[R] Sequence

Petr PIKAL petr.pikal at precheza.cz
Tue Aug 23 09:01:23 CEST 2011


Hi

as far as I understand your question it seems to me that

round(5*(1.4^(0:10)))

gives you your sequence

and 

cumsum(round(5*(1.4^(0:10))))

gives you summary sequence.

Regards
Petr

> 
> I definitely used too much lines s of code because I still don't know 
how to
> do some staff.
> but it works:
> seq=5         #starting value
> var=5        # starting value
> long= 1:10   # length of the vector
> for (x in long){
>         var=var+((var/100)*40)
>     seq=append(seq,var)
> }
> seq=round(seq)
> seq=cumsum(seq)
> 
> > seq
>  [1]    5   17   39   75  130  212  332  505  752 1102 1597
> 
> 
> Probably I could set just a variable instead of 2 ( var and seq)
> and set the value of long directly to 10, but as I said I just started 
using
> R
> 
> 
> Thanks :)
> 
> ?cumsum
> > cumsum(yoursequence)
> >
> > HTH,
> > Jorge
> >
> >
> > On Mon, Aug 22, 2011 at 8:36 PM, Claudio Zanettini <> wrote:
> >
> >> Hello everyone,
> >> I would like to generate a sequence
> >> such as, starting from 5, every value  is
> >>  40% of the value before+ all the preceeding values.
> >> es:
> >> this is the seq of all the value+40% of the preceding value:
> >> 5         7        10        14        19        27        38
> >> 53        74       103       145       202       283       397
> >> 556       778      1089      1525      2134      2988      4183
> >>
> >> then the vector tha I need is
> >>  5 , 5+7, 5+7+10, 5+7+10+14 and so on
> >>
> >> I can generate the first sequence but I don t know how to generate 
the
> >> last.
> >>
> >> I would really appreciate your help.
> >> Thanks
> >> HVZ
> >>
> >>        [[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.
> >>
> >
> >
> 
>    [[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.



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