[R] removing missing values from a matrix

[Amit Kumar]

Thanks!
It worked! There is another problem I want to subset the matrix 'red'
in following manner:
>dim(red)
  23688  164
>a=red[1:23688,1:4]
>b=red[1:23688,5:8]
>c=red[1:23688,9:12]
..............................
..............................
>z=red[1:23688,161:164]
If there any efficient way to do it?
cheers!
Amit

>
> On Thu, 1 Oct 2009, Amit Kumar 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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>