[ncl-talk] Need help in Do looping

[Toni Klemm]

Hi Trisanu,

What you’re doing right now is replacing the value in temp_file with each loop, which is why your average at the end is equal to that of the last iteration.

Change this line in your if-loop from this

     temp_file = spd(i,j,k)

to this

     temp_file(i,j,k) = spd(i,j,k)

and before your first do loop create a new variable “temp_file” as an three-dimensional array (temp_file = new((/dimsizes(…),dimsizes(…),dimsizes(…)/),float,) with the dimensions of time and loc.

Good luck,
Toni


Toni Klemm, Ph.D.
Postdoctoral Research Associate
Department of Ecosystem Science and Management
College of Agriculture and Life Sciences
Texas A&M University, College Station, TX
www.toni-klemm.de <http://www.toni-klemm.de/> | @toniklemm <http://www.twitter.com/toniklemm>
Editorial Board member, Early Career Climate Forum <http://www.eccforum.org/>








> On Sep 24, 2019, at 9:52 AM, Trisanu Banik via ncl-talk <ncl-talk at ucar.edu> wrote:
> 
> Dear All
> 
> I need one help related to Do loop in NCL. 
> 
> I have attached a code, the target of the code is to take data for few lat, long points represented by Do loops of j and k. Collected data values for the desired lat long need to put in the variable temp_file. Therefore, what I expect temp_file should be populated with all the data values(from spd variable) corresponding to the lat long in 'loc' variable. Here the loop of j and k completes when j and k run from loc(1,0) to loc(1,1) and loc(0,0) to loc(0,1). Once the data has been collected in temp_file, next target is to take average of all the data and put it in the variable final_spd. Here average value is put in the variable temp_avg. The same iteration needs to do for 48 different times. 
> 
> Here what I noticed the loop of j and k each time filled the temp_file with a single value upto its dimension 30 and each iteration of j and k did the same task. Therefore, instead of taking average over various data value corresponding to different lat long it takes average on a single value that arises during the last iteration and put it in the final_spd variable. 
> 
> What I want is to take all the data corresponds to the j and k loop corresponding to a particular time (represented by i loop) and take the average over those data and put it in the final_spd variable and need to do the same task for next 47 hours and put the average in final_spd variable. So what I expect the final_spd variable should have 1 column and 48 different row. 
> 
> Please suggest me how to do the same. 
> 
> 
> Thanks & Regards
> Trisanu
> 
> Trisanu Banik,PhD
> Research Scientist
> North Eastern Space Applications Centre (NESAC)
> Government of India
> Department of Space
> Umiam-793103, Meghalaya
> Mobile-9774837581
> 
> <ncl code.txt>_______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:
> https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.ucar.edu_mailman_listinfo_ncl-2Dtalk&d=DwICAg&c=u6LDEWzohnDQ01ySGnxMzg&r=zmhRVp0i4wZ5_1Ujh0fnRXAExHgKLTQu0rZLW7PxKA4&m=KcQ3IFUyt22n95ZzVhfXm_CPUrgeT4hH8CQtpL3PR8g&s=xNeSEQbuEzzbPi9PeZMhSLHPcAUX3iHSeX1mr-J9Swk&e=

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20190924/73a4b906/attachment.html>