Hi Jean,
I am going through vector x, if it is less than 200, fill it into samples.

I am having trouble with indexing x.

For example,
samples <-rep(NA, 10)

at i=2
x[2], 225<200 is not true; and samples[2] remains NA.

The loop continues to i=3, leaving x[2]=NA.  I don't want that to happen, I
want to fill up x[2] with value, in our case it's 111.

Mike


On Thu, Nov 29, 2012 at 5:39 PM, Jean V Adams <jvadams@usgs.gov> wrote:

> Mike,
>
> Based on this example, what do you want
>         samples
> to look like?
>
> It's not clear to me what you're trying to do with
>         i-1
>
> Jean
>
>
>
> C W <tmrsg11@gmail.com> wrote on 11/29/2012 03:55:12 PM:
>
> >
> > 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
>

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