[R] A matrix problem

[Bogaso]

Hi all,

I have following ch. matrix :

> mat
     [,1]                [,2]                  [,3]                [,4]                 
[1,] "NA"                "0.0671746073115122"  "1.15281464953731" 
"0.822277316923348"  
[2,] "0.113184828073156" "-0.0133150789005112" "0.640912657072027"
"-0.0667317787225847"
[3,] "-1.40593584523871" "1.10755549414758"    "0.493828059815449"
"-1.09233516877992"  
[4,] "0.577643850085066" "1.10279525071026"    "1.16725625310315" 
"0.367724768195794"  
[5,] "0.746100264271392" "-0.335556133578362"  "NA"               
"0.328559028366446"  

Now I want to convert it to a numeric matrix. So I used following code :

> as.numeric(mat)
 [1]          NA  0.11318483 -1.40593585  0.57764385  0.74610026  0.06717461
-0.01331508  1.10755549  1.10279525 -0.33555613
[11]  1.15281465  0.64091266  0.49382806  1.16725625          NA  0.82227732
-0.06673178 -1.09233517  0.36772477  0.32855903
Warning message:
NAs introduced by coercion 

What I noticed is that :
1. Original matrix converted to vector
2. A waring message is there.

I do not want such things to happen. Is there any direct way to convert my
original ch. matrix to a numeric matrix ?
Thanks
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