[R] Extracting selected rows from a matrix to a submatix

From: pankaj borah <pankajborah2k3_at_yahoo.co.in>
Date: Wed, 13 Apr 2011 21:43:26 +0530 (IST)

I have a matrix M

> dim(M)

[1] 30380   561

I have another list L contains , that contains some row names of matrix M str (L)
 chr [1:21037]

Now I want to extract the submatrix subM (21037    ,    561)  from the matrix M by matching the rownames (M) to the 21037 rownames o f L

How do I do that ?

Thanks and regards,

Pankaj Barah


Pankaj Barah Department of Biology
 Norwegian University of Science & Technology (NTNU)   Realfagbygget, N-7491 Trondheim, Norway T

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