Message-ID: <c1a3f4e9-ba19-4f52-a230-5d5765d670e2@email.android.com>
Date: 2012-11-29T22:56:18Z
From: Jeff Newmiller
Subject: How to subtract the counter i in for loop?
In-Reply-To: <CAE2FW2k6_t+jjwmKRmRBD-+YVLJQTeAOgtbURVr8sNArJ_1BiQ@mail.gmail.com>
Use a while loop instead of a for loop. I don't think what you have coded makes any sense, but fighting the for loop over control of the indexing variable is a recipe for failure.
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<jdnewmil at dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
---------------------------------------------------------------------------
Sent from my phone. Please excuse my brevity.
C W <tmrsg11 at gmail.com> wrote:
>Hi list,
>I am writing a for loop that looks like this:
>samples<-rep(NA,10)
>x <- rep(c(111, 225), 5)
>for(i in 1:10){
> If(x[i]<200){
> samples[i] <- x[i]
> }else{
> i=i-1
> }
>}
>
>The problem is that the returning vector still contains NA, I think
>the i
>in "else" is not getting subtracted. How should I get it to work?
>
>Thanks,
>Mike
>
> [[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.