[R] Extract from matrix
_Fede_
r_stat_solutions at hotmail.es
Sat Feb 16 17:28:27 CET 2008
Thank you all for your help.
Fede
_Fede_ wrote:
>
> Hi all.
>
> I have certain problem with the extraction of data from matrices. I know
> how extract elements from a matrix, but what I would like to do is to
> extract a concrete number, not an element. For example if I have this
> matrix X:
>
> [,1] [,2] [,3] [,4]
> [1,] 3 13 23 33
> [2,] 9 19 29 39
> [3,] 10 20 30 40
>
> I can do X[-2] or X[2] in order to eliminate the element of the matrix or
> to extract it, respectively.
>
> But, what I need is to extract or to eliminate a value of the matrix. For
> example the 29.
>
> Can I do this? How?
>
> Thanks for the help.
>
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