From: Syed Abid Hussaini <ohitsabid_at_yahoo.com>

Date: Mon, 24 Dec 2007 10:08:39 -0800 (PST)

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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. Received on Mon 24 Dec 2007 - 18:10:56 GMT

Date: Mon, 24 Dec 2007 10:08:39 -0800 (PST)

Thanks Gabor!

I never realized there could be a "diff" function. all i was trying to do was to calculate the
iterated differences in a vector. I feel so embarassed, but so happy for using R.
by the way, i used

"wave2 <- sort (wave2, decreasing=F)" to sort the values non-decreasingly because the code "i <-
findInterval((wave2[1]), wave2)" doesnt work without this sorting.
But all that is past now since i found the diff function.

Thanks again.

abid

> > From: "Gabor Grothendieck" <ggrothendieck@gmail.com>

*> CC: R-help_at_stat.math.ethz.ch
**> To: "Syed Abid Hussaini" <ohitsabid_at_yahoo.com>
**> Date: Mon, 24 Dec 2007 02:30:57 -0500
**> Subject: Re: [R] saving while loop values to one vector
**>
**> Its not clear what your code is intended to do but
**>
**> - put set.seed(123) before your code so you can
**> run it reproducibly.
**>
**> - wave2 <- sort(abs(rnorm(100))) is the same as your first
**> two lines
**>
**> - your findInterval line always returns 1 so its probably not what you want
**>
**> - i in i:x is confusing. Use j in i:x or even better use diff(wave2).
**>
**> On Dec 24, 2007 1:54 AM, Syed Abid Hussaini <ohitsabid_at_yahoo.com> wrote:
**> > I solved it myself by reading the help files which i should have done prior to my posting.
**> >
**> > Solution:
**> >
**> > wave2 <- abs(Re(rnorm(100)))
**> > wave2 <- sort (wave2, decreasing=F)
**> > hist(wave2)
**> > x <- length (wave2)
**> > i <- findInterval((wave2[1]), wave2)
**> > i <- i+1
**> > out <- numeric(x)
**> > for (i in i:x) {
**> > out[i] <- (wave2 [i] - wave2[i-1])
**> > }
**> > out
**> >
**> > As you see i trimmed the code and alloted a new variable called out which i later save my
**> values
**> > to.
**> >
**> >
**> >
**> > --- Syed Abid Hussaini <ohitsabid_at_yahoo.com> wrote:
**> >
**> > > Hi all,
**> > > I am pretty new to R and even new to programming in general. Right now i get only one
**> value
**> > > for
**> > > j below (print(j)), how do i save all j values to one vector or matrix? Sorry for this very
**> > > basic
**> > > question. thanks in advance.
**> > >
**> > > wave2 <- abs(Re(rnorm(100)))
**> > > i <- findInterval((wave2[1]), wave2)
**> > > i <- i+1
**> > >
**> > > while (i < length(wave2)) {
**> > > j <- (wave2 [i] - wave2[i-1])
**> > > print(j)
**> > > i<-i+1
**> > > }
**> > >
**> > > abid
**> > >
**> > >
**> > >
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