[R] vectorizing a function

Steve Jaffe sjaffe at riskspan.com
Tue Jul 7 21:42:26 CEST 2009


I'm sure I'm missing something obvious but I'm not seeing how to simply
"vectorize" a function of two or more variables.

Say I have
f <- function(x,y) if (x>0) y else -y

Now I have vectors x and y of equal length and I'd like to apply f
element-wise. I.e. conceptually
 z <- f(x,y) where x, y, z are vectors of the same length

Some magic involving apply? 

Thanks
-- 
View this message in context: http://www.nabble.com/vectorizing-a-function-tp24380064p24380064.html
Sent from the R help mailing list archive at Nabble.com.




More information about the R-help mailing list