[R] how to omit NA without using ifelse

[LordByron]

Hi Manli. Try the replace() function as below:
replace(a,is.na(a),0) #where a is the name of your 50 x 50 matrix

Below is an example:


a<-matrix(c(sqrt(-2:3)), nrow=2) # produces a 2 x 3 matrix some of whose
elements are NaN (or NA) 
# due to square root operator on negative integers

replace(a, is.na(a), 0) 

       [,1]  [,2]      [,3]
[1,]    0    0    1.414214
[2,]    0    1    1.732051

############################


bartjoosen wrote:
> 
> ?is.na
> 
> 
> 
> Manli Yan wrote:
>> 
>>    I have a 50*50 matrix,some entry are NAs,I want to replace these NA by
>> 0,so can I use some syntax to do so other than using ifelse?
>>    I tried to use replace(a,NA,0),it didnt work~~(a is matrix name)
>> 
>>   Thanks~
>> 
>> 	[[alternative HTML version deleted]]
>> 
>> ______________________________________________
>> 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.
>> 
>> 
> 
> 

-- 
View this message in context: http://www.nabble.com/how-to-omit-NA-without-using-ifelse-tp22365996p22387672.html
Sent from the R help mailing list archive at Nabble.com.