Re: [R] removing missing values from a matrix

[Rolf Turner]

On 2/10/2009, at 12:05 PM, Bert Gunter wrote:

However, I would hazard the guess that doing this is a (possibly
disastrously) bad idea

        I heartily second that hazard!!!

                cheers,

                        Rolf Turner

Bert Gunter
Genentech Nonclinical Biostatistics



-----Original Message-----

From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- project.org] On

Behalf Of Carvalho, Benilton
Sent: Thursday, October 01, 2009 3:34 PM
To: Amit Kumar
Cc: r-help@r-project.org
Subject: Re: [R] removing missing values from a matrix

red[is.na(red)] <- 0

Sent from my iPhone

On Oct 1, 2009, at 7:22 PM, "Amit Kumar" <amitkumartiw...@gmail.com>
wrote:

Hi! All,

I am working with a large matrix of dimension 23689 x 162. Some of the

values of this matrix is missing (NA). And it looks something like
that:

dim(red)

 23689  162

red

       [,1]  [,2]  [,3]  [,4]  [,5]
[1,]    2     NA    4     9     6
[2,]    5     NA    6   NA     1
[3,]   NA    2     11   23    20
[4,]    2      1     21  NA    3
[5,]   NA    7     NA  52    NA

Here I want to convert NA to zero everywhere in the matrix. I do no

want to omit NA using na.omit(red). I want output something like that:

red

       [,1]  [,2]  [,3]  [,4]  [,5]
[1,]    2      0     4     9     6
[2,]    5      0     6     0     1
[3,]    0      2     11   23    20
[4,]    2      1     21    0     3
[5,]    0      7      0    52     0

Please, help thanks.
Amit

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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.