Thanks guys,
I did not know the fun cumsum
I will work on that.
HVZ
2011/8/22 David Winsemius <dwinsem...@comcast.net>
>
> 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
>
>
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