R help - Jan 2008 - Retrieve only part of a matrix

Hi All,

I'm new with R; this is a basic question. I was given a matrix I of (nrow,
ncol), I would like to create another matrix A with some data in the matrix
I, say [1,4] (row 1, column 4) to [271,19000] (row 271, column 19000).  How
do I do this?  Please help.  Thank you very much.

 

--mc

 

 

 

 

 


	[[alternative HTML version deleted]]

Try this:

A <- I[1:271, 4:19000]


On 13/01/2008, My Coyne <mcoyne at boninc.com>
wrote:
> Hi All,
>
> I'm new with R; this is a basic question. I was given a matrix I of
(nrow,
> ncol), I would like to create another matrix A with some data in the matrix
> I, say [1,4] (row 1, column 4) to [271,19000] (row 271, column 19000).  How
> do I do this?  Please help.  Thank you very much.
>
>
>
> --mc
>
>
>
>
>
>
>
>
>
>
>
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
>

-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O

mymatrix <- oldmatrix[1:271,4:19000]

--- My Coyne <mcoyne at boninc.com> wrote:
> Hi All,
> 
> I'm new with R; this is a basic question. I was
> given a matrix I of (nrow,
> ncol), I would like to create another matrix A with
> some data in the matrix
> I, say [1,4] (row 1, column 4) to [271,19000] (row
> 271, column 19000).  How
> do I do this?  Please help.  Thank you very much.
> 
>  
> 
> --mc
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> 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.
>