R help - Sep 2010 - How to combine matrix and vector

Dear fellows,

I am a novice in R. I would like to combine a matrix and a vector. Assume
that we have the matrix a and the vector b with same length of column.

a<-matrix(seq(1:10),nrow=2,ncol=5,byrow=TRUE)
a1    2    3    4    5
6    7    8    9   10

b<-t(c(11,12,13,14,15))
b11   12   13   14   15

Then, I want to combine a and b as follows.

c1    2    3    4    5
6    7    8    9   10
11  12  13  14  15

If you teach me to easily combine the matrix and the vector, I will greatly
appreciate you. Thank  you.

Regards,
Wonsang


-----
--
Wonsang You
Special Lab Non-Invasive Brain Imaging
Leibniz Institute for Neurobiology
http://www.ifn-magdeburg.de
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Hi!

Take a look at rbind()
Btw, I don't think you have to transpose b.

HTH,
Ivan

Le 9/16/2010 11:09, Wonsang You a écrit :
> Dear fellows,
>
> I am a novice in R. I would like to combine a matrix and a vector. Assume
> that we have the matrix a and the vector b with same length of column.
>
> a<-matrix(seq(1:10),nrow=2,ncol=5,byrow=TRUE)
> a> 1    2    3    4    5
> 6    7    8    9   10
>
> b<-t(c(11,12,13,14,15))
> b> 11   12   13   14   15
>
> Then, I want to combine a and b as follows.
>
> c> 1    2    3    4    5
> 6    7    8    9   10
> 11  12  13  14  15
>
> If you teach me to easily combine the matrix and the vector, I will greatly
> appreciate you. Thank  you.
>
> Regards,
> Wonsang
>
>
> -----
> --
> Wonsang You
> Special Lab Non-Invasive Brain Imaging
> Leibniz Institute for Neurobiology
> http://www.ifn-magdeburg.de
-- 
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calandra@uni-hamburg.de

**********
http://www.for771.uni-bonn.de
http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php


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Thank you so much for your help. It was successful to combine matrix and
vector by using "rbind" as follows.
> a<-matrix(seq(1:10),nrow=2,ncol=5,byrow=TRUE)
> a
     [,1] [,2] [,3] [,4] [,5]
[1,]    1    2    3    4    5
[2,]    6    7    8    9   10
> b<-t(c(11,12,13,14,15))
> b
     [,1] [,2] [,3] [,4] [,5]
[1,]   11   12   13   14   15
> rbind(a,b)
     [,1] [,2] [,3] [,4] [,5]
[1,]    1    2    3    4    5
[2,]    6    7    8    9   10
[3,]   11   12   13   14   15




-----
--
Wonsang You
Special Lab Non-Invasive Brain Imaging
Leibniz Institute for Neurobiology
http://www.ifn-magdeburg.de
-- 
View this message in context:
http://r.789695.n4.nabble.com/How-to-combine-matrix-and-vector-tp2541797p2542362.html
Sent from the R help mailing list archive at Nabble.com.