Many thanks David :-)
I think I got that idea :-)

On Sat, Jan 31, 2009 at 2:16 PM, David Winsemius <dwinsemius@comcast.net>wrote:

> Several ways, two are shown:
> > matrix(1:(4*7), 4,7)
>     [,1] [,2] [,3] [,4] [,5] [,6] [,7]
> [1,]    1    5    9   13   17   21   25
> [2,]    2    6   10   14   18   22   26
> [3,]    3    7   11   15   19   23   27
> [4,]    4    8   12   16   20   24   28
> > mtx <- matrix(1:(4*7), 4,7)
>
> > mtx[-1,]
>     [,1] [,2] [,3] [,4] [,5] [,6] [,7]
> [1,]    2    6   10   14   18   22   26
> [2,]    3    7   11   15   19   23   27
> [3,]    4    8   12   16   20   24   28
> > mtx[2:4, ]
>     [,1] [,2] [,3] [,4] [,5] [,6] [,7]
> [1,]    2    6   10   14   18   22   26
> [2,]    3    7   11   15   19   23   27
> [3,]    4    8   12   16   20   24   28
>
> Search terms:
> --- at the R prompt
> ?Extract
> ?"["      #gets to the same page
>
> --- in other sites:
> indexing
>
> -- David Winsemius
>
>
> On Jan 31, 2009, at 8:25 AM, Rofizah Mohammad wrote:
>
>   Hello,
>>
>> How do I get sub-matrix? Example, I would like to get matrix of size 3x7
>> from the matrix of size 4x7. Meaning that I try to exclude one row of the
>> original matrix.
>>
>> Thanks
>> -rofizah-
>>
>>        [[alternative HTML version deleted]]
>>
>> ______________________________________________
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>

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