[R] recover log of matrix

[arun]

Hi,
 mat1<- matrix(log(1:20),ncol=5)
 exp(mat1)
#     [,1] [,2] [,3] [,4] [,5]
#[1,]    1    5    9   13   17
#[2,]    2    6   10   14   18
#[3,]    3    7   11   15   19
#[4,]    4    8   12   16   20
mat2<- matrix(log2(1:20),ncol=5)
 2^mat2
#     [,1] [,2] [,3] [,4] [,5]
#[1,]    1    5    9   13   17
#[2,]    2    6   10   14   18
#[3,]    3    7   11   15   19
#[4,]    4    8   12   16   20
A.K.



----- Original Message -----
From: JiangZhengyu <zhyjiang2006 at hotmail.com>
To: "r-help at r-project.org" <r-help at r-project.org>
Cc: 
Sent: Monday, May 13, 2013 2:41 PM
Subject: [R] recover log of matrix

Dear all, I have a matrix with all values being log transformed.  I want them back to the values before the transformation.  i.e. 2^matrix M. Is there any easy code to do this? Thanks,Zhengyu                           
    [[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.