[R] periodicity validation

[stephen sefick]

all of the functions that I listed are time series tools for looking
at what I think you want.   this can be done you just have to
understand the methodology.  So, look at some of the things that I
suggested,  If these don't help then I don't understand what you want,
and it is necissary for you to help me figure out what it is that you
want.
good luck

2008/9/11 yk <shiyuankun.debian at gmail.com>:
> The data I mentioned above is oscilating vs time，but there are not
> obersevable fixed cycle if I just plot this data.
> How to get the average  cycle，or the most probable range of cycle with
> statistical methods?
> I don't know how to achieve it by R, is there any command?
>
> On Sep 11, 10:52 am, "stephen sefick" <ssef... at gmail.com> wrote:
>> ?spectrum
>> ?acf
>> ?ccf
>> library(wmtsa)
>> ?wavCWT
>> library(sowas)
>> ?wsp
>>
>> you could also look at lagged plots to look for periodicity.
>> if you elaborate on the problem and include executable sample code you
>> will probably recieve more help.
>>
>> On Wed, Sep 10, 2008 at 10:02 PM, yk <shiyuankun.deb... at gmail.com> wrote:
>> > There is a series of data contains time in fixed step and energy
>> > varying with time, how to test its periodicity?In R, it seems there is
>> > no direct tools since I have search the R manual with periodic and I
>> > have not found any related topic.
>> > Thanks a lot
>>
>> > ______________________________________________
>> > R-h... at r-project.org mailing list
>> >https://stat.ethz.ch/mailman/listinfo/r-help
>> > PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
>> > and provide commented, minimal, self-contained, reproducible code.
>>
>> --
>> Stephen Sefick
>> Research Scientist
>> Southeastern Natural Sciences Academy
>>
>> Let's not spend our time and resources thinking about things that are
>> so little or so large that all they really do for us is puff us up and
>> make us feel like gods. We are mammals, and have not exhausted the
>> annoying little problems of being mammals.
>>
>>         -K. Mullis
>>
>> ______________________________________________
>> R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> 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.
>



-- 
Stephen Sefick
Research Scientist
Southeastern Natural Sciences Academy

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods. We are mammals, and have not exhausted the
annoying little problems of being mammals.

	-K. Mullis