Re: [R] mean for each row

From: Matthias Kohl <Matthias.Kohl_at_stamats.de>
Date: Mon, 17 Mar 2008 07:14:27 +0100

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
>>
>>
>> ____________________________________________________________________________________
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>>
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>>
>
>
>
>

-- 
Dr. Matthias Kohl
www.stamats.de

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Received on Mon 17 Mar 2008 - 06:17:15 GMT

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