# [R] Upper bands and lower bands

Jim Lemon drjimlemon at gmail.com
Fri Jun 2 13:46:37 CEST 2017

```Hi Pedro,
If I get the idea, you want a vector of length 7300 starting at 1 and
ending at 0.

seq(1,0,length.out=7300)

Produces such a vector. It seems to me that:

seq(1.1,0.05,length.out=7300)

produces the upper vector and:

seq(0.95,-0.05 length.out=7300)

the lower. Then again, I might have the wrong idea big time.

Jim

On Fri, Jun 2, 2017 at 6:20 AM, Pedro páramo <percentil101 at gmail.com> wrote:
> I explain better:
>
> I have this percentage z<-1/(n*365) where n=20 so z is
> 0,000136986
>
> Imagine: a matrix with length(n*365) so that
>
> matrix result is
>
> resultc(
> 1,
> 1-z
> result previous row-z
> result previous row-z
> ....
> 0)
>
> If I plot this is a linear decreasing line
>
> I want to plot an upper line wich is 10% higher tan resultc on the first
> values and then decreasing so that last value will be 0.05.
>  the same in the lower, a line which values are at the beggining a 10%
> lower and smoothly dreasing values till the last will be 5% lower.
>
> Is it posible to make thins bands exponencially with a code?
>
>
>
>
>
> 2017-06-01 20:20 GMT+02:00 Pedro páramo <percentil101 at gmail.com>:
>
>> Hi all
>>
>> I want to add a band of fluctuación (exponential decreading) to a linear
>> deacrecing values
>>
>> Imagine: I have a matrix like c(10,9,8,7,6,5,4,3,2,1)
>>
>> The thing is I want  two new lines so that the máximum value of the new
>> colum on the máximum is from 10% to 5% higher and the same lower for the
>> mínimum
>>
>> the final two matix will be something like
>>
>> c(10+0.10*10,9+0.089*9,8+0.075*8.....,1+0.05*1)
>> c(10-0.10*10,9-0.09*9,8-0.075*8.....,1-0.05*1)
>>
>> What I´m looking for is a function tu calculate de "values, weights" so
>> that including the 10% and 5% and the nunmber of decreasing values, in this
>> case n=10, calculates de smotth weigths.
>>
>> I don´t know if I have expalined well so thar finally putting initial
>> value final and periods I can find a matrix like
>>
>> g(0.1,0.89,0.79,0.075,...,0.05)
>>
>> Exists something like that?
>>
>>
>
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>
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