Re: [R] how to omit NA without using ifelse

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,

Re: [R] how to omit NA without using ifelse

?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 delete

Re: [R] how to omit NA without using ifelse

Hi: what you want to do is not recommended if you're doing a statistical computation ( many threads on this. search the archives if you want more details ) but if you really want to do that below should work: mat[is.na(mat)]<-0 On Thu, Mar 5, 2009 at 11:22 PM, Manli Yan wrote: I have a 50

[R] how to omit NA without using ifelse

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]] __