R help - Aug 2011 - Sequence

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]]

?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]]
>
> ______________________________________________
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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.
>
	[[alternative HTML version deleted]]

On 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
If you have the first vector, then the second vector is just:

cumsum(vec)

(I am not sure this actually implements the problem statement. I would  
have imagined the third item to be 12+0.4*7 from the written  
description and for it to increase more rapidly.)
>
> I can generate the first sequence but I don t know how to generate  
> the last.
You should offer code when you have a partial solution.

-- 

David Winsemius, MD
West Hartford, CT