[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-bounces at r-project.org [mailto:r-help-bounces at r- 
> project.org] On
> Behalf Of Carvalho, Benilton
> Sent: Thursday, October 01, 2009 3:34 PM
> To: Amit Kumar
> Cc: r-help at 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" <amitkumartiwary at 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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>> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> 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.
>
> ______________________________________________
> 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.


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