Hi r-users,
How do find the mean for each row? Thank you in advance for your help.
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 Day Totals
1 0.0 0.0 0.0 0.0 0.6 0.0 8.4 0.0 29.4 0.0 38.4
2 0.0 0.0 1.8 0.0 22.4 0.0 0.2 0.4 0.8 0.0 25.6
3 7.8 0.0 0.0 17.6 1.4 0.0 0.0 0.0 0.0 0.0 26.8
4 2.2 0.8 0.4 0.0 0.2 11.2 1.4 33.2 0.0 0.0 49.4
5 0.2 1.8 0.0 1.0 0.0 0.2 0.0 12.2 0.0 19.2 34.6
6 0.0 0.0 0.0 1.0 0.0 0.0 0.0 2.2 0.0 14.6 17.8
7 0.0 0.0 0.0 0.0 3.6 0.2 0.0 2.0 0.0 0.2 6.0
8 0.0 0.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0
9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
10 1.0 1.4 0.0 0.0 0.0 1.0 0.4 0.0 0.0 0.0 3.8
11 0.0 8.2 0.0 0.0 0.0 0.0 8.4 0.0 0.0 0.4 17.0
12 10.8 0.8 0.0 0.0 0.0 0.0 1.0 0.0 0.0 4.2 16.8
13 32.8 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.2 0.2 34.0
14 1.0 0.0 1.6 0.2 0.0 0.0 0.0 0.0 0.0 0.0 2.8
15 0.0 0.0 0.0 2.2 1.4 0.0 0.0 0.0 0.0 0.0 3.6
16 0.6 0.0 0.0 0.6 22.0 0.0 0.0 0.0 0.0 0.0 23.2
17 0.0 0.0 0.0 0.0 0.0 0.0 2.8 0.0 0.0 0.0 2.8
18 2.8 0.0 0.0 0.0 0.0 0.0 8.2 0.0 0.0 8.2 19.2
19 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.2 0.4
20 0.0 8.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.2
21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.4
23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.0 0.0 1.2
24 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 8.2 0.0 11.2
25 3.2 0.0 0.0 0.6 0.6 0.0 0.0 0.0 11.8 0.0 16.2
26 0.0 0.0 26.2 0.0 12.6 0.0 0.0 2.2 0.0 0.0 41.0
27 0.2 0.0 10.6 0.0 1.2 0.0 0.0 1.8 0.0 0.0 13.8
28 0.0 4.0 0.0 5.8 0.0 0.0 0.0 0.0 0.0 0.0 9.8
29 0.2 12.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.6
30 0.0 2.6 0.0 0.0 2.2 0.0 0.0 0.0 0.0 0.0 4.8
31 0.0 0.0 0.6 0.0 0.8 0.0 0.0 0.0 4.8 0.0 6.2
Year Totals 62.8 40.2 51.2 29.8 70.0 12.8 30.8 57.2 55.2 47.6 457.6
____________________________________________________________________________________
Be a better friend, newshound, and
How about rowSums(x)/ncol(x), where x is the matrix? On Mon, Mar 17, 2008 at 1:48 PM, Roslina Zakaria <zroslina at yahoo.com> wrote:> Hi r-users, > How do find the mean for each row? Thank you in advance for your help. > > > 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 Day Totals > 1 0.0 0.0 0.0 0.0 0.6 0.0 8.4 0.0 29.4 0.0 38.4 > 2 0.0 0.0 1.8 0.0 22.4 0.0 0.2 0.4 0.8 0.0 25.6 > 3 7.8 0.0 0.0 17.6 1.4 0.0 0.0 0.0 0.0 0.0 26.8 > 4 2.2 0.8 0.4 0.0 0.2 11.2 1.4 33.2 0.0 0.0 49.4 > 5 0.2 1.8 0.0 1.0 0.0 0.2 0.0 12.2 0.0 19.2 34.6 > 6 0.0 0.0 0.0 1.0 0.0 0.0 0.0 2.2 0.0 14.6 17.8 > 7 0.0 0.0 0.0 0.0 3.6 0.2 0.0 2.0 0.0 0.2 6.0 > 8 0.0 0.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 > 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 > 10 1.0 1.4 0.0 0.0 0.0 1.0 0.4 0.0 0.0 0.0 3.8 > 11 0.0 8.2 0.0 0.0 0.0 0.0 8.4 0.0 0.0 0.4 17.0 > 12 10.8 0.8 0.0 0.0 0.0 0.0 1.0 0.0 0.0 4.2 16.8 > 13 32.8 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.2 0.2 34.0 > 14 1.0 0.0 1.6 0.2 0.0 0.0 0.0 0.0 0.0 0.0 2.8 > 15 0.0 0.0 0.0 2.2 1.4 0.0 0.0 0.0 0.0 0.0 3.6 > 16 0.6 0.0 0.0 0.6 22.0 0.0 0.0 0.0 0.0 0.0 23.2 > 17 0.0 0.0 0.0 0.0 0.0 0.0 2.8 0.0 0.0 0.0 2.8 > 18 2.8 0.0 0.0 0.0 0.0 0.0 8.2 0.0 0.0 8.2 19.2 > 19 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.2 0.4 > 20 0.0 8.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.2 > 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 > 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.4 > 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.0 0.0 1.2 > 24 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 8.2 0.0 11.2 > 25 3.2 0.0 0.0 0.6 0.6 0.0 0.0 0.0 11.8 0.0 16.2 > 26 0.0 0.0 26.2 0.0 12.6 0.0 0.0 2.2 0.0 0.0 41.0 > 27 0.2 0.0 10.6 0.0 1.2 0.0 0.0 1.8 0.0 0.0 13.8 > 28 0.0 4.0 0.0 5.8 0.0 0.0 0.0 0.0 0.0 0.0 9.8 > 29 0.2 12.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.6 > 30 0.0 2.6 0.0 0.0 2.2 0.0 0.0 0.0 0.0 0.0 4.8 > 31 0.0 0.0 0.6 0.0 0.8 0.0 0.0 0.0 4.8 0.0 6.2 > Year Totals 62.8 40.2 51.2 29.8 70.0 12.8 30.8 57.2 55.2 47.6 457.6 > > > ____________________________________________________________________________________ > Be a better friend, newshound, and > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- ??? Hesen Peng Department of Statistics, Fudan University, Shanghai, P. R. C. Tel: Mobile 86-13052231416 Dormitory 86-21-65647724 Home 86-23-68207912
or rowMeans ... Matthias Hesen Peng wrote:> How about rowSums(x)/ncol(x), where x is the matrix? > > > On Mon, Mar 17, 2008 at 1:48 PM, Roslina Zakaria <zroslina at yahoo.com> wrote: > >> Hi r-users, >> How do find the mean for each row? Thank you in advance for your help. >> >> >> 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 Day Totals >> 1 0.0 0.0 0.0 0.0 0.6 0.0 8.4 0.0 29.4 0.0 38.4 >> 2 0.0 0.0 1.8 0.0 22.4 0.0 0.2 0.4 0.8 0.0 25.6 >> 3 7.8 0.0 0.0 17.6 1.4 0.0 0.0 0.0 0.0 0.0 26.8 >> 4 2.2 0.8 0.4 0.0 0.2 11.2 1.4 33.2 0.0 0.0 49.4 >> 5 0.2 1.8 0.0 1.0 0.0 0.2 0.0 12.2 0.0 19.2 34.6 >> 6 0.0 0.0 0.0 1.0 0.0 0.0 0.0 2.2 0.0 14.6 17.8 >> 7 0.0 0.0 0.0 0.0 3.6 0.2 0.0 2.0 0.0 0.2 6.0 >> 8 0.0 0.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 >> 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 >> 10 1.0 1.4 0.0 0.0 0.0 1.0 0.4 0.0 0.0 0.0 3.8 >> 11 0.0 8.2 0.0 0.0 0.0 0.0 8.4 0.0 0.0 0.4 17.0 >> 12 10.8 0.8 0.0 0.0 0.0 0.0 1.0 0.0 0.0 4.2 16.8 >> 13 32.8 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.2 0.2 34.0 >> 14 1.0 0.0 1.6 0.2 0.0 0.0 0.0 0.0 0.0 0.0 2.8 >> 15 0.0 0.0 0.0 2.2 1.4 0.0 0.0 0.0 0.0 0.0 3.6 >> 16 0.6 0.0 0.0 0.6 22.0 0.0 0.0 0.0 0.0 0.0 23.2 >> 17 0.0 0.0 0.0 0.0 0.0 0.0 2.8 0.0 0.0 0.0 2.8 >> 18 2.8 0.0 0.0 0.0 0.0 0.0 8.2 0.0 0.0 8.2 19.2 >> 19 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.2 0.4 >> 20 0.0 8.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.2 >> 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 >> 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.4 >> 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.0 0.0 1.2 >> 24 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 8.2 0.0 11.2 >> 25 3.2 0.0 0.0 0.6 0.6 0.0 0.0 0.0 11.8 0.0 16.2 >> 26 0.0 0.0 26.2 0.0 12.6 0.0 0.0 2.2 0.0 0.0 41.0 >> 27 0.2 0.0 10.6 0.0 1.2 0.0 0.0 1.8 0.0 0.0 13.8 >> 28 0.0 4.0 0.0 5.8 0.0 0.0 0.0 0.0 0.0 0.0 9.8 >> 29 0.2 12.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.6 >> 30 0.0 2.6 0.0 0.0 2.2 0.0 0.0 0.0 0.0 0.0 4.8 >> 31 0.0 0.0 0.6 0.0 0.8 0.0 0.0 0.0 4.8 0.0 6.2 >> Year Totals 62.8 40.2 51.2 29.8 70.0 12.8 30.8 57.2 55.2 47.6 457.6 >> >> >> ____________________________________________________________________________________ >> Be a better friend, newshound, and >> >> ______________________________________________ >> R-help at r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> >> > > > >-- Dr. Matthias Kohl www.stamats.de
You need to omit the last column, though: RowM <- rowMeans(x[, -ncol(x)]) for example. -----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Matthias Kohl Sent: Monday, 17 March 2008 4:14 PM To: Hesen Peng Cc: R help forum Subject: Re: [R] mean for each row or rowMeans ... Matthias Hesen Peng wrote:> How about rowSums(x)/ncol(x), where x is the matrix? > > > On Mon, Mar 17, 2008 at 1:48 PM, Roslina Zakaria <zroslina at yahoo.com>wrote:> >> Hi r-users, >> How do find the mean for each row? Thank you in advance for yourhelp.>> >> >> 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 DayTotals>> 1 0.0 0.0 0.0 0.0 0.6 0.0 8.4 0.0 29.4 0.038.4>> 2 0.0 0.0 1.8 0.0 22.4 0.0 0.2 0.4 0.8 0.025.6>> 3 7.8 0.0 0.0 17.6 1.4 0.0 0.0 0.0 0.0 0.026.8>> 4 2.2 0.8 0.4 0.0 0.2 11.2 1.4 33.2 0.0 0.049.4>> 5 0.2 1.8 0.0 1.0 0.0 0.2 0.0 12.2 0.0 19.234.6>> 6 0.0 0.0 0.0 1.0 0.0 0.0 0.0 2.2 0.0 14.617.8>> 7 0.0 0.0 0.0 0.0 3.6 0.2 0.0 2.0 0.0 0.26.0>> 8 0.0 0.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0.010.0>> 9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0>> 10 1.0 1.4 0.0 0.0 0.0 1.0 0.4 0.0 0.0 0.03.8>> 11 0.0 8.2 0.0 0.0 0.0 0.0 8.4 0.0 0.0 0.417.0>> 12 10.8 0.8 0.0 0.0 0.0 0.0 1.0 0.0 0.0 4.216.8>> 13 32.8 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.2 0.234.0>> 14 1.0 0.0 1.6 0.2 0.0 0.0 0.0 0.0 0.0 0.02.8>> 15 0.0 0.0 0.0 2.2 1.4 0.0 0.0 0.0 0.0 0.03.6>> 16 0.6 0.0 0.0 0.6 22.0 0.0 0.0 0.0 0.0 0.023.2>> 17 0.0 0.0 0.0 0.0 0.0 0.0 2.8 0.0 0.0 0.02.8>> 18 2.8 0.0 0.0 0.0 0.0 0.0 8.2 0.0 0.0 8.219.2>> 19 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.20.4>> 20 0.0 8.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.08.2>> 21 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0>> 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.40.4>> 23 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.0 0.01.2>> 24 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 8.2 0.011.2>> 25 3.2 0.0 0.0 0.6 0.6 0.0 0.0 0.0 11.8 0.016.2>> 26 0.0 0.0 26.2 0.0 12.6 0.0 0.0 2.2 0.0 0.041.0>> 27 0.2 0.0 10.6 0.0 1.2 0.0 0.0 1.8 0.0 0.013.8>> 28 0.0 4.0 0.0 5.8 0.0 0.0 0.0 0.0 0.0 0.09.8>> 29 0.2 12.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.012.6>> 30 0.0 2.6 0.0 0.0 2.2 0.0 0.0 0.0 0.0 0.04.8>> 31 0.0 0.0 0.6 0.0 0.8 0.0 0.0 0.0 4.8 0.06.2>> Year Totals 62.8 40.2 51.2 29.8 70.0 12.8 30.8 57.2 55.2 47.6457.6>> >> >>________________________________________________________________________ ____________>> Be a better friend, newshound, and >> >> ______________________________________________ >> R-help at r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html>> and provide commented, minimal, self-contained, reproducible code. >> >> > > > >-- Dr. Matthias Kohl www.stamats.de ______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.