[R] How to generating diagnal blocks ?

[Robin Hankin]

Hello

You need adiag(), which
is now part of the magic package:


 > library(magic)
 > adiag(matrix(1:6,2,3),matrix(1:9,3,3))
      [,1] [,2] [,3] [,4] [,5] [,6]
[1,]    1    3    5    0    0    0
[2,]    2    4    6    0    0    0
[3,]    0    0    0    1    4    7
[4,]    0    0    0    2    5    8
[5,]    0    0    0    3    6    9
 >


the function also has extra functionality over the one Vito
points to in the archives.

HTH

rksh


On 21 Sep 2006, at 08:14, vito muggeo wrote:

> If I remember well, there should be a package including the function
> bdiag() making the job..but I am not able to remember its name..
>
> However a quick search via RSiteSearch("bdiag") yields
>
> http://finzi.psych.upenn.edu/R/Rhelp02a/archive/40393.html
>
> Hope this helps you,
>
> vito
>
>
> Tong Wang wrote:
>> Hi,
>>      I am trying to creat a matrix with diagnal blocks, say, I  
>> have a matrix X of any dimension (nxm) ,and would like to have:
>>
>>                                                             X
>>                                                                 X
>>                                                                     X
>>                                                                       
>>  .....
>> otherwise space filled with 0's.   Is there a handy way to do this ?
>>
>> Thanks a lot in advance.
>>
>> best
>>
>> ______________________________________________
>> 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
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
>
> -- 
> ====================================
> Vito M.R. Muggeo
> Dip.to Sc Statist e Matem `Vianelli'
> Università di Palermo
> viale delle Scienze, edificio 13
> 90128 Palermo - ITALY
> tel: 091 6626240
> fax: 091 485726/485612
>
> ______________________________________________
> 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
> and provide commented, minimal, self-contained, reproducible code.

--
Robin Hankin
Uncertainty Analyst
National Oceanography Centre, Southampton
European Way, Southampton SO14 3ZH, UK
  tel  023-8059-7743