[R] scoping issues?

[tom wright]

Thanks for the answers, yup the missing c() was what was throwing me.
And thanks Barry for the slighly more elegant code, I'm a bit post
christmas party here and not thinking as straight as I should be.



On Thu, 2005-08-12 at 06:47 -0500, tom wright wrote:
> Can anyone please help me understand whats happening here?
> Thanks
> Tom
> 
> getAmpRatio<-function(v_amps){
>     #calculates the amplitude ratios between the 3 largest amps and the
> rest
>     bigamp<-0
>     map<-rep(TRUE,length(v_amps))
> 
>     for(iLoc in 1:3){
>         bigamp<-bigamp+max(v_amps)
>         map[which.max(v_amps)]<-FALSE
>         v_amps<-v_amps[map]
>         map<-rep(TRUE,length(v_amps))
>     }
>     browser()
>     return(bigamp/mean(v_amps))
> }
> 
> amps<-c(1,2,3,3,3,2,1)
> getAmpRatio(amps)
> 
> Browse[1]> v_amps
> [1] 1 1 2 2 1
> Browse[1]> c(amps[1],amps[2],amps[3],amps[7],amps[8])
> [1] 1 1 2 2 1
> Browse[1]> mean(v_amps)
> [1] 1.4
> Browse[1]> mean(amps[1],amps[2],amps[3],amps[7],amps[8])
> [1] 1
> 
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