[R] output values from within a function

[Greg Snow]

Put the line:

cat(z1,'\n')

in your function.  You may also want to put the flush.console() command right after that.

Hope this helps,

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Maas James Dr (MED)
> Sent: Friday, August 20, 2010 7:41 AM
> To: r-help at r-project.org
> Subject: [R] output values from within a function
> 
> Is it possible to get R to output the value of an expression, that is
> being calculated within a function?  I've attached a very simple
> example but for more complicated ones would like to be able to debug by
> seeing what the value of specific expressions are each time it cycles
> through a loop that executes the expression.  I'm relatively new to
> this so there may be much simpler more elegant ways to do it.
> 
> For example, is there a command I can put within the function "funct01"
> that will output the value of z1 to the screen?
> 
> Thanks
> 
> Jim
> 
> ==================================
> ## Practice file to try out evaluations
> 
> y <- 5
> 
> (x <- y^2)
> 
> funct01 <- function (x,y) {
> 
>     z1 <- x + y
>     z2 <- x * y
>     z3 <- x^y
> 
>     results <- data.frame (z1=z1, z2=z2, z3=z3)
>     return(results)
> 
> }
> 
> funct01(7,9)
> 
> 
> ===============================
> Dr. Jim Maas
> University of East Anglia
> Norwich, UK
> NR4 7TJ
> 
> 	[[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.