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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