5 7
This is a small dataset from 10000 row.
> points
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
[1,] 21 0 9 16 1 11 5 2 5 8 2 5
[2,] 19 1 10 93 7 0 0 4 1 6 5 1
[3,] 13 0 4 30 5 7 1 1 5 6 3 6
[4,] 5 1 9 61 6 19 2 9 5 1 1 6
[5,] 2 1 1 99 1 18 1 3 2 8 1 2
[6,] 7 0 5 45 14 4 6 5 1 6 5 6
[7,] 0 0 6 89 14 3 2 0 3 7 2 6
[8,] 15 0 1 30 14 17 3 2 3 3 3 5
[9,] 14 0 5 28 8 10 1 6 5 2 3 6
[10,] 12 1 4 65 6 2 4 1 4 4 4 7
[11,] 14 1 1 3 12 10 5 7 4 3 3 4
[12,] 15 0 1 55 7 7 1 5 3 7 0 2
[13,] 14 0 5 4 7 11 2 0 4 2 2 3
[14,] 13 0 6 94 6 2 4 9 3 4 0 3
[15,] 21 1 5 79 14 14 6 3 5 6 5 6
>
apply(points, 2, max) Should do the job. For details look at ?apply Best, Matthias> > Dear R-list > > I have a dataset like below (points), how can I produce a max > value for > each column. I need a result like (I hope my eye correct): > > [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] > [1,] 21 1 10 99 14 19 6 9 5 8 5 7 > > This is a small dataset from 10000 row. > > points > [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] > [1,] 21 0 9 16 1 11 5 2 5 8 2 5 > [2,] 19 1 10 93 7 0 0 4 1 6 5 1 > [3,] 13 0 4 30 5 7 1 1 5 6 3 6 > [4,] 5 1 9 61 6 19 2 9 5 1 1 6 > [5,] 2 1 1 99 1 18 1 3 2 8 1 2 > [6,] 7 0 5 45 14 4 6 5 1 6 5 6 > [7,] 0 0 6 89 14 3 2 0 3 7 2 6 > [8,] 15 0 1 30 14 17 3 2 3 3 3 5 > [9,] 14 0 5 28 8 10 1 6 5 2 3 6 > [10,] 12 1 4 65 6 2 4 1 4 4 4 7 > [11,] 14 1 1 3 12 10 5 7 4 3 3 4 > [12,] 15 0 1 55 7 7 1 5 3 7 0 2 > [13,] 14 0 5 4 7 11 2 0 4 2 2 3 > [14,] 13 0 6 94 6 2 4 9 3 4 0 3 > [15,] 21 1 5 79 14 14 6 3 5 6 5 6 > > > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read > the posting guide! http://www.R-project.org/posting-guide.html >
Acchhh.... very easy, time to drink a cup of coffe, but .... Thank you for your all. apply(points, 2, max) Best regards, Muhammad Subianto On this day 17/10/2005 02:34 PM, Muhammad Subianto wrote:> Dear R-list > > I have a dataset like below (points), how can I produce a max value for > each column. I need a result like (I hope my eye correct): > > [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] > [1,] 21 1 10 99 14 19 6 9 5 8 5 7 > > This is a small dataset from 10000 row. > > points > [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] > [1,] 21 0 9 16 1 11 5 2 5 8 2 5 > [2,] 19 1 10 93 7 0 0 4 1 6 5 1 > [3,] 13 0 4 30 5 7 1 1 5 6 3 6 > [4,] 5 1 9 61 6 19 2 9 5 1 1 6 > [5,] 2 1 1 99 1 18 1 3 2 8 1 2 > [6,] 7 0 5 45 14 4 6 5 1 6 5 6 > [7,] 0 0 6 89 14 3 2 0 3 7 2 6 > [8,] 15 0 1 30 14 17 3 2 3 3 3 5 > [9,] 14 0 5 28 8 10 1 6 5 2 3 6 > [10,] 12 1 4 65 6 2 4 1 4 4 4 7 > [11,] 14 1 1 3 12 10 5 7 4 3 3 4 > [12,] 15 0 1 55 7 7 1 5 3 7 0 2 > [13,] 14 0 5 4 7 11 2 0 4 2 2 3 > [14,] 13 0 6 94 6 2 4 9 3 4 0 3 > [15,] 21 1 5 79 14 14 6 3 5 6 5 6 > > > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >