R help - Aug 2010 - Apply function to two variables

Dear all,

I would like to apply a function to two vectors 

For example,

A<-c(NA,1,2,3,NA)
B<-6:10

I would like C to be equal to A but if any A element is NA that
corresponding c element is equal to B, i.e.

C = c(6,1,2,3,10)

Please note that this is a simplified example and the real vectors are
large so I would like to avoid loop as much as possible. Thank you 


Best Regards,

Suphajak Ngamlak
Equity and Derivatives Trading
Phatra Securities Public Company Limited
Tel: +662-305-9179   
Email: suphajak@phatrasecurities.com



	[[alternative HTML version deleted]]

> I would like to apply a function to two vectors 
> 
> For example,
> 
> A<-c(NA,1,2,3,NA)
> B<-6:10
> 
> I would like C to be equal to A but if any A element is NA that
> corresponding c element is equal to B, i.e.
> 
> C = c(6,1,2,3,10)
#untested...
C <- ifelse(is.na(A), B, A)