[ncl-talk] calculate moving(or running) percentile on times series

Sancta Vega sanctavega at gmail.com
Thu Apr 19 07:30:18 MDT 2018


Ok thanks
Your code calculate the running average (mean ) through a window of 18 days
by a loop I think?
Me I need the daily value corresponding to the 85th percentile using a
running window of 30 days for all years my result should be a (365 value
corresponding to each day value).

2018-04-19 14:41 GMT+02:00 Barry Lynn <barry.h.lynn at gmail.com>:

> To start, are you familiar with:
>
>   do j = 0,dims_o(0)-1
>
>    dfp_rave(j,:) = *run**ave*(dfp_o(j,:),18,0)
>
>   end do
>
>
>
> As to the 85th percentile, you need to figure out what it is, and then use
> the where statement.
>
> Please try and then write again (to the list) when you have questions.
>
> Barry
>
> On Thu, Apr 19, 2018 at 2:36 PM, Sancta Vega <sanctavega at gmail.com> wrote:
>
>> Hi,
>> I would like to get number of days over a daily threshold during (Jan-dec
>> 1800-1829 period).
>> The threshold is calculated using a moving(or running percentile 85th)
>> over this period.
>>
>> Could you please help me or give me an example of ncl script?
>>
>> Thanks
>>
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>>
>
>
> --
> Barry H. Lynn, Ph.D
> Senior Lecturer,
> The Institute of the Earth Science,
> The Hebrew University of Jerusalem,
> Givat Ram, Jerusalem 91904, Israel
> Tel: 972 547 231 170
> Fax: (972)-25662581
>
> C.E.O, Weather It Is, LTD
> Weather and Climate Focus
> http://weather-it-is.com
> Jerusalem, Israel
> Local: 02 930 9525
> Cell: 054 7 231 170
> Int-IS: x972 2 930 9525
> US 914 432 3108
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20180419/eed94b67/attachment.html>


More information about the ncl-talk mailing list