[R] removing missing values from a matrix

[Carvalho, Benilton]

I agree with you folks, my assumption is that the user knows what he's
doing.


Sent from my iPhone

On Oct 1, 2009, at 8:33 PM, "Rolf Turner" <r.turner at auckland.ac.nz>
wrote:

>
> 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
>>>
>>> ______________________________________________
>>> 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.
>>
>> ______________________________________________
>> 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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