[R] Writing R-scripts

[ilai]

It seems all you are doing in the if statements is defining functions.
You need to actually "apply" them to some arguments, then you can pass
results.
i.e.
f<- function(x,type,...){
a<- function(...){   2* x }
b<- function(...) {  x^2 }
if(type==1){ ret<- a(x) }
if(type==2){ ret<- b(x) }
ret
}

You may also want to see ?switch or ?local

Cheers

On Mon, Feb 13, 2012 at 2:59 PM, Cem Girit <girit at comcast.net> wrote:
> Hello,
>
>        This is my first attempt to write a script in R. The program below
> is intended to do some parametric tests on group data. There are subroutines
> for each type of test. The call to the "parametric.tests", routine sets the
> argument "testtype" for the test to be used. How can I transfer the
> calculated values (in "result" below) in each routine to the calling
> parametric.tests routine?
>
> Cem
>
> ----------------
>
>
> ## testtype : 1: Duncan
> ##                     2: Dunnett
> ## resp:  response variable, must be numeric and vector
> ## group: group id for resp, numeric or character
> ## alpha: CL 0.05 or 0.01
> ## vehicle: Control group name for Dunnett
>
> parametric.tests<-function(testtype, resp, group, vehicle, alpha)
> {
> if (testtype==1){
>
> ## resp:  response variable, must be numeric and vector
> ## group: group id for resp, numeric or character
> ## alpha: CL 0.05 or 0.01
>
>  duncan.test <- function (resp, group, alpha) {
>
> .........
>
> result <- data.frame(label=label, estimate=Estimate, alpha=alpha,
> lower=Lower, upper=Upper, p.value=pval, significance=sig)
> return(result)
> }
> }
>
> else if (testtype==2){
>
>
> dunnett.test <- function(resp, group, vehicle, alpha)
> {
>
> .....
>
>  result <- data.frame(label=label, estimate=Estimate, alpha=alpha,
> lower=Lower, upper=Upper, p.value=pval, significance=sig)
>  return(result)
> }

> }

> }
>
> Cem
>
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